During the Carnival period in Brazil, the incidence of viral infections can increase by 30% to 40%, particularly due to the gastroenteritis and gastroenterocolitis caused by various pathogens. According to Gustavo Patury, a gastroenterologist from Hospital Vila Nova Star, the crowded festivities introduce a multitude of potential contamination sources, from viruses to bacteria, creating a perfect storm for illness among party-goers.

The conditions during Carnival, with large gatherings, inadequate hand hygiene after using chemical toilets, and improperly handled street food create an environment conducive to the spread of germs. Fewer facilities to properly wash hands, combined with the tendency to share food and drinks, further exacerbate the situation. Patury emphasizes the importance of thorough cleaning, advising that gel alcohol alone is insufficient when visible dirt is present, thus recommending access to water and soap where feasible.

The article warns revelers to be cautious about hygiene and food safety during the festivities to avoid falling ill. With many enjoying shared drinks and foods in crowded areas, raising awareness about these health risks is crucial for a safe Carnival experience. Overall, the advice highlights that while enjoying the public festivities, prioritizing personal health practices can help in mitigating the spread of these infections among the large gatherings prevalent during the Carnival season.