B19 usually causes a very mild disease. Two groups of people for whom it can be serious, however, are?
Primary infection in pregnant women is very serious and can result in death of the fetus. In patients with sickle-cell disease, the virus can initiate a transient aplastic crisis. Reference: Ananthanarayan and Paniker&;s Textbook of Microbiology Tenth edition
teenagers and pregnant women
pregnant women and sickle-cell anemics
the sexually promiscuous and drug addicts
alcoholics and asplenics
Virology