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Virus Research, 1999
Since the poliomyelitis eradication program began in 1988, the number of poliovirus infected continents and countries have decreased from five to two and from greater than 100 to 53, respectively. A nearly 90% reduction in the incidence of polio has been achieved with a corresponding decrease in virus genomic heterogeneity.
W R, Dowdle +4 more
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Since the poliomyelitis eradication program began in 1988, the number of poliovirus infected continents and countries have decreased from five to two and from greater than 100 to 53, respectively. A nearly 90% reduction in the incidence of polio has been achieved with a corresponding decrease in virus genomic heterogeneity.
W R, Dowdle +4 more
openaire +2 more sources
American Journal of Obstetrics and Gynecology, 1956
G B, ELLIOTT, J E, MCALLISTER
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G B, ELLIOTT, J E, MCALLISTER
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