Word: viral
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...killed one. Swine flu may also be related to the flu that killed over half a million Americans in 1918-19 (see box). Some felt that the rapid onset of the Legionnaires' disease was typical of flu. Others thought that the appearance of a condition similar to viral pneumonia, which can also be a result of influenza, was a convincing clue...
...rival polio-vaccine pioneer, Dr. Jonas Salk, disagrees. Describing the vaccine as safe, he pointed out that even a partial immunization program reduces the spread of the virus by closing what he calls the immunity gap. Said he: "Vaccine is the most useful tool we have for preventing viral disease...
...northern California waters. Each variety was washed in distilled water, dried, boiled and homogenized in a blender. A 1 % solution of the resulting liquid extract was applied to human cells that were then inoculated with type I or type II herpes. The solution proved 99% effective in stopping viral multiplication. When the solution was applied to cells already infected with herpes, the spread of the virus was reduced by 50%. While the extract has not yet been tested on other types of herpes-like viruses that are responsible for such illnesses as chicken pox, shingles and mononucleosis, the Californians believe...
Isolating the active substance, a polysaccharide, in ten of the 28 varieties of seaweed, the scientists discovered that this substance acts by blocking the viral adsorption point in the cell membrane-the point where the virus normally enters the cell. Human cells in culture appear to be otherwise unaffected by the substance and tests are already being made on mice and rabbits. But it will probably be as much as two years before researchers are certain enough about the safety of the extract to make it available to humans. The last promising technique for controlling herpes -daubing the skin eruptions...
Disease Agent. Finally, Lee made the crucial connection. He took viral material from a Korean subspecies of the mouse known as Apodemus agrarius and mixed it with blood serum from patients recuperating from hemorrhagic fever. The blood proved to contain antibodies-protective proteins developed by the body's immune system in response to invading foreign substances -that matched and combined with the viral material from the mouse. There were no such linkups when Lee did the same with the blood of people who had never suffered from hemorrhagic fever. Thus the mouse virus was almost certainly the cause...