“Canadian Flu Vaccine Paradox”…Causing More Illness
“People who receive flu vaccines year after year can sometimes show reduced protection, an effect that Canadian infectious disease specialists say muddies public health messages for annual flu vaccine campaigns.
During the 2009 H1N1 pandemic, researchers at the B.C. Centre for Disease Control originally thought seasonal flu shots from 2008 might offer extra protection against the new pandemic strain. They were puzzled to find instead, seasonal flu vaccination almost doubled the risk of infection with pandemic flu.” -CBC News