Introduction: IntroductionClimate change represents a problem in the health and well-being of human beings, it is established that the effects of climate change on health "threaten to undermine the advances made in public health", this is attributed to waterborne diseases, Since high temperatures can alter the survival, replication and virulence of pathogens, heavy rains can mobilize pathogens and compromise the water and sanitation infrastructure, resulting in acute diarrhea. Objective: Determine the causal agent of diarrhea in the child population during winter periods, by reviewing updated scientific articles that allow us to choose the best treatment for this type of patient. Methodology: Descriptive-narrative bibliographic review study; based on the analysis and interpretation of high-impact scientific articles such as: PubMed, The lancet, Elsevier, Google Scholar. Conclusion: Rotavirus is the most frequent causative agent of diarrhea in children during the winter season.