Seasonal flu shot may increase H1N1 risk
Last Updated: Wednesday, September 23, 2009 | 10:03 PM ET Comments243Recommend194CBC News
Across Canada, public health authorities are fiercely debating the idea of shortening, delaying or scrapping their seasonal flu vaccination campaign in favour of mass inoculation against H1N1. (Greg Baker/Associated Press)Preliminary research suggests the seasonal flu shot may put people at greater risk for getting swine flu, CBC News has learned.
"This is some evidence that has been floated. It hasn't been validated yet, it's very preliminary," cautioned