[click image]Health investigators are trying to figure out why swine flu has spread erratically, moving quickly through a few schools but slowly everywhere else, as another outbreak closed three schools Thursday in New York City.
The outbreak has left an assistant principal in critical condition and sent hundreds of kids home with flu symptoms, in a flare-up of the virus that sent shock waves through the world last month.
Schools are a good incubator for illness in general because space is tight and youngsters often don't practice the best hygiene, said Dr. Isaac Weisfuse, a deputy commissioner of the health department.
Across the country, most of the people getting the illness have been young. Some experts have speculated that older people might have some immunity to the virus because of genetic similarities to more common types of flu.
"We're trying to answer some of those questions," Weisfuse said.
Gee, how could these weird outbreaks keep happening? Hmmmm... who could even begin to guess?
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