Proposed CDC-funded hep B trial in Africa unethical, WHO chief says

The director-general of the World Health Organization, Tedros Adhanom Ghebreyesus, expressed strong criticism on Wednesday regarding a planned U.S.-funded study of the hepatitis B vaccine in Guinea-Bissau. He stated during a WHO news conference that proceeding with the study would be deemed unethical from WHO’s standpoint. Despite this stance, a spokesperson for the Department of Health and Human Services defended the proposed trial, emphasizing that it aims to address existing evidence gaps to inform global hepatitis B vaccine policy while upholding the highest scientific and ethical standards.

The study, partially funded by the Centers for Disease Control and Prevention, intends to investigate the potential impacts of administering a birth dose of the hepatitis B vaccine on infants’ health. This vaccine has been a standard practice for over 40 years, supported by numerous studies attesting to its safety and efficacy. However, a recent recommendation by a CDC advisory panel suggested a shift in policy to offer the birth dose only to infants born to specific risk groups, rather than all newborns.

The World Health Organization strongly advocates for providing hepatitis B vaccine to newborns to prevent long-term health issues. Kate O’Brien, director of the WHO’s immunization program, highlighted the vaccine’s effectiveness in preventing liver cancer and other complications. Despite WHO’s recommendations, Guinea-Bissau does not currently administer a birth dose but had planned to implement this policy in 2027, later postponed to 2028.

A team of Danish researchers aimed to conduct a randomized controlled trial involving 14,500 infants in Guinea-Bissau to compare the effects of receiving the birth dose versus the standard 2-month vaccination. However, concerns were raised about the study’s focus on potential harms rather than benefits of early vaccination. The study lacked a structured approach to assess hepatitis B rates and vaccine benefits, raising ethical issues about denying half the children a proven intervention.

Tedros emphasized the unethical nature of conducting the study in a high-prevalence area without providing the established standard of care. While the status of the study remains uncertain following objections from Guinea-Bissau’s new government, the trial has not commenced as no listing is found on clinicaltrials.gov, the official platform for registering clinical trial protocols.

In conclusion, the controversy surrounding the U.S.-funded study in Guinea-Bissau underscores the importance of upholding ethical standards in research and ensuring that interventions are based on established evidence to safeguard public health. The world of technology is constantly evolving, and one of the most exciting developments in recent years has been the rise of virtual reality (VR) technology. VR allows users to immerse themselves in a completely digital environment, experiencing sights and sounds in a way that feels incredibly real.

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