The importance of hepatitis A (HA) for epidemiological situations among the servicemen of the Armed Forces of the Russian Federation, including the Far Eastern Military District, and the necessity of vaccinal prophylaxis have been substantiated. Vaccination against HA, made in a single injection, was shown to be capable of decreasing morbidity, on the average, 1.98 times. The epidemiological effectiveness of vaccine "Avaxim" proved to be 89.6%. The results obtained in this investigation are indicative of the expediency of vaccination not only for prophylactic purposes, but also for localization and liquidation of epidemic foci of HA.
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