Việt Nam: Từ tháng 5 sẽ sử dụng vắc xin 
bại liệt mới
Thông tin từ Chương trình tiêm chủng mở rộng quốc gia cho biết từ tháng 5/2016, chương trình tiêm chủng chuyển sang sử dụng văcxin bại liệt nhị giá phòng bệnh cho trẻ em.
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