Effectiveness of influenza vaccination in a long-term care setting.
D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control; D008134:Long-Term Care; D008297:Male; D009735:Nursing Homes
D007252:Influenza Vaccines