TEMPORADA: 15
EPISODIO: 11 - Can You Still Get Polio?
SINOPSIS
Most cases of polio in this country are caused by the vaccine designed to prevent it. NOVA examines the controvery surrounding the nation's vaccine policy.
TEMPORADA: 15
EPISODIO: 11 - Can You Still Get Polio?
Most cases of polio in this country are caused by the vaccine designed to prevent it. NOVA examines the controvery surrounding the nation's vaccine policy.
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