Controversial US study on hepatitis B vaccines in Africa is cancelled

$1.6m project drew outrage over ethical questions about withholding vaccines proven to prevent disease

The controversial US-funded study on hepatitis B vaccines among newborns in Guinea-Bissau has been halted, according to Yap Boum, a senior official at the Africa Centres for Disease Control and Prevention (CDC).

The study has been cancelled," Boum told journalists at a press conference on Thursday morning.