title: Non-immunized nurses spark deadly flu outbreak: importance of HCW vaccination emphasized.
mesh_terms: D002140:California; D004196:Disease Outbreaks; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data*; D017757:Infectious Disease Transmission, Professional-to-Patient; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology*; D009735:Nursing Homes; D009740:Nursing Staff
chemical_list: D007252:Influenza Vaccines