"Flu activity has increased sharply in the United States in recent weeks, with widespread activity reported in 49 states in the last CDC FluView report. While flu vaccination is the most important way to prevent influenza, antiviral drugs are the most important way to treat influenza infection. Studies have shown that early treatment with a flu antiviral drug can shorten the duration of fever and illness symptoms, and can reduce the risk of serious flu complications.
CDC recommends these drugs be used as soon as possible in people who are severely ill or people who are at high risk of serious flu complications who develop flu symptoms.
For people with an age or medical factor that puts them at high-risk of serious flu complications, prompt treatment with a flu antiviral drug can mean the difference between having a milder illness and a stay in the hospital.At this time vaccination to prevent future cases of influenza is still a good idea. There are likely weeks of flu activity to come during the current flu season so vaccination can still offer important protection. While influenza A(H3N2) viruses have been most common to date, it is not unusual for different flu viruses to circulate at different times of the season and most flu vaccines protect against four different influenza viruses..."
Protection against Flu