Word: vaccinees
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The flu-vaccine shortage never materialized, but that doesn't mean we're free from the flu yet. Health officials from around the world gathered in Vietnam last week to discuss a virulent form of bird flu that has already caused dozens of deaths in Asia. U.S. officials are moving...
Why are health officials so worried? There is currently no vaccine against H5N1, so it could spread easily in populations with no immunity to the virus. So far, there have been no confirmed cases of human-to-human transmission (all victims so far have contracted it from chickens or ducks...
Why does it take so long to develop a vaccine? All flu shots contain a blend of several virus strains, which take about four months to grow into a single strain inside chicken eggs in the lab. Doses can't be saved from year to year because the same strain...
The chicken-pox vaccine introduced in the U.S. in 1995 has cut infections, and the number of deaths per year from the childhood disease is down from 145 to 66. But some doctors are worried it could also lead to an increase in shingles, a related but even nastier disease...
The viciousness and intractability of bird flu are forcing the world to begin preparing for a pandemic. At the WHO's 32-nation executive board meeting last week, health officials debated plans to strengthen disease surveillance, stockpile antiviral drugs like Tamiflu, and boost research on a human vaccine that will...