Review of: "Carriage of oropharyngeal bacteria among children in a vulnerable rural population living in a tropical region in São Paulo, Brazil"

Potential competing interests: No potential competing interests to declare. General commentThe present study is entitled "Carriage of oropharyngeal bacteria among children in a vulnerable rural population living in a tropical region in São Paulo, Brazil".The study had as its primary objective to determine the prevalence of Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis in the oropharynx among children of a vulnerable population living in a tropical rural settlement in São Paulo, Brazil.The study had as a secondary objective to identify the risk factors of Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis associated with airway infections.Overall, the findings from this study are of public health significance.This is an indication that the proper implementation and use of vaccines as an intervention can significantly reduce the burden of diseases locally and globally. Minor comments1.The manuscript is well written and easy to understand.