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Is swine flu 'the big one' or a flu that fizzles?

(Agencies)
Updated: 2009-04-27 13:44

ATLANTA -- As reports of a unique form of swine flu erupt around the world, the inevitable question arises: Is this the big one?

Is this the next big global flu epidemic that public health experts have long anticipated and worried about? Is this the novel virus that will kill millions around the world, as pandemics did in 1918, 1957 and 1968?

The short answer is it's too soon to tell.

People wear surgical masks as a precaution against infection inside a subway in Mexico City, Friday, April 24, 2009. [Agencies] more photos

"What makes this so difficult is we may be somewhere between an important but yet still uneventful public health occurrence here -- with something that could literally die out over the next couple of weeks and never show up again -- or this could be the opening act of a full-fledged influenza pandemic," said Michael Osterholm, a prominent expert on global flu outbreaks with the University of Minnesota.

"We have no clue right now where we are between those two extremes. That's the problem," he said.

Health officials want to take every step to prevent an outbreak from spiraling into mass casualties. Predicting influenza is a dicey endeavor, with the US government famously guessing wrong in 1976 about a swine flu pandemic that never materialized.

"The first lesson is anyone who tries to predict influenza often goes down in flames," said Dr. Richard Wenzel, the immediate past president of the International Society for Infectious Diseases.

But health officials are being asked to make such predictions, as panic began to set in over the weekend.

The epicenter was Mexico, where the virus is blamed for 86 deaths and an estimated 1,400 cases in the country since April 13. Schools were closed, church services canceled and Mexican President Felipe Calderon assumed new powers to isolate people infected with the swine flu virus.

Related readings:  Mexico City locks itself in amid flu fears  Nation on alert as flu kills 81 in Mexico  World govts race to contain swine flu outbreak  Swine flu causes worldwide fears

International concern magnified as health officials across the world on Sunday said they were investigating suspected cases in people who traveled to Mexico and come back with flu-like illnesses. Among the nations reporting confirmed cases or investigations were Canada, France, Israel and New Zealand.

Meanwhile, in the United States, there were no deaths and all patients had either recovered or were recovering. But the confirmed cases around the nation rose from eight on Saturday morning to 20 by Sunday afternoon, including eight high school kids in New York City -- a national media center. The New York Post's front page headline on Sunday was "Pig Flu Panic."

The concern level rose even more when federal officials on Sunday declared a public health emergency -- a procedural step, they said, to mobilize antiviral medicine and other resources and be ready if the US situation gets worse.

US Centers for Disease Control and Prevention officials say that so far swine flu cases in this country have been mild. But they also say more cases are likely to be reported, at least partly because doctors and health officials across the country are looking intensively for suspicious cases.

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