A mutation of the influenza A (H1N1) virus that is resistant to the drug oseltamivir may pose a serious health threat to hospitalized patients who have a weakened immune system, according to a new study.
A mutation of the influenza A (H1N1) virus that is resistant to the drug oseltamivir may pose a serious health threat to hospitalized patients who have a weakened immune system, according to a new study.