Is it worse to be licked or sneezed on?

摘要

Different diseases affect different fluids in the body, so it's hard to give a simple answer to this question. HIV, for example, shows up at infectious Levels in blood, semen, vaginal and rectal secretions, and breast milk. But an HIV-infected patient's sneeze or spit poses very little danger. On the other hand, the germs that cause conjunctivitis, or "pink eye," come out in tears, and the virus responsible for mononu-cleosis swims around in the saliva.