Word: infects
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Dates: during 1950-1959
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Experts believe that epizootics of rabies are largely a result of over-population among certain animals. When foxes, for instance, get too thick, those that have got the disease from an outside source can find many others to bite and infect before they die. When the population thins out, rabies becomes rare because its victims die in solitude without spreading the disease...
...Bolles, new athletic director, was the second speaker. Bolles told the crowd that spirit was "contagious," and he asked each member of the audience to "infect" his neighbor...
Rust has another way of wintering. When the weather begins to get cold in the north, the fungus produces black, cold-proof spores. These spend the winter on straw or stubble. In spring, they germinate, sending out small spores that infect barberry bushes. Up to 70 billion vigorous spores can form on an average barberry bush. Each spore can start a fast-spreading infection in a stand of wheat...
...evidence that "you don't catch a cold-you have it," Dr. Kerr told how he and fellow workers at the University of California tried to infect subjects with another person's cold. People without colds would play cards or work jigsaw puzzles for hours next to a sneezing, sniffling victim; others drank from glasses smeared with a cold sufferer's sputum. Even so, said Dr. Kerr, his healthy subjects failed to catch colds...