No pig in a poke.
Brian F
BF
Mandell
D000368:Aged; D004196:Disease Outbreaks / Q000517:prevention & control; D005260:Female; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000517:prevention & control*; D011247:Pregnancy