Why Guinea-Bissau halted a controversial hepatitis vaccine trial for babies

Guinea-Bissau has reportedly halted a controversial United States-funded hepatitis B virus vaccine (HBV) trial which drew global scrutiny when experts said it involved withholding lifesaving shots from thousands of babies.

The trial failed to gain the necessary government approval, one researcher involved in the project said in a statement, adding that the end of the trial was a “significant set...