Thursday, May 7, 2009

False Alert with Swine Flu?

“With Mexico saying the worst may be over and the new H1N1 virus starting to look more like a seasonal flu strain in the United States and elsewhere, critics are going to start asking if public health officials overreacted to the outbreak.” – Reuters news
Again I hate to bash the media but it seems that most TV/Radio/Newspaper coverage has only two modes: “full coverage emergency” and “not worth discussing”. In just over a week swine flu has gone from “The End of the World as We Know It” to “never mind, just a normal flu, nothing to worry about”.

The truth lies somewhere in the middle.

Was this a false alert like the Swine Flu of 1976?
No. The President Ford swine flu was found on one military base in NJ and did not spread. In contrast, the swine flu of 2009 is very contagious. Thousands of cases in Mexico and within a few weeks it had spread to over a dozen countries around the world. The World Health Organization rightly classified this as phase 5 (Pandemic Imminent).

Is this swine flu dangerous?
Yes. One thing I’ve learned from this emergency “drill” is that “normal” flu is dangerous. How did it happen that 2000 yearly flu deaths in NYC and 36,000 deaths annually in the US are considered “normal”? Consider the mothers protesting against the Iraq War and the deaths of their sons. In six years since 2003 the numbers of US casualties has been 4284. During the same period there were 216,000 flu deaths, 50 times the number of soldiers killed. Why don’t we see mothers protesting for better flu drugs?

Was it wrong to close schools, etc?
No. Consider the game of Russian roulette. Is it safe because 5 times out of six, nothing happens? When this flu appeared it spread fast and its potential was unknown. Suppose we treated it as “normal” and allowed it to spread and THEN discovered it was a killer. By that point the horse is out of the barn and there is no going back. The right time to stop a potential pandemic is at the beginning.

Is this swine flu just a “normal” flu?
Unknown. The death toll in Mexico was overstated with many sicknesses related deaths misclassified as swine flu. Scientists now think this is NOT a “killer” flu but it may be stronger than your average flu. The medical studies are still being done to exactly classify this flu strain.

Won’t my flu shot protect me? What about the drug Tamiflu?
No. Flu shots work by giving you a small sample of dead flu viruses so your body can learn the shape and create antibodies before the live virus invades. The Mexican swine flu is a new variant that no one is yet protected against. There are also some reports from Mexico of doctors & nurses who had taken Tamiflu but still caught the flu. For swine flu Tamiflu may be better at relieving symptoms than in prevention.

Bottom Line

Is the danger over?
As stated in the article, Scientists dig for lessons from past pandemics, “In each of the four major pandemics since 1889, a spring wave of relatively mild illness was followed by a second wave, a few months later, of a much more virulent disease. This was true in 1889, 1957, 1968 and in the catastrophic flu outbreak of 1918”.

Flu viruses are constantly evolving and changing – hence the need for a new flu shot each year. A global killer virus needs two things – the ability to spread and the ability to kill. The current swine flu shows it has the ability to spread quickly. As thousands or millions or even billions of people become infected, the likelihood of mutations increase. Most mutations will be harmless. But it takes just one bad roll of the cosmic dice to change swine flu into a deadly & contagious virus. We can hope this won’t happen but we should prepare now in case it does.

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