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Comparative trial of live measles vaccines in Czechoslovakia.

The study reported in this article was conducted under the auspices of WHO as part of the Organization's programme on measles vaccination.In the spring of 1964, 416 children aged between 8 months and 3 years were inoculated with one or another of the following agents: Enders Edmonston B vaccine (alone or with gamma-globulin), Schwarz vaccine, Beckenham 20 vaccine, Milovanović vaccine, and a placebo.Seroconversion rates ranged from 91% to 100%, which indicates that the vaccines tested were highly immunogenic. The incidence of reactions was low, and from the clinical point of view acceptable. Cl…