Seasonal flu vaccine raises swine flu risk, vitamin D can help fight the virus
The conventional seasonal flu vaccine may have increased risk of infection with 2009 pandemic H1N1 swine flu, according to Canadian researchers.
Four studies suggest the same thing. In one study, the researchers analysed data from an ongoing sentinel monitoring system to compare people receiving seasonal flu vaccine with those who did not for their risk of H1N1 swine flu in 2009 and found that seasonal flu vaccine was associated with a 68 percent increased risk for getting infected with swine flu.
Other three studies found that seasonal flu vaccination was linked to a 1.4 to 5.0 fold greater risk of getting swine flu.
Danuta Skowronski, of the British Columbia Center for Disease Control in Vancouver, and colleagues who published their studies on April 6, 2010 in the online journal PLos Medicine could not confirm any causal relationship between use of seasonal flu vaccine and risk of swine flu.
The Food and Drug Administration has decided the next year's seasonal flu vaccine will contain virus intended to protect against swine flu.
The vaccination rate of swine flu vaccine was as low as about 50 million in the United States in 2009, media reports.
Those who suspect these vaccines may not be as effective as they want, then do not hesitate to take some vitamin D supplements. Studies have demonstrated that high doses of vitamin D can be comparable to flu vaccine, if not better, in preventing flu.
By Jimmy Downs