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Mass vaccination with live attenuated poliomyelitis virus was reported in the Belgian Congo and Ruanda-Urundi, although the provided abstract contains no specific clinical results.
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No clinical outcomes reported from early mass live polio vaccination; leaves open questions on large-scale efficacy and safety.
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Courtois et al. (1958) studied this question. Mass vaccination with live attenuated poliomyelitis virus was reported in the Belgian Congo and Ruanda-Urundi, although the provided abstract contains no specific clinical results.
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