The World Health Organization declared a swine flu pandemic Thursday — the first global flu epidemic in 41 years — as infections in the United States, Europe, Australia, South America and elsewhere climbed to nearly 30,000 cases.
Oseltamivir is used to treat some types of influenza (flu) in patients who have had symptoms of the flu for 2 days or less. Oseltamivir is in a class of drugs called neuraminidase inhibitors. These drugs work by stopping the growth and spread of the flu virus in your body. Oseltamivir helps shorten the time you have flu symptoms such as nasal congestion, sore throat, cough, muscle aches, tiredness, headache, fever, and chills.