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Fifth Disease

Especially common in children between the ages of 5 and 15, fifth disease typically produces a distinctive red rash on the face that makes the child appear to have a slapped cheek. The rash then spreads to the trunk, arms, and legs. Despite being called a "disease," fifth disease is actually just a viral illness that most children recover from quickly and without complications.

Fifth disease (also called erythema infectiosum) is caused by parvovirus B19. A human virus, parvovirus B19 is not the same parvovirus that veterinarians may be concerned about in pets, especially dogs, and it cannot be passed from humans to animals or vice versa.

Studies show that although 40% to 60% of adults worldwide have laboratory evidence of a past parvovirus B19 infection, most of these adults can't remember having had symptoms of fifth disease. This leads medical experts to believe that most people with a B19 infection have either very mild symptoms or no symptoms at all.
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