Health | Studies: Swine flu spreads long after fever has stopped | Seattle Times Newspaper:
"Doctors know that people can spread ordinary seasonal flu for a couple of days before and after symptoms start by studying the virus that patients shed in mucus. The first such studies of swine flu are just coming out now, and they imply a longer contagious period for the bug.
In addition to the Canadian study, Dr. David C. Lye at Tan Tock Seng Hospital in Singapore found that 80 percent of patients had it five days after symptoms began, and 40 percent seven days after. Some still harbored virus as long as 16 days later."
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