non-immune hydrops (which can stress the heart), or fetal loss. The risk is highest if a pregnant woman gets parvovirus between weeks 9–20. Springfield, Ill., teacher Abby Parks was 18 weeks ...

try not to worry – it's highly unlikely that a parvovirus-related problem will develop later. If, however, the testing shows evidence of anemia or fetal hydrops, the next step may be an invasive ...