To bring it down, health officials are now looking for more international assistance -- critical in Vietnam's implementation of its highly successful immunization program.

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In his former role as health secretary, Flavier put in place a model national immunization program and aggressively championed birth control programs despite opposition from the powerful Catholic Church.

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The president planned to announce that he is calling on the WIC program to check the immunization status of every child receiving services and assistance, and to refer children who are behind on their immunizations to a local doctor or public clinic.

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