2024 Yes https://doi.org/10.1016/j.ram.2024.07.001 Gomes, Karina A. South America Observational Epidemiology Study Students Staff Viruses Infections Norovirus Outbreak Acute gastroenteritis This study described two norovirus outbreaks at a Buenos Aires nursery school in 2018 and 2020, identifying GII.4 [P16] and GI.3 [P13] strains. Spread via food, surfaces, and contact highlights the need for stronger surveillance and hygiene in childcare.