It wasn't as virulent as expected. It had some similarities to the deadly WWI flu which caused authorities a lot of worry, but it wasn't the same; an article in "Science News" later noted a few key mutations which made it much less dangerous. (This analysis took so long the flu was out before they were sure.) I also suspect the rapid inoculation helped, even a few immune people can help a lot in the right places.
Last edited by Corona688; 10-05-2010 at 01:15 PM..