Health news · 6 November 2026
Guinea-Bissau Cancels US-Funded Hepatitis B Vaccine Trial After Ethics Outcry and Police Raid
Guinea-Bissau has halted a controversial $1.6 million US-funded hepatitis B vaccine trial involving roughly 14,000 infants after the WHO and other experts condemned the study as unethical and police raided the research facility and seized vaccine batches in October.
AHA 2026: Major Heart Trials in Chicago — Lp(a), Obesity Drugs and AI in Focus
The American Heart Association's Scientific Sessions 2026 is under way at McCormick Place in Chicago from 6–9 November, with 23 late-breaking trial presentations scheduled across six sessions from 7–9 November, covering new cholesterol-lowering drugs, obesity cardiovascular outcomes, heart-valve surgery and AI diagnostics.
Scientists Develop Gel That Regrows Tooth Enamel Using Saliva's Own Minerals
Researchers at the University of Nottingham have created a protein-inspired gel that regenerates damaged tooth enamel by drawing calcium and phosphate from saliva, with a commercial product targeted within a year.
WHO: Six Climate-Health Actions Could Save 1.6 Million Lives and Generate $9.3 Trillion in Benefits Each Year
A new WHO report released ahead of COP31 identifies six proven interventions — from heat-warning systems to fossil-fuel pricing reform — that together could prevent 1.6 million deaths annually and avoid 16.7 billion tonnes of CO₂ emissions.