TOPICS: Parvovirus B19, DNA virus, smallest DNA virus, linear, single stranded, naked, respiratory droplets, RBC precursors, red blood cell, bone marrow, fifth disease, erythematous rash, on cheeks, slapped-cheek, lacy rash, reticular rash, trunk, extremities, aplastic crisis, sickle cell, myocarditis, Behcet syndrome, arthralgias, arthritis, children, adults, TORCHES, pregnant women, hydrops fetalis