Maggie Koerth-Baker is a journalist specialised in science. She's tweeting on the evolution of the virus.
About antiviral medications like tamiflu - those drugs could, theoretically, work as a preventative measure. But, according to Christine Layton, a public health policy analyst with the North Carolina-based non-profit research institute RTI International, that would be a REALLY bad idea. She says:
‘Influenza (like other viruses) can become resistant to antiviral medication. When this occurs, antiviral medications are no longer effective. The best way to prevent the development of resistant viruses (or bacteria) is to use antiviral (or antibiotic) medications only when infected with a virus which will respond to the medication.'
Another great way to keep from getting swine flu: don't go to Mexico. The State Department has said that all non-essential travel to the area should be avoided. Do what they say, here. Even if it ends up costing you some money on airline tickets, the risk of picking something up - and, perhaps worse, spreading it to family, friends, and everyone you share an airplane with - just isn't worth it. You don't want to be responsible for that."