Brazil promotes cocoon vaccination to shield newborns amid RSV surge

Health officials in Brazil are urging families to adopt a “cocoon” or cocooning strategy that expands protection for newborns by vaccinating all close contacts – parents, siblings, grandparents, caregivers and other household members. Pediatrician Dr. Heitor Pesca Barbieri explains that immunizing these individuals creates a safety barrier that reduces the circulation of dangerous pathogens such as the respiratory syncytial virus (RSV), which has driven a recent increase in severe acute respiratory syndrome (SRAG) cases across the country.

The recommended vaccines include pertussis (dTpa), diphtheria‑tetanus (dT or dTpa), seasonal influenza, RSV for high‑risk groups such as pregnant women and the elderly, and COVID‑19. By keeping the surrounding adults up‑to‑date, the strategy aims to lower the risk of bronchiolitis and other serious respiratory illnesses in the most vulnerable infants.

Data from Fiocruz’s InfoGripe bulletin released the first week of June showed a national rise in SRAG hospitalisations, primarily due to RSV, with contributions from influenza A and rhinovirus in several regions. Health professionals stress that widespread vaccination of caregivers can help curb this trend and protect newborn health.