Racial and ethnic disparity in male preterm singleton birth.

Objective: To evaluate the association between male sex and increased preterm birth (PTB) by race and ethnicity among singleton fetuses born in the United States.

Study Design: The 2002 National Center for Health Statistics Natality database was analyzed for known risk factors of PTB by fetal sex and race. Multivariable Cox proportional hazards regression was applied to estimate the hazard ratio by fetal sex for births between 20 and 36 completed gestational weeks.

The contribution of maternal race/ethnicity and fetal sex to prematurity in twins.

Objective: The contribution of male fetal sex to twin preterm birth (PTB) rates was evaluated in the United States.

Study Design: The 2002 National Center for Health Statistics Natality database was analyzed for fetal sex and twin gestations based on birth sex for MM and FF pairs (M, male; F, female). Multivariable Cox proportional hazards regression was applied to estimate the hazard ratio for PTB with adjustments for known risks.

Varicella zoster meningitis in a pregnant woman with acquired immunodeficiency syndrome.

Between 6000 and 7000 women in the United States infected with human immunodeficiency virus (HIV) give birth annually. It is well known that HIV-related immunosuppression significantly increases the risk for acquiring opportunistic infections (OIs). However, there is limited information regarding the relationship of pregnancy in the setting of HIV/AIDS infection, subsequent development of OIs, and maternal and fetal outcomes.