Efficacy Of High-Titer Live Attenuated Varicella Vaccine In Healthy Young Children

The efficacy of a high-titer, reformulated varicella vaccine was studied in 513 10- to 30-monthold children. Vaccinees were randomly allocated to 5 groups to receive one of two lots of an original high-titer vaccine, one of two lots of a partially heat-inactivated vaccine, or placebo. Both vaccines...

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Veröffentlicht in:The Journal of infectious diseases 1996-11, Vol.174 (Supplement-3), p.S330-S334
Hauptverfasser: Varis, Tiina, Vesikari, Timo
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container_end_page S334
container_issue Supplement-3
container_start_page S330
container_title The Journal of infectious diseases
container_volume 174
creator Varis, Tiina
Vesikari, Timo
description The efficacy of a high-titer, reformulated varicella vaccine was studied in 513 10- to 30-monthold children. Vaccinees were randomly allocated to 5 groups to receive one of two lots of an original high-titer vaccine, one of two lots of a partially heat-inactivated vaccine, or placebo. Both vaccines were well tolerated. Seroconversion was detected in 100%and 99% of children immunized with the high- and low-titer vaccines, respectively. Sixty-five cases of serologically confirmed varicella-like disease were discovered during follow-up (mean, 29.3 months): 5 in the high-titer vaccine group, 19 in the low-titer vaccine group, and 41 in the placebo group (P≤?.005 for each difference). Thus, the protective efficacy of live attenuated varicella vaccine is dependent on vaccine titer. High-titer varicella vaccine induces excellent protection in healthy young children.
doi_str_mv 10.1093/infdis/174.Supplement_3.S330
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source MEDLINE; JSTOR Archive Collection A-Z Listing; Oxford University Press Journals All Titles (1996-Current)
subjects Antibodies
Antibodies, Viral - blood
Blood
Chickenpox
Chickenpox vaccine
Chickenpox Vaccine - adverse effects
Chickenpox Vaccine - immunology
Child, Preschool
Children
Double-Blind Method
Female
Herpesvirus 3, Human - immunology
Humans
Immunity
Immunization
Infant
Male
Pediatrics
Placebos
Transcriptional regulatory elements
Vaccination
Vaccines, Attenuated - immunology
title Efficacy Of High-Titer Live Attenuated Varicella Vaccine In Healthy Young Children
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