![]() ![]() Thats why pigs are considered an amplifier host of this virus.īut infection with FMD virus is a rare misfortune in humans, seldom causing worse than a rash on the hands, the feet, or the mouth lining. One experimental study found that pig breath carried thirty times as much FMD virus as the breath of an infected cow or sheep, and that once airborne it could spread for miles. They sneeze it, they chuff it, they oink it, they wheeze it and burp it and cough it into the air. Their specificity, and the fact that they remain in the bloodstream even after the intruder has been conquered, make them valuable as evidence of present or past infection. ![]() ![]() They are custom - shaped to merge with and disable that particular virus, or bacterium, or other bug. Each of them reflects the action of a pathogen that can cross into people from other animals.Īntibodies are molecules manufactured by the immune system of a host in response to the presence of a biological intruder. ![]()
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