To better understand what we"re up against, a massive collaboration has been taking place across 2,500 European pig farms, sampling more than 18,000 individual pigs. The scientists involved found that influenza A viruses – those which can become human pandemic viruses – were present 

อ่านต่อได้ที่  :  โรงเรียนวัดควนสูง

สาระน่ารู้  :  สุขอนามัย