Objective: To examine the effect of HIV status on infants' mental and psychomotor functioning, controlling for confounding factors such as prenatal drug exposure and birth conditions.
Methods: Twenty HIV-infected and 25 seroreverted infants (ages 3-30 months old) were administered the Bayley Scales of Infant Development (BSID) and a neurological examination at two time points, 4 to 12 months apart. The majority were from ethnic minority, socioeconomically disadvantaged families; 67% of the infants were prenatally drug-exposed.
Results: HIV-infected infants had significantly lower scores on the BSID at baseline (mental development) and follow-up (motor development) compared to seroreverters. When HIV and neurological deficits were considered together, HIV+ children with neurological deficits scored significantly lower than HIV+ children without neurological deficits and seroreverters, with and without neurological diagnoses. Prenatal drug exposure was not associated with performance on the BSID.
Conclusions: These data suggest that CNS involvement is a critical pathway by which HIV affects infants' neurodevelopment.