PMID: 19141849Jan 15, 2009Paper

Human immunodeficiency virus co-infection increases placental parasite density and transplacental malaria transmission in Western Kenya.

The American Journal of Tropical Medicine and Hygiene
Steven D PerraultKevin C Kain

Abstract

Plasmodium falciparum malaria and human immunodeficiency virus (HIV)-1 adversely interact in the context of pregnancy, however little is known regarding the influence of co-infection on the risk of congenital malaria. We aimed to determine the prevalence of placental and congenital malaria and impact of HIV co-infection on trans-placental malaria transmission in 157 parturient women and their infants by microscopy and by quantitative real-time polymerase chain reaction (PCR) in western Kenya. The prevalence of placental and cord blood infections were 17.2% and 0% by microscopy, and 33.1% and 10.8% by PCR. HIV co-infection was associated with a significant increase in placental parasite density (P < 0.05). Cord blood malaria prevalence was increased in co-infected women (odds ratio [OR] = 5.42; 95% confidence interval [CI] = 1.90-15.47) and correlated with placental parasite density (OR = 2.57; 95% CI = 1.80-3.67). A 1-log increase in placental monocyte count was associated with increased risk of congenital infection (P = 0.001) (OR = 48.15; 95% CI = 4.59-505.50). The HIV co-infected women have a significantly increased burden of placental malaria that increases the risk of congenital infection.

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