The University of Vermont Vaccine Testing Center, Larner College of Medicine, University of Vermont, Burlington, Vermont, USA.
International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
J Infect Dis. 2021 Oct 13;224(7):1147-1151. doi: 10.1093/infdis/jiaa101.
Secretor status controls mucosal histo-blood group antigen expression and is associated with susceptibility to rotavirus (RV) diarrhea, with nonsecretors less susceptible to symptomatic infection. The role of breast milk secretor status on oral live-attenuated RV vaccine response in breastfed infants has not been explored. In a monovalent G1P[8] RV vaccine (Rotarix) trial in Bangladesh, RV-specific plasma immunoglobulin A antibody seroconversion rates were higher among infants of maternal nonsecretors (39%) than infants of maternal secretors (23%; P = .001). Maternal status remained a significant predictor when correcting for infant status (P = .002). Maternal secretor status should be considered when interpreting oral RV vaccine responses in low- and middle-income settings. Clinical Trials Registration. NCT01375647.
分泌状态控制黏膜组织血型抗原的表达,并与轮状病毒(RV)腹泻的易感性相关,非分泌者症状感染的易感性较低。母乳分泌状态对母乳喂养婴儿口服减毒 RV 疫苗反应的影响尚未得到探索。在孟加拉国进行的单价 G1P[8]RV 疫苗(Rotarix)试验中,母亲为非分泌者的婴儿(39%)RV 特异性血浆免疫球蛋白 A 抗体血清转化率高于母亲为分泌者的婴儿(23%;P =.001)。当校正婴儿状态时,母亲状态仍然是一个显著的预测因素(P =.002)。在解释低收入和中等收入国家口服 RV 疫苗反应时,应考虑母体分泌状态。临床试验注册。NCT01375647。