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Saturday 3 March 2018 at 15:09
Quoted from fosaisu:Too much variance would be my guess -- too many strains and too much mutation for a vaccine to be successful. Vaccines work better on the more static varieties like M,M, and R.
Now here's my advice, if you want to make money don't waste your time in cold and flu. Too hard and i...
Source: http://pinside.com/pinball/forum/topic/do-you-get-a-sesonal-flu-shot/page/9#post-4260995