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RT @awakenindiamov: West Germany discontinued pertussis vaccine in 1974. https://t.co/JxM2PIjPqj
RT @awakenindiamov: West Germany discontinued pertussis vaccine in 1974. https://t.co/JxM2PIjPqj
RT @awakenindiamov: West Germany discontinued pertussis vaccine in 1974. https://t.co/JxM2PIjPqj
RT @awakenindiamov: West Germany discontinued pertussis vaccine in 1974. https://t.co/JxM2PIjPqj