Acute Haemophilus influenzae chorioamnionitis associated with intact amniotic membranes.

While Haemophilus influenzae infection commonly occurs in the age group 6 to 48 months, it uncommonly affects adults. A case of acute chorioamnionitis due to Haemophilus influenzae in the presence of intact fetal membranes is presented. The low incidence of maternal urogenital carriage, the high attack rate, and the virulence are discussed.