The rapid onset of the flu season this year has led to absenteeism, hospitalizations and death. It has also led to misinformation about influenza and the government’s pandemic policies. Here’s a healthy dose of reality on how bad this year’s flu is, how to avoid it, and how to dispel four myths about it.
1. This season, the flu is deadlier than ever.
The influenza virus is one of the leading causes of death by infectious disease in the United States. It killed an average of 36,000 Americans annually in the 1990s. Approximately 675,000 Americans died in the great influenza of 1918-1919, and 70,000 perished in the Asian flu outbreak of 1957-1958. To put these numbers in perspective, about 400,000 Americans died in World War II.
That said, the Centers for Disease Control and Prevention (CDC) do not know exactly how many people die from seasonal flu each year. States do not have to report flu deaths among adults, and the cause of death for people with complications or secondary infections from the flu is not always clear. We will not know the estimated number of flu deaths this year for some time.
What we do know is that the flu has peaked quickly this year. The CDC found 22,048 cases of flu in the last three months of 2012, compared with 849 flu cases in the same period in 2011. We also know that 20 children have already died from this flu; 34 died during the 2011-2012 flu season, while 282 children died during the swine flu/H1N1 outbreak of 2009-2010. These figures suggest that this flu season will be worse than last year’s but not as bad as the one three years ago.
2. Drug companies deserve blame for vaccine shortages.
When producing vaccines each season, there’s no easy way for drug companies to know that they’ve made enough. Manufacturers made about 135 million doses of vaccine this season, of which 128 million have been distributed. Flu vaccine takes about nine months to make, which means that manufacturers have to start developing a vaccine well before flu season begins. Even though there have been some isolated shortages, particularly in the Northeast, drugmakers cannot easily adjust the number of doses once production is underway.
Manufacturers are more nimble than they once were and have reduced the time it takes to make an annual batch. Technological improvements, such as cell-based vaccines, could make the production cycle even shorter. (Cell-based vaccines are grown in cell cultures, unlike most flu vaccines, which are made inside fertilized chicken eggs, a slower technique that dates to the 1930s.) In fact, last November, the Food and Drug Administration approved the first cell-based seasonal flu vaccine in the United States.
Though for now we are largely stuck with the number of vaccine doses we already have, manufacturers base production targets on how many shots were used in previous years. Therefore, the best way to make sure we have more vaccine next year is to go out there and get that flu shot.
3. The vaccine won’t keep you from getting the flu — and it’s unsafe, anyway.
The flu vaccine is about 62 percent effective in preventing the flu — obviously not perfect. Still, vaccines are matched to this year’s flu strains, particularly the virulent H3N2 causing the worst problems, and are the best way to prevent infection should you be exposed.
Vaccines are also safe. Anti-vaccine advocates such as HBO talk-show host Bill Maher — who said on Twitter in 2009 that people who got swine-flu shots were “idiots” — have falsely suggested that the flu shot puts a live virus in your arm. Such rumors contribute to an unfortunate phenomenon: “vaccine hesitancy.” Respiratory-disease expert Frank Esper of UH Case Medical Center in Ohio told FoxNews.com that flu shots have “absolutely no live virus. ... You cannot get the flu from the shot because it doesn’t contain all the parts of the flu virus.” The CDC confirms this on its website.
Still, vaccine hesitancy gives people an excuse not to get a shot or to get one too late, as it takes about two weeks to develop immunity after vaccination. Vaccine naysayers, beware: You are missing out on your best possible protection.
4. People should stay away from enclosed spaces during flu season.
During the swine flu outbreak in 2009, Vice President Joe Biden said on NBC’s “Today” show that he “wouldn’t go anywhere in confined places now.” The statement caused an uproar and threatened to drive people away from air travel and public transportation. White House press secretary Robert Gibbs had to apologize for Biden’s remarks, which show how careful government officials must be in making public pronouncements. Not causing panic is more important than Purell in any flu-response plan.
While I wouldn’t recommended jumping into a pit filled with flu patients, simple prevention goes a long way. The best way to fight the virus is to apply lessons learned in kindergarten: Wash your hands often and well (sing “Happy Birthday” twice to make sure you’ve scrubbed long enough); cough into your sleeve and not into other people’s food or faces (and wash that shirt afterward); and stay home if you are feeling sick or running a fever.
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