Aplastic anemia induced by human parvovirus B19 infection in an immunocompetent adult male without prior hematological disorders: A case report

•Erythema infectiosum, often known as the fifth disease is the most common manifestation in children, whereas, in healthy adults, most cases of infection are asymptomatic or associated with arthritis and myalgia.•The virus causes infections worldwide that vary in severity depending on the age as well as the immunologic and hematologic status of the host.•Parvovirus infection should be considered as one of the causes of sudden and severe aplastic anemia even in previously hematologically normal individuals with intact immunity.•Patients should be treated symptomatically until their hematopoiesis restores, and regular follow-up is critical for detecting chronic anemia or recurrence and treating it promptly.