Antibodies that prevent HIV infection represent one of the most promising frontiers in the fight against the virus. By providing ready-made immune protection, they could offer an alternative to daily medication for people at high risk. But HIV is a master of evasion, and new research shows that it can find escape routes even when a powerful preventive antibody stands in its way.
Scientists have traced how the virus mutates and slips past the defences of a widely studied antibody, a finding that underscores just how resourceful this pathogen remains. The same work, however, points toward a solution. Newer antibodies, designed to recognise the virus at multiple vulnerable points at once, appear capable of closing the very gaps that the older defence left open. By combining or engineering antibodies to target several sites simultaneously, researchers hope to make escape far more difficult. The battle between HIV and the immune system is a relentless arms race, and each new insight into the virus's tactics helps scientists design weapons that are harder to outwit.
