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Medications
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Adult Fifth Disease
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Fifth disease is a mild illness that occurs most commonly in children. It is caused by parvovirus B19. About 50 percent of adults have already had fifth disease as children or adolescents, and therefore are immune to the parvovirus. If an adult is not immune, he or she can become infected with fifth disease.
Other names for fifth disease include:
The virus that causes fifth disease has been found in the respiratory secretions (e.g., saliva, sputum, or nasal mucus) of infected people before the onset of the rash, when they appear to still "just have a cold." Fifth disease transmission probably occurs from person to person, by direct contact with those secretions, such as sharing drinking cups or utensils.
Fifth disease infections can occur year-round, but they are more common during winter and spring months. In a household, as many as 50 percent of susceptible people -- those who are exposed to a family member who has fifth disease -- may become infected.
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