1.
J Hyg (Lond)
; 72(2): 273-9, 1974 Apr.
Article
in English
| MEDLINE
| ID: mdl-4522721
ABSTRACT
After encouraging results of the mass vaccination programme in Iran, in which 5 million children in rural areas were vaccinated with the Japanese Sugiyama strain at its 82nd passage in baby calf kidney, and a progressive decrease in the incidence of measles as well as a reduction of excessive infant mortality, a further attenuated vaccine, produced with the same strain, cloned in Japan, was compared in a field trial with the parent vaccine. The new strain caused fewer reactions than the original strain. Seroconversion with a geometric mean antibody titre of 6.1 was observed in 95% of susceptible children.