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Anti-HIV drug use during pregnancy does not affect infant size, birth weight
Date:5/1/2012

ded 2,000 U.S. infants born to HIV-positive mothers between 2003 and 2010. The researchers collected data for the infants' size relative to their gestational age (time they had spent in the womb), their birth weight, length at birth, and the circumference of their head. The researchers recorded similar measurements when the child was 1 year old.

They found that mothers taking tenofovir in combination with other anti-HIV medications and mothers on anti-HIV drug combinations that did not include tenofovir gave birth to infants who were smaller, on average, than infants born to HIV-negative mothers. However, they did not find significant differences between infants from the two groups of HIV-positive mothers.

The tenofovir-exposed infant's smaller average size and head circumference at one year of age suggests tenofovir could have a delayed effect on growth. Further research on this and other classes of anti-HIV drugs is ongoing in the PHACS.

"Overall, this study produced reassuring information regarding the use of tenofovir," said Dr. Siberry. "Although further research is needed, on balance, our findings favor the use of tenofovir in pregnancy to ensure good outcomes in the mother and prevent transmission of HIV to the infant."


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Contact: Robert Bock or Marianne Glass Miller
bockr@mail.nih.gov
301-496-5133
NIH/National Institute of Child Health and Human Development
Source:Eurekalert

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