1BCD)
1BCD). while lower but comparable median IgA and neutralizing titers were detected in breast milk from Korean and Vietnamese women, and the lowest titers were seen in American women. Neutralizing activity was greatest against the 2 2 vaccine strains of human origin, RV1 and 116E. This neutralizing activity in one half of the breast milk specimens from Indian women could reduce the effective titer of RV1 by ~2 logs, of 116E by 1.5 logs, and RV5 G1 strain by ~1 log more than that of breast milk from American women. Interpretation The lower immunogenicity and efficacy of rotavirus vaccines in poor developing countries could be explained, in part, by higher IPI-145 (Duvelisib, INK1197) titers of IgA and neutralizing activity in breast milk consumed by their infants at the time of…