World

Weekly Epidemiological Record (WER), 7 May 2021, Vol. 96, No. 18 (pp.145-156) [EN/FR]

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145 Surveillance to track progress towards polio eradication – worldwide, 2019–2020

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145 Surveillance de la poliomyélite: suivi des progrès accomplis vers l’éradication de la maladie à l’échelle mondiale, 2019-2020