Each year thousands of babies born in Guinea-Bissau, one of the world’s least developed countries, are exposed to hepatitis B, a virus that can cause severe liver damage and cancer.
2026-01-22 1334词 晦涩
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The study, which was to be carried out by Danish researchers, swiftly became the subject of furor in the public health world, with researchers in Africa and the United States saying that it violated key tenets of ethical science. A Trump administration health official said the study had been paused.
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