2024 Yes https://www.cdc.gov/mmwr/volumes/73/wr/pdfs/mm7332a1-H.pdf Weinberg, Meghan M. North America Observational Epidemiology Study Students Staff Other Elementary (K-5) Bacteria Infections A May 2023 outbreak of invasive nontypeable Haemophilus influenzae at a Detroit elementary school involved four kindergarteners and one death. Public health teams led contact tracing and prophylaxis, underscoring the need for rapid outbreak response.