IN THE LATE spring and summer of 1962, an intensive program for distribution of Sabin oral poliovaccine was carried out in the Cleveland area. This program was modeled after the "Sabin-on-Sunday" (SOS) method of community immunization developed in Phoenix and Tucson, Arizona.1 As the campaign progressed, it appeared that community-wide participation had been achieved as evidenced by the crowds of people who came to distribution centers in all socioeconomic areas. Efforts to achieve this goal of community-wide immunization have been stimulated by the occurrence in recent years of severe poliomyelitis epidemics with concentration of high attack rates in the lower socioeconomic areas of cities 2S and the concurrent observation of generally low levels of inactivated poliovaccine immunization levels in the areas with highest rates.5-8 Although much work has been expended in campaigns to reduce this problem, results frequently have been less successful in reaching the target populations than was
Lepow ML, Serfling RE, Sherman IL, Robbins FC. A Survey of Immunization Levels After an Oral Poliovaccine Program in Cleveland. JAMA. 1964;187(10):749–757. doi:10.1001/jama.1964.03060230077020
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