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flag The WHO condemned a U.S.-funded hepatitis B vaccine trial in Guinea-Bissau as unethical and halted it due to unnecessary risk.

flag The World Health Organization has condemned a U.S.-funded hepatitis B vaccine trial in Guinea-Bissau as unethical, citing that the proven birth dose vaccine is already effective in preventing mother-to-child transmission and used in over 115 countries. flag The WHO stated placebo-controlled trials are unjustified when a safe, effective intervention exists, warning the study could expose infants to unnecessary risk. flag The trial, linked to U.S. Health Secretary Robert F. Kennedy Jr.’s vaccine policy shifts, has been suspended by Guinea-Bissau pending review. flag The WHO reaffirmed its support for the country’s planned 2028 vaccine rollout and urged adherence to global research ethics.

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