As the Carnival celebrations unfold in Brazil, public health experts express concern over the common practice of sharing drinks, straws, and personal items among revelers. This habit, while seemingly innocuous, poses significant health risks, as saliva can transmit a variety of pathogens, including respiratory viruses like COVID-19 and influenza, norovirus (which can cause acute diarrhea and gastroenteritis), as well as infections like mononucleosis and herpes. Experts emphasize the critical need for individuals to refrain from sharing such items to mitigate these risks during the festive season.

The act of kissing and sharing drinks facilitates the exchange of germs that can enter the body through the mouth, leading to the potential spread of not only respiratory illnesses, but also infections caused by bacteria, viruses, and fungi. Moreover, sexually transmitted infections (STIs) can be contracted through intimate contact associated with Carnival celebrations. The implications are especially concerning given the recent global health crises, leading health authorities to actively promote awareness about safe practices during public gatherings.

Herpes simplex virus (HSV-1), responsible for cold sores, is particularly noteworthy, affecting a substantial portion of the population worldwide, with a staggering 90% of Brazilian adults having been in contact with it at some point in their lives. With the increased interaction during Carnival, experts warn that incidences of infections could rise, particularly with gastrointestinal issues that often spike during these festive gatherings. Therefore, health officials are advocating for preventive measures to ensure that the celebratory atmosphere does not come at the expense of public health.