Word: tb
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Dates: during 1990-1999
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...including smallpox, measles, influenza, malaria and tuberculosis. Never having been exposed to these ailments, natives had no immunity. Now, though, the European invaders have been exonerated as the carriers of at least one disease to the New World. Scientists said last week that they had found DNA from the TB bacterium in the mummified remains of a woman who died in the Americas 500 years before Columbus set sail from Spain...
...researchers also reported that whenlaboratory cases of TB were considered, thevaccine was even more effective...
...clinical trials examined by the researchers, vaccine recipients had a 50 percent lower risk of TB than non- recipients. In the same trials, the BCG vaccinehad protected patients from death by TB 71 percentof the time...
...study, co-authored by Dean of the School of Public Health Harvey V. Fineberg, was prompted by a rise in the incidence of TB nationwide as well as scientific controversy about the effectiveness of the vaccine...
...TB rates have risen significantly over the pastdecade. Colditz said that from 1984 through thepresent TB rates have increased at least 20percent nationwide. And in the years from1980-1990, there was a 100 percent increase in NewYork City cases alone...