Antibody response to influenza vaccination in nursing home residents and healthcare workers during four successive seasons in Niigata, Japan.
Sato M, Saito R, Tanabe N, Nishikawa M, Sasaki A, Gejyo F, Suzuki H. Antibody response to influenza vaccination in nursing home residents and healthcare workers during four successive seasons in Niigata, Japan. Infect Control Hosp Epidemiol. 2005 Nov; 26(11):859-66.