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What is B19 usually causes a very mild disease. Two groups of people for whom it can be serious, however, are? and explain in detail?
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