Pregnancy and HIV disease progression during the era of highly active antiretroviral therapy.

Background: Before the availability of highly active antiretroviral therapy (HAART), there was no clear effect of pregnancy on human immunodeficiency virus (HIV) disease progression. This has not been assessed during the HAART era.

Methods: We conducted an observational cohort study among HIV-infected women with >or=1 outpatient clinic visit between January 1997 and December 2004.