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[Clinico-immunologic evaluation of a trivalent vaccine against measles, rubella and mumps].

Prevention of measles, mumps and rubella can be obtained by a single administration of a trivalent vaccine as it has already been practiced in the U.S.A. since 1970 in the Scandinavian Countries since 1982. The immunological response and the clinical reactions to a new trivalent vaccine (Triviraten-Berna) against measles, mumps, and rubella has been studied in a control group including 41 children (20 females and 21 males) aged from a minimum of 16 months to a maximum of 7 years and 4 months. All the children who resulted not to be immune to the 3 viruses by serologic tests showed a rise in the antibody titer with 100% seroconversion, whereas in those resulting to be already immune to one of the 3 viruses, a persistent antibody titer or an increase was revealed. Neither general nor local clinical reactions were observed. These results suggest that this trivalent vaccine is highly effective, without negative effects and helpful for a mass prevention of such viral diseases.