Children and adolescents (aged 6 months--18 years) on receiving long-term aspirin therapy
Women who will be pregnant during the influenza season
Adults and children with chronic pulmonary or cardiovascular disease
Adults and children who have required regular medical follow-up or hospitalization during the preceding year because of chronic metabolic diseases (including diabetes mellitus), renal dysfunction, etc.
Adults and children who have any condition that can compromise respiratory function or the handling of respiratory secretions
Residents of nursing homes and other chronic-care facilities
OR cohort suspected influenza residents with other residents suspected of having influenza; cohort confirmed influenza residents with other residents confirmed to have influenza.
Wear a surgical or procedure mask upon entering the resident’s room or when working within 3 feet of the resident. Remove the mask when leaving the resident’s room and dispose of the mask in a waste container.
If resident movement or transport is necessary, have the resident wear a surgical or procedure mask .