Annual influenza vaccination: immune response in patients over 10 years.

Objective: To determine the effect of repeated annual influenza immunization on the host's serum antibody.

Design: Ten year observational study with cohort design.

Setting: Cystic Fibrosis Center at St.

Chlamydia pneumoniae infection in patients with cystic fibrosis.

The prevalence of atypical community-acquired infections as acute pulmonary exacerbations in patients with cystic fibrosis was prospectively studied. Thirty-two patients admitted to the hospital because of acute pulmonary exacerbations and 24 clinically stable patients seen for their routine visits were examined. The prevalence of infection with Chlamydia pneumoniae was assessed by culture and serology, and the presence of IgE to C.

Association of influenza immunization with reduction in mortality in an elderly population. A prospective study.

We prospectively studied the efficacy of influenza vaccine during an influenza A/Arizona/80 (H3N2) outbreak at the Jewish Home and Hospital for the Aged in New York in the winter season of 1982 to 1983. All patients had been offered influenza vaccine before the outbreak; 181 chose to be vaccinated and 124 refused vaccination but agreed to participate in the study. Among those with serologic evidence of influenza infection, respiratory illness was significantly more common in the unvaccinated group (six of 14 vs one of 22).

Epidemiology of acute respiratory illness during an influenza outbreak in a nursing home. A prospective study.

We observed an influenza epidemic caused by influenza A/Arizona/82 (H3N2) in a nursing home during 1982 to 1983. A survey indicated that 59% of the residents were immunized before the outbreak. The outbreak was observed to begin in November, peak in February, and disappear in April.

Immunization of elderly people with high doses of influenza vaccine.

Healthy ambulatory elderly were immunized with increasing doses of the 1984-1985 influenza vaccine formulation. Two types of vaccines, split-product vaccine (SPV) and whole virus vaccine (WVV), were used. Three different doses, 0.