April 2009

Oseltamivir resistance decreases influenza aerosol transmission

The isolates of influenza virus obtained in the current global outbreak have proven to be resistant to the adamantane antivirals, but susceptible to oseltamivir (Tamiflu) and zanamivir (Relenza). Consequently the two neuraminidase inhibitors will likely be used extensively to control the outbreak until a vaccine is available. Extended use of the antiviral drugs will undoubtedly …

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Swine influenza A/Mexico/2009 (H1N1) update

Here is an update on the global swine flu situation as of 29 April 2009. Not surprisingly, laboratory confirmed case counts continue to rise globally. There are 91 cases in the US in 10 states (Arizona, California, Indiana, Kansas, Massachusetts, Michigan, Nevada, New York, Ohio, Texas). There has been a laboratory confirmed fatal case in …

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Influenza virus transmission

Influenza virus may be transmitted among humans in three ways: (1) by direct contact with infected individuals; (2) by contact with contaminated objects (called fomites, such as toys, doorknobs); and (3) by inhalation of virus-laden aerosols. The contribution of each mode to overall transmission of influenza is not known. However, CDC recommendations to control influenza …

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