"Our first surprise in this surveillance programme is that… about 30% of pigs were positive for influenza A virus. This is a lot," Beer says. Pigs, like humans, are susceptible to more viruses when they are young because they have not yet had time to build up the antibodies needed to fight them. In Europe"s intense pork production system, pigs live to be just six months old before they are killed. That"s not yet old enough to fight off most influenza viruses

อ่านต่อได้ที่  :  โรงเรียนวัดควนสูง

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