Mosquitoes carry disease-causing viruses and parasites from person to person without catching the disease themselves. The mosquito that bites an infected person and then bites an uninfected person might leave traces of virus or parasite from the infected person's blood. The infected blood is injected through, or on, the "dirty" probiscus into the uninfected person's blood and the disease is thus spread from person to person. When a mosquito bites, she also injects saliva and anti-coagulants into the blood which may also contain disease-causing viruses or other parasites. This cycle can be interrupted by killing the mosquitoes, isolating infected people from all mosquitoes while they are infectious or vaccinating the exposed population.
Wikipedia
2007-07-14
01:30:37
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Calvin James Hammer
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Health
➔ Diseases & Conditions
➔ Infectious Diseases