Parvovirus B19, discovered in 1974, primarily affects erythroid progenitor cells, causing conditions like erythema infectiosum and serious complications in susceptible populations, such as pregnant individuals.
Healthcare providers are alerted to the rise in parvovirus B19 cases, noting the heightened risk for pregnant individuals facing up to 10% chance of fetal anemia or miscarriage if infected.
The virus spreads via respiratory droplets, posing a risk for daycare staff and teachers. About 50% of adults have developed immunity by age 20, growing to 70% by age 40.
Symptoms often manifest in a two-phase sequence, starting with flu-like features and progressing to a distinctive red rash. Most cases resolve with supportive care.
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