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Clinical Trial
. 1989 Jan;17(1):85-90.
doi: 10.1016/0092-1157(89)90031-0.

Mumps vaccine L-Zagreb, prepared in chick fibroblasts. I. Production and field trials

Affiliations
Clinical Trial

Mumps vaccine L-Zagreb, prepared in chick fibroblasts. I. Production and field trials

M Beck et al. J Biol Stand. 1989 Jan.

Abstract

Leningrad-L3 Mumps Vaccine virus has been further attenuated by adaptation and passage on SPF chick embryo fibroblast cell cultures. This new mumps strain has been designated L-Zagreb and has been used to prepare mumps vaccines which meet the WHO requirements. Observations during both the field trial period prior to registration and during the later use of the vaccine showed that the few reactions observed were mild and that seroconversion was obtained in 88-98% of vaccines. The morbidity of mumps in Croatia declined more than tenfold after the introduction of the new vaccine. During a mumps epidemic, vaccine efficiency was calculated to be 97-100%.

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