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Chest, Vol 100, 977-984, Copyright © 1991 by American College of Chest Physicians

ARTICLES

Superiority of live attenuated compared with inactivated influenza A virus vaccines in older, chronically ill adults

GJ Gorse, RB Belshe and NJ Munn
Department of Internal Medicine, St. Louis Veterans Affairs Medical Center, MO.

Forty-eight older adults with chronic diseases were vaccinated intranasally with live attenuated influenza A/Korea/1/82 (H3N2), CR59 virus. Forty-two (88 percent) CR59 virus recipients became infected with vaccine virus without adverse effects or change in mean pulmonary function even among the 29 infected recipients with moderate to severe chronic obstructive pulmonary disease. Among control groups who received either monovalent or trivalent inactivated influenza virus vaccines intramuscularly, the rates of fourfold rises in serum antibody titer to hemagglutinin (HA) were not different from the rate following CR59 virus inoculation. However, CR59 virus was superior to inactivated virus vaccine at stimulating secretory antibody to HA. Vaccinees age 65 years and older were more likely to shed CR59 virus in nasal secretions than were younger vaccinees, but antibody responses were not different. CR59 virus vaccine was safe and immunogenic in this population and more often induced a nasal wash IgA antibody response than the inactivated virus vaccines.




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Copyright © 1991 by the American College of Chest Physicians.