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A, Intestinal fatty acid binding protein (iFABP) levels at entry and after vaccination, by human immunodeficiency virus type 1 (HIV) status. B, iFABP levels at entry, by HIV-1 and breastfeeding status. C, Zonulin levels at entry and after vaccination, by HIV-1 status. D, Zonulin levels at entry, by HIV-1 and breastfeeding status. Data are for HIV-1–infected infants (HIV-positive group) and uninfected infants exposed to HIV-1 (HEU group).
