H5N1 Bird Flu: One Mutation from Human Transmission

A study by Scripps Research reveals that a single mutation in the H5N1 bird flu virus could increase its ability to infect humans by altering its receptor binding preference. This mutation, found in viruses from cows in the U.S., raises concerns about the virus's zoonotic potential, especially after a similar mutation was observed in a Canadian teenager who contracted H5N1. While additional mutations are likely needed for efficient human transmission, the findings highlight the importance of monitoring and controlling the virus to prevent a potential pandemic.