Upper respiratory tract infection (URTI) in toddlers in Indonesia is still high, based on Riskesdas 2018 showed that there were 93,620 cases of ARI in toddlers. Infants and toddlers aged 0-24 months are very vulnerable to various infectious diseases. The bioactive component of sIgA in breast milk can protect infants against respiratory tract infections. Therefore, it is necessary to conduct fur…