What is the incubation period of parvovirus B19 (B19V) infection?

Updated: Oct 11, 2019
  • Author: David J Cennimo, MD, FAAP, FACP, AAHIVS; Chief Editor: Russell W Steele, MD  more...
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Answer

The incubation period from infection to initial, nonspecific symptoms ranges from 4-14 days; but cases have been reported as long as 21 days after exposure. The rash and joint symptoms usually occur 2-3 weeks after initial infection. Patients are most contagious in the few days preceding rash. Patients with aplastic anemia are considered contagious before the onset of symptoms and for at least 1 week. [5, 9, 8, 11]


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