Novel vaccine adjuvant could make it easier to eradicate polio

Article excerpt

Researchers have developed a novel vaccine adjuvant that could enhance the injectable polio vaccine's ability to block viral transmission, potentially closing a critical gap in polio eradication efforts. While the U.S. injectable vaccine effectively prevents disease, it allows asymptomatic carriers to spread the virus, a problem the oral vaccine avoids. The adjuvant, which amplifies immune response, could make the injectable form as transmissible as its oral counterpart, offering a safer alternative that maintains efficacy while eliminating live-virus exposure risks. This development matters for global eradication campaigns, where the oral vaccine's transmission-blocking properties have been essential for stopping outbreaks.