For the first time, researchers report drug resistance in type B influenza virus, which causes about 30 percent of flu cases in the United States. Furthermore, the researchers say that unlike a previously noted drug-resistant type A strain, this strain may jump from person to person.
“We’ve found a very clear case of resistance in the presence of antiviral drugs,” says Yoshihiro Kawaoka of the University of Tokyo and the University of Wisconsin–Madison.
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