CLINICAL STUDIES OF MONO-VALENT INACTIVATED WHOLE VIRUS AND SUBUNIT A-USSR-77 (H1N1) VACCINE - SEROLOGICAL RESPONSES AND CLINICAL REACTIONS
CLINICAL STUDIES OF MONO-VALENT INACTIVATED WHOLE VIRUS AND SUBUNIT A-USSR-77 (H1N1) VACCINE - SEROLOGICAL RESPONSES AND CLINICAL REACTIONS
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DOI:
10.1016/s0092-1157(79)80044-x
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发表时间:
1979-01-01
期刊:
影响因子:
--
通讯作者:
ANDERSON, SG
中科院分区:
文献类型:
--
作者:
NICHOLSON, KG;TYRRELL, DAJ;ANDERSON, SG
The clinical acceptability and antibody [Ab] responses to graded doses of whole virus, aqueous surface antigen [Ag] and adsorbed surface Ag of influenza A/USSR/92/77 (H1N1) virus vaccines were assessed in 1335 healthy [human] volunteers in a double-blind, multi-center study conducted in the UK in Feb. and March, 1978. Before vaccination the presence of hemagglutination-inhibiting (HI) and neuraminidase-inhibiting (NI) serum Ab to the vaccine virus was infrequent and in low titers in volunteers aged .ltoreq. 25 yr but was more frequent in older persons. In volunteers aged .ltoreq. 25 yr who were sero-negative for HI Ab before vaccination, the HI Ab responses following 1 dose of vaccine were generally of low frequency and titer for all doses and types of vaccine. Whole virus or subunit vaccines with high antigenic content (.gtoreq. 47 .mu.g hemagglutinin (HA)/dose) induced HI Ab responses in at least 60% of recipients. Following 2 doses of whole virus, aqueous or adsorbed surface Ag vaccine containing at least 9 .mu.g HA per dose, serum HI titers of .gtoreq. 40 were detected in 69-100% of recipients. In volunteers aged .gtoreq. 26 yr who received a single dose of any of the test vaccines containing at least 3 .mu.g HA, the HI Ab responses were frequent and post-vaccine titers of .gtoreq. 40 were detected in 80% of vaccinees. A ''shallow'' dose response effect over a wide range of Ab concentrations of whole virus (5-94 .mu.g HA/dose) or subunit vaccines was noted for each age group. The geometric mean HI Ab titers and proportion of vaccinees developing HI titers .gtoreq. 40 were similar for each age group when comparable doses of vaccine were given by the s.c. and intradermal routes. A preliminary study of the NI Ab responses to vaccination indicated that all the whole virus and subunit vaccines stimulated serum NI Ab in a proportion of recipients. All vaccines were clinically well tolerated.