Radon is one of the noble gases in the periodic table. It is the heaviest, naturally occurring one among them. Due to its size, it is the most likely to establish compounds with other elements, compared to the other noble gases. However, its radioactivity easily breaks the bonds that are established between Radon and other elements. Thus, Radon has very few known compounds.

Radon forms in the radioactive decay chain of Uranium, which then forms Thorium, then Radium, and finally Radon. Radon condenses to form a solid that glows with yellow light due to its radioactivity. The half-life of Radon changes depending on the isotope at hand, but the longest half-life detected is around 92 hours.

Radon naturally occurs underground, and does not dissolve much in water or other liquids there. When it leaks above surface in the form of gas, it tends to accumulate in the not-well-ventilated parts of the houses, e.g. basements. Exposure to Radon gas is linked with cancer, and so it is considered as a health hazard. On the other side, the hot springs that contain trace amounts of Radon gas are used rarely to cure heart disease.

The following is an allegorical story in the form of a letter about how Radon develops in nature.

I am the only survivor from a quadruplet. One of my sisters survived only 108 minutes after birth. The death of the second one followed about half hour later. I spent my childhood with my only remaining sister. Our mother was not there either, because she had died while giving birth to us.

As we were growing into our adolescence, we shared many secrets with my sister, be them adventurous or romantic. She was a sister, a close friend, and sometimes a mom. When she died in her flourishing age, I not only lost my third sister but also lost a mom for the second time.

Since then, without bothering myself whether they are friend or foe, I let people approach me. I show affinity to them so much so that I am considered as the most sociable noble. When they start enjoying the beauties displayed on me, I am stressed by my need of privacy and security. And, I easily push everyone away by intimidating them with the very beauties they were attracted to.

So, life has been a bottomless solitude for me… Yes, being alone is part of being noble, and I need my privacy in my ivory tower. But I’d rather not have impenetrable walls between me and people.

What a discrepancy! I have a habit of intimidating people to push them away, but I am complaining from an endless solitude at the same time… Why am I like this? It feels as if there is an unknown person in me, over which I have no control, who is doing things using my body. Should I cry for help: I am stolen!

I thought about this a lot. Was it a psychological inheritance I received from the family? You know that my mother died when giving birth to me and that my sisters followed her. My grandmother also died when giving birth to my mother, and my grand-grandmother died when giving birth to my grandmother. I don’t know if it is this strangeness that makes me instinctively seek solitude, so much so that my husband could not stand me. I told him that our relationship could only survive in the polar cold places, and he said he can stay cold but not in a place where there is no one else. Eventually, our marriage ended, after which I realized that I was pregnant.

But life goes on, you know, whether you are a noble who pathetically seeks solitude, or if your mother died when giving birth to you, or if you are a pregnant mom left to herself… “The great gears of life turn with irresistible momentum. You either keep pace with it, or get smashed in it.” That’s what my mother said in her letter to me. And that letter is all I have of her. Though, however much I would like her to be with me, and share my joys of success and sorrows of failure. Maybe she would reveal precious life lessons to me, or whisper her secrets into my ear. Maybe she would reprimand me sometimes… Not a single moment lived with her, not even a smack… I wished that this not be the lot of my baby, but how?

I thought of Prophet Abraham’s wife, Hagar. Alarmed by her baby’s cries, she had rushed between two distant hills in search of finding some people to come for help. God had replied to her efforts by creating a spring in the middle of the desert, just near her, and guiding travelers there.

Following Hagar’s example, I tried taking refuge near people so that my baby would not be in a lonely world. In order not to disturb them, I chose their least used places. But people cast me out of there, lest I contract some illness. I tried fancy yellow dresses to make myself look friendly. But, instead of becoming friends, they put me in glass chambers. I tried to help people with some of their diseases, but except a few, they shunned me since I was too risky to be adopted into medical practice.

Oh my God, despite all my efforts, my baby was going to come into a solitary world like her mom’s. I knew I was going to be alone when giving birth, and so was my baby. There was a sour smile on my face every time I thought of her…

But maybe… Maybe one day, God would guide travelers here, and she could join them, and prosper wherever she ends up with. Maybe she would have a stable family, and become the mother of many. And I hope, even in her well-established state then, she could still keep her lineage at heart, from our grandest grandmother all the way down to her mother: Uranium, Thorium, Radium, and, me, Radon.

What could I do to make sure that my daughter holds on to her past? Could I write a letter, just like my mother left to me? Maybe that was a good option, since I inherited from my mother all the letters left from mother to daughter starting with the grandma Uranium. Yes, I could abide by the tradition of letters, and tell my daughter how much I loved her even before I could hold her in my arms. I could tell her that she had appeared in my dark night like a bright star, although she was yet in my womb. Maybe this way, she could feel at ease when with people, unlike her mother. She could make real friends and be happy with them, even if I won’t see her once.

Yes, I won’t see you, sweetie. It is what the doctors told while giving me your glad tidings: that I had cancer, and that my body would not sustain a birth. I had to choose between carrying you and a life without you. I chose to live with you, my precious, even if that meant the end of my life when yours bloomed. When you are going to be reading this letter, I’ll be watching you with your aunts. Shine and make us smile with your beauty.

Love,
Your mom Radon

The day my husband died, my work for a newspaper had taken me out of the office to do interviews and take pictures. I hurried back to my computer because I wanted to finish early. The man I had loved for three decades had not been well for several years. He had attempted suicide several times before, and I had always been there to stop him, but today – on a most magnificent Tuesday, the kind of day only an Alabama sky can provide – I was worried. The weekend had given us new problems, and new problems usually brought with them reactions that could range from unusual behavior to a complete loss of hope.

I telephoned him as I drove from one interview to the next. We talked briefly about ordinary things and about my new idea: that he should try out a new program I had found. He had been diagnosed with bipolar depression in 2004, a behavioral disorder that decreases a person’s ability to handle stress. The toll this took on him in a few years far exceeded the ravages of major depression he had dealt with alone for a lifetime.

Those years had taken a toll on me, too. But I had no idea what lay just ahead. Suicide is not just a personal disaster. It happens to everyone in a family and devastates whatever life came before, changing forever those who are left behind.

After writing my column for the week, I left work early. I felt desperate to get home. On the way, I called him again. The day before had been his fifty-eighth birthday. Our plans had changed a couple of times recently, but the weekend had been eerily quiet. On Sunday afternoon, we sat on the deck in the sunshine. I grew tired watching him go through boxes of papers and discard this or that. At the time I thought he was just organizing. I left him to go inside and take a nap. When I returned he had finished, and the day ended with the sweetness I had known for so long: the satisfying closeness of just being with him.

But by this Tuesday, around four o’clock, the calls between our cell phones kept dropping – or perhaps he kept hanging up. I told him I was on the way home. As I did, I passed a grocery store and thought I should stop for a birthday cake. Yesterday had not gone well, and today I had a chance to do something special for him, but I was exhausted and felt driven to be with him. Something was wrong. I was sure of it. I didn’t stop, a fact I regret.

His voice, when we spoke again, was too calm. He told me he had broken into the gun safe, the one I bought after he had his first psychotic break. I realized later he could have done that at any time. My false sense of security had been nothing more than a thin veil.

“I’m not mad.” Inside, I panicked. What would I do now that I only had my voice with which to save his life? “Where are you?”

Carefully, as if speaking to a child, he told me. I asked him to put the pistol down and cross the road to our neighbor’s house. When the connection broke, I dialed 911, reported the situation, and heard the words that would change the course of my thinking.

“Don’t go in,” the operator said. “Sometimes they wait until they see you before they do it. Park on the side of the road where he can’t see you.”

That was something I had not thought of before. It terrified me. Woodenly, I obeyed. Now I had entered an alternate reality, shock creeping over me like a blanket. I stopped the car as close to the house as I could without being seen.

Eventually, a young deputy arrived, took my house key, and went inside, finding my husband’s body. He came back to my car, where I waited. Through the window, which was rolled down, he extended his hand, and I latched onto two of his fingers with my own. His expression was so pained that I couldn’t bear to make him tell me what he had found.  

“I know,” I told him, and he explained that the scene would first have to be treated like a homicide. I nodded and stayed where I was as he drove back to the house.

It took more time for neighbors to arrive and the call to go out to our church friends who gathered around the car and waited with me. I made calls to his family and to our children in three different states. I was deep in shock.

From there, the nightmare of the past few years changed into the hellish existence of a grief I had never known before. I was familiar with death. My mother had died. So had my father and my brother-in-law. Even in childhood, in my life as a preacher’s kid it was not uncommon for me to attend every funeral and visit every grieving household. I played the beautiful organ in our church sanctuary at the funeral of one of my best friends’ father when I was only nine or ten years old. I had read and written about death, but this was different.

Sometimes suicide comes without warning, but for several years before my husband’s suicide, his uncontrollable, rapid cycling moods and bizarre episodes left us both drained. He was at the mercy of his illness, and as I tried to help him and to get help for him in every way I could, I was at the mercy of his illness as well.

Physically, I had already used almost all of my strength. I had no reserves. My body was anemic; my mind was in a state of constant crisis. Even the moments between emergencies became crises because those were the waiting and worrying times. I never knew what would be coming next, but I knew it would be horrible.

Suddenly, as I sat in my car on the side of the road, he was gone, and I entered the aftermath of suicide. Since that day, I’ve worked alongside thousands of other survivors of suicide loss to try and understand what happened; and to mourn, heal, and rebuild. To help myself, I had to help others who were struggling through similar situations.

I discovered that grieving and hope can become entangled with regret and guilt and so many other emotions. During this confusing time, hope is a concept that is difficult to hold onto. Hold onto it we must, however, even if we have to borrow strength from each other.

Suicide changes us, but together, we can turn mourning into joy. For me, healing became a three-step process. I first found that co-support fortifies survivors so that obstacles like secondary wounding do not halt progress toward a successful return to life. Then, there is the essential but difficult step that enables survivors to let go of their past lives and turn toward new ones. No one wants to go on without a dear loved one, but a healthy recovery from grief depends on finding the strength to let go. Without this interim step, a survivor may not realize there are other ways to carry forward the memory of the lost one, other kinds of relationships that can be built with the departed. Lastly, there is an internal drive that emerges in most survivors that motivates them to go beyond just surviving to making meaning out of loss. This can manifest first as an instinctive need to do something. This guiding force inspires survivors to find or to create ways to carry a message forward, to turn their own personal tragedies into victories by helping others. They may write books, found organizations, set up foundations, or contribute in other ways. Many of these are artistic or creative in nature and come straight from the heart.

Suicide touches all kinds of people from every background and belief system. It can create a barrier between those closest to the person who died and those around them. Historically, suicide has been viewed by many societies as a social taboo, but the underserved stigma, shame, and shunning that surround suicide is being dispelled by the efforts of loved ones who are banding together to share both pain and healing. One such group – the Alliance of Hope for suicide loss survivors (www.allianceofhope.com) – is attempting to change the culture surrounding suicide worldwide. With the guiding slogan “Kindness Matters,” members share the simple but powerful knowledge that one can not only survive the loss of a loved one or friend to suicide but also can go beyond just surviving to rebuild happy, productive lives.

“You are not alone.”

“This was not your fault.”

“Healing is possible.”

“There are specific things you can do to build a new life that honors the one you lost.”

When I reach out in this way to comfort a mom or dad, a partner or child who is in more pain than they ever knew existed, it is because of the many times I saw my husband’s gentleness, his respect for all living things, his brilliant mind at work. His life is not defined by how he died. Neither is mine. He made such an impact on my life and on the lives of anyone who knew him that even his illness – even suicide – could not change the good he did in the world.

I can only hand survivors a little hope, but in that moment, hope is enough.

There is blood and sweat on the brow of the past
Iron fetters on its feet,      
A bitter smile on its lips.
What a red spirit it clashed with…


There is still occasional darkness on the horizon;
However, day follows the night…
Autumn fell in and all the orchards decayed.
Leaves turned yellow and flowers faded.

The hero died, and his steed was tired;
He had fought with a huge malicious demon.

Now even if it seems impossible for him to return, 

We’re waiting for him at rosy dawns…
The crowns that once shone,
The slopes that opened their bosoms to the crowned.

Emerald trees on golden slopes,
Reached the caravan of separation and left.


There’s a spark from that frightful extinction

There are messages in the spark from the return.

The place of some individuals in altruistic work cannot be denied; however, individuals are not all there is to this work. Personalities are important, on the one hand, for the Prophet Muhammad, peace be upon him, is a personality and God commanded us to become bound to him. The most important factor in this is virtue. People become tied to others because of their virtue. For example, if it were not for Abu Hanafi, we would not know the Hanafi school of thought. For this reason we have a heartfelt tie. In the same way, someone from the Shafii school is tied to Imam Shafii, a person from the Maliki school is bound to Imam Malik and someone from the Hanbali school is tied to Ahmad b. Hanbal.

Just as virtue is a means for connection among people, everyone’s applauding it is a sign of appreciation. Yes, as an expression of appreciation, it is necessary to salute those who enlighten humankind. This is our duty. However, if the person who is saluted sees the situation as connected to himself, then he has attributed a partner to God.

In a hadith the Messenger of God says, “Let the person who awaits the salute of others prepare his place in Hell.” For example, you need to stand up when your teacher comes to your side. However, if your teacher wants and expects others to stand up, then he is at a loss. In fact, one day drawing attention to the sensitivity of this matter, the Prophet said to the Companions who stood up for him, “Don’t stand up when I come upon you as others do (who stand up to exalt their master)!” Of course this is the refined manner of a great person or, in other words, the attitude a great person should take. It is our responsibility to behave respectfully to them in spite of this kind of wish.

Another aspect of the matter is that good works, which require full, comprehensive, and strong support, should not be built on personalities. People in service to others should establish agreement and accord among themselves and in view of their successes they should say, “God is bestowing all of this on our collective body.” They should convince their egos of this because the blessings coming to them come as a result of their coming together.

Meanwhile they should cast from their minds the thought, “If such and such a person leaves this circle, it will give harm to our group.” For if a cause is really for God, no one can give harm to His cause by leaving the circle. Consequently, becoming tied to certain individuals and knowing everything to be a result of their efforts within the understanding, “Our group will disintegrate and disperse,” is contrary to Islam’s pure and clear belief. In order for the matter to be better understood, I would like to give one or two individual examples:

It is not possible to imagine a person who could love the Blessed Prophet as much as Abu Bakr. In fact, in one hadith the Messenger of God expresses this truth, “When everyone denied me, he affirmed me.” Ali expressed Abu Bakr’s love and attachment to the Prophet as follows: “When it was time for the Prophet of God to go, no one had the courage to go with him. Abu Kuhafa’s son (i.e. Abu Bakr) stood up. When everyone was making suggestions in the apostasy events, he mounted his horse and said, ‘I will follow the Prophet’s path even if I am alone.’”

We see that although he loved the Messenger of God this much and never left his side for a moment, Abu Bakr was not at Ali’s side during the Prophet’s funeral. For at that moment there was a more important matter; achievements of the Prophet could fall apart, some could sow discord among Muslims and irreparable division could occur.

Just at that moment Abu Bakr immediately appeared and said, “Whoever worships Muhammad should know that he has died. Whoever believes in God should know that He is the All-Living and the Self-Subsisting.” When he recited the verse, “Muhammad is no more than an apostle. Many were the apostles that passed away before him. If he died or were slain, will you then turn back on your heels? If any did turn back on his heels, not the least harm will he do to God. But God, on the other hand, will swiftly reward those who (serve Him) in gratitude,” (Al Imran 3:144) Umar, who reflected the general feeling, would say, “(Upon Abu Bakr’s recitation) I felt like that verse was just revealed. Abu Bakr warned us.” Later, as is known, very conscientious believers who grasped the Messenger’s cause well, like Abu Bakr, Umar, and Abu Ubayda, gathered at Bani Saqifa and resolved the matter of caliphate there.

All Companions loved the Prophet very much and all were bound to him from the heart. Actually there is no harm in such a tie. However, seeing the message he brought as tied to him and thinking that everything is finished when he left is wrong.

We also see this portrait of consciousness that Abu Bakr displayed in Umar’s time as well. Halid was the commander of Caliph Umar’s army. When he rode his horse over Persia, he demolished all of Persia’s forces. When he rode over the Roman Empire, he destroyed its walls as well and showed an unequaled military genius.

Umar discharged this great commander and gave the following reason for it: “Halid! God knows I love you very much. But the people are attributing victories to you. But I know that God is bestowing these victories. For this reason, I am relieving you of your duty.” After Halid was removed from duty, the victories continued and the people understood that the victories were from God, not Halid.

Just as in the past, today there are those who fall into this mistake and attribute matters to individuals. Whereas, just as conquests in Islam continued after the Prophet’s death, conquest in the spiritual field always continued. For example, Abd al-Qadir Gilani and Shah Naqshiband have died, but their followers have continued until today.

Bediuzzaman, the great thinker of our time, died, some viewed things as if everything was over. However that great man said, “While I am an individual in this life, when I am under the ground I will be like an ear of corn. In comparison to service to the faith appearing in one place, after my death it will appear in perhaps one hundred places.”

Again this same great man gave us this yardstick on this subject. He once said that his students confused the real cause with the apparent cause when they said, “If our teacher had not come here, we would not be learned.” Bediuzzaman continued that he would do the same confusion, “I once was saying that if there had been no one holding a pencil like these brothers, how could a half-literate person like me serve this cause (and produce books)? Later I understood that after giving you the sacred blessing by means of a pencil, God bestowed success in this service upon me. Two things that have conjoined one another cannot be the cause of one another. I do not thank you, I congratulate you. As the price of your gratitude to me, you, too, pray and give congratulations.”

Actually every believer should think like this. For God’s grace comes to all of us commonly. There is a conjunction everywhere from the doorkeeper who opens the door to an institution to the director who manages the institution. May God give us success in showing effort in this comprehension and association!

A: This is a very comprehensive subject. From one perspective it’s open to debate. It’s very difficult to summarize my thoughts on this kind of platform. In one sense we don’t separate men and women. In another sense there are physical and psychological differences. Women and men should be the two sides of truth, like the two faces of a coin. Man without woman, or woman without man, cannot exist; they were created together. Adam suffered in Heaven because he had no mate, and then Heaven became a real Heaven when he found Eve. Man and woman complement each other.

Q: If we approach the matter from an Islamic perspective?

A: Our Prophet, the Qur’an, and Qur’anic teachings don’t take men and women as separate creatures. I think the problem here is that people approach it from extremes and disturb the balance. There are differences on specific points. For example, men usually are physically stronger and apt to bear hardship, while women have deeper emotions; they are more compassionate, more delicate, more self-sacrificing. While looking for a place for each gender in society, we should consider these and other innate differences. God created everything, from sub-atomic particles to human beings, in pairs to form a unity.

Q: Are there examples for the female role?

A: In the social atmospheres of Muslim societies where Islam is not “contaminated” with customs or un-Islamic traditions, Muslim women are full participants in daily life. For example, during the Prophet’s time and in later centuries when the West gave women no place in society, when the West was debating whether or not women had spirits or were devils or human beings, A’isha (one of the Prophet’s wives) led an army. She also was a religious scholar whose views everyone respected. Women prayed in mosques together with men. An old woman could oppose the caliph in the mosque in a judicial matter.

Even in the Ottoman period during the eighteenth century, the wife of an English ambassador highly praised the women and mentioned their roles in Muslim families and society with admiration.

Q: Can women be administrators?

A: There’s no reason why a woman can’t be an administrator. In fact, Hanafi jurisprudence says that a woman can be a judge. Maybe some women could explain certain matters more comfortably to a judge of their own gender.

Q: How did the Prophet view children?

A: He treated his children and grandchildren with great compassion, and never neglected to direct them to the Hereafter and good deeds. He smiled at them, caressed and loved them, but did not allow them to neglect matters related to the afterlife. His ultimate goal was to prepare them for the Hereafter.

All of the Prophet’s sons had died. Ibrahim, his last son born to his Coptic wife Mary, also died in infancy. The Messenger often visited his son before the latter’s death, although he was very busy. Ibrahim was looked after by a nurse. The Prophet would embrace, kiss, and caress him before returning home. When Ibrahim died, the Prophet took him on his lap again, embraced him, and described his sorrow while on the brink of tears. Some were surprised. He gave them this answer: “Eyes may water and hearts may be broken, but we do not say anything except what God will be pleased with.” He pointed to his tongue and said: “God will ask us about this.”(1)

Whenever he returned to Madina, he would carry children on his mount. On such occasions, the Messenger embraced not only his grandchildren but also those in his house and those nearby. He conquered their hearts through his compassion. He loved all children.

Q: How should parents treat their children?

A: These who bring children into this world are responsible for raising them to realms beyond the heavens. Just as you take care of their bodily health, so take care of their spiritual life. For God’s sake, have pity and save the helpless innocents. Do not let their lives go to waste.

The future of every individual is closely related to the impressions and influences experienced during childhood and youth. If children and young people are brought up in a climate where their enthusiasm is stimulated with higher feelings, they will have vigorous minds and display good morals and virtues.

The first school for children, whose souls are as bright as mirrors and as quick to record as cameras, are their homes. Their first educators are their mothers. Thus it is fundamental for a nation’s existence and stability that mothers be brought up and educated to be good educators for their children.

If parents encourage their children to develop their abilities and be useful to themselves and the community, they give the nation a strong new pillar. If, on the contrary, they do not cultivate their children’s human feelings, they release scorpions into the community.

Improving a community is possible only by elevating the young generations to the rank of humanity, not by obliterating the bad ones. Unless a seed composed of religion, tradition, and historical consciousness is germinated throughout the country, new evil elements will appear and grow in the place of each eradicated bad one.

Children should respect and obey their parents as much as possible. Parents should give as much importance to their children’s moral and spiritual education as they do to their physical growth and health, and should entrust them to the care of the most honorable teachers and guides. How ignorant and careless are those parents who neglect their children’s moral and spiritual training, and how unfortunate are the children who experience such neglect and are so victimized.

Children who are inconsiderate of their parents’ rights and disobey them are “monsters derived from a deteriorated human being.” Parents who do not secure their children’s moral and spiritual welfare also are merciless and cruel. Most brutish and pitiless of all are parents who paralyze their children’s moral and spiritual development after their children have found their way to human perfection.

Q: What about young people?

A: Those who wish to predict a nation’s future can do so accurately by analyzing the education and upbringing its young people receive.

Desires resemble sweets, and virtues resemble food that is a little salty or sour. When young people are free to choose, what are they likely to prefer? Regardless of this, however, we must bring them up to be friends of virtue and enemies of indecency and immorality.

Until we help our young people through education, they are captives of their environment. They wander about aimlessly, moved by intense passions and far away from knowledge and reason. They can become truly valiant young representatives of the national thought and feeling only if their education integrates them with their past and prepares them intelligently for their future.

Think of society as a crystal vessel, and of its young people as the liquid poured into it. Notice that the liquid assumes the vessel’s shape and color. Evil-minded champions of regimentation tell young people to obey them instead of the truth. Do such people never question themselves? Should they not also obey the truth?

A nation’s progress or decline depends on the spirit and consciousness, the upbringing and education, given to its young people. Nations that have raised their young people correctly are always ready for progress, while those who have not done so find it impossible to take even a single step forward.

A young person is a sapling of power, strength, and intelligence. If trained and educated properly, he or she can become a “hero” who overcomes obstacles and acquires a mind that promises enlightenment to hearts and order to the world.

So-called ‘new’ viruses most probably derive from existing viruses; in general, viruses of today have ancestors and relatives. However, as viruses show great variety, and many of the viruses of gravest concern mutate rapidly and unpredictably, it is not always possible to trace their ancestry with any great confidence. A ‘new virus may be genuinely new or a major evolutionary variant arising from genetic processes such as mutation or recombination. Their rate of mutation is so high that controlling them, or predicting their behaviour, is well-nigh impossible. High mutation rate means that no RNA (ribonucleic acid) virus population is a single entity, but rather a ‘quasi species’. Introduction of a virus from one species to another and dissemination from a smaller to a larger population are also among the basic mechanisms by which viruses emerge.

The emerging viruses are surfacing from ecologically damaged parts of the earth. When viruses come out of an ecosystem, they tend to spread in waves through the human population. Among the most notorious are: Lassa, Rift Valley, Oropuche, Rocio, Q. Guanarito, VEE, Monkeypox, Dengue, Chikunganya, the Hanta viruses, Machupo, Junin, the rabies like strains Mokola and Duvenhage, LeDantec.

AIDS: Acquired Immunodeficiency Syndrome

Human immunodeficiency virus (HIV) is a more difficult case compared to, for example, influenza, itself a great killer – the influenza pandemic of 1918-9 in China caused some 20 million fatalities. We do not know the origin of HIV, but a probable primate origin is often suggested, and appears highly plausible. HIV-2 (one of the major strains of HIV) may be a mutant that jumped into humans from an African monkey known as the sooty mangabey, perhaps when monkey hunters or trappers touched body tissue. HIV-1 (the other strain) may have jumped into man from chimpanzees – perhaps when hunters butchered chimpanzees.

HIV attacks the type of lymphocytes known as helper T-cells that stimulate the activity of B lymphocytes that produce antibodies. After an HIV infection sets in, helper T-cells begin to decline in number and the person becomes more susceptible to infections.

The AIDS virus mutates rapidly and constantly. It is a hyper-mutant, a shape-shifter, spontaneously altering its character as it moves through individuals. It mutates even in the course of one injection.

The drug AZT has been found to be helpful in prolonging the lives of AIDS patients. Also, it has been shown that administration of Interleukin-2 and AT-538 can prevent viral replication in cells in the early stages of the infection.

The Filoviruses

Marburg and Ebola viruses were recently elevated to family status as the Filoviridae. The name, ‘thread viruses’, is based on their morphology. These viruses made their appearance in the 1960s and 1970s in the form of frightening nosocomial and occupational outbreaks, initially among polio vaccine production workers in contact with Ugandan green monkeys and their kidney tissues, then in independent hospital epidemics of devastating proportions during 1976 in the Sudan and Zaire. Mortality from these infections can range to nearly 90%, that is 90% of infections, not just of clinical illnesses.

The incubation period of a filovirus in a human being, is from 3 to 18 days during which time the number of virus particles climbs steadily in the bloodstream. Then the suffering begins.

Marburg was the first filovirus to be discovered. It erupted in a factory producing vaccines using kidney cells from African green monkeys. Thirty-one people caught the virus. Seven infected persons died in pools of blood in just two weeks. This fatality rate of one in four makes Marburg an extremely lethal agent, yet it is the mildest of the filoviruses. No vaccine is available.

Ebola Sudan

The next indication of the existence of filoviruses came from an extraordinary pair of epidemics in 1976. In the Sudan the initial focus was a cotton factory in Nzara, and several of the earliest recognized cases worked there in a single room. Travel to nearby Maridi introduced the virus into the medical care system, with subsequent latrogenic dissemination that devastated the Maridi hospital. In this outbreak, 150 out of 280 infected people died.

In 1979, it recurred in Nzara, Sudan. The index case had worked in the same room in the cotton factory identified in the earlier epidemic. Twenty-two out of 34 infected patients died. When it first erupted, the medical stuff had used dirty needles which facilitated the spread of infection. Again, no vaccine is available.

Two months after the start of the Sudan emergence in 1976, an even more lethal filovirus emerged. The Ebola Zaire, a new strain was nearly twice as lethal as Ebola Sudan. The fatality rate of Ebola Zaire is 9 out of 10. Staff at a hospital which had been at the epicenter of the epidemic were almost all wiped out: 13 out of 17 of the doctors and nurses died. The disease erupted more or less simultaneously in fifty-five villages near the headwaters of Ebola River.

This epidemic was clearly dependent on the use of unsterilized needles and syringes for its major dissemination between villages, although multiple later generations of cases occurred among family contacts without any defined exposure route.

Ebola is distantly related to measles, mumps and rabies. It is also related to certain pneumonia viruses, to the parainfluenza virus which causes colds in children, and to the respiratory syncytial virus, which can cause fatal pneumonia in a person who has AIDS.

Ebola kills a great deal of tissue while the host is alive. It triggers a creeping, spotty necrosis that spreads through all the internal organs. The liver bulges up and turns yellow, begins to liquefy and then it cracks apart. The kidneys become jammed with blood clots and dead cells, and cease functioning. As the kidneys fail, the blood becomes toxic with urine. No vaccine is available.

Ebola does in ten days what it takes AIDS ten years to accomplish. In principle Ebola-like viruses could spread out all over the world in just one month and a half. Richard Preston, the author of Hot Zone argues that AIDS may be the first step in a natural process of clearance. What is being cleared is human beings: the earth’s immune system, so to speak, has recognized the presence of our species and is starting to kick in and signal its potential to rid itself of an infection by human beings. There can be no excuse for failing to reflect radically on the way we manage our economies, our societies and our lifestyles. We have no absolute right of tenure of this planet, nor does our collective intelligence or our science and technology afford a reliable immunity from vulnerability, whether as individuals or as a species. We do need to be fearful perhaps, though not to panic – so that we redress the balance in favour of humility in our attitudes and activities, so that we become more caring and careful in using our God-given faculties to prevent the worst before it happens.

References

• MADER, S. S. (1992) Human Biology, WCB Group.
• PRESTON, R. (1993) Hot Zone, Random House, New York.
• MORSE, S. 5. (1993) Emerging Viruses, Oxford University Press, New York.
• DOWDLE, W. (1993) ‘The Origins of Plagues’, Science, 261 (September 17).
• GRIFFIN, B. E. (1994) ‘Live and Let Live’, Nature, 368 (March 3).