Health authorities worldwide are intensifying monitoring efforts as a new influenza strain, H3N2 subclade K, gains momentum during the 2025 flu season. First detected in summer this year, the variant has already caused outbreaks in Canada, Japan, and the UK, with experts warning of potential spread to the U.S. and Asian nations.
Dr. Haruto Yamamoto, a Tokyo-based epidemiologist, told KhabarAsia: "This subclade shows increased transmissibility compared to previous H3N2 variants. While current vaccines provide partial protection, we're advising high-risk groups to prioritize booster shots."
Asian countries have activated enhanced surveillance systems, particularly at international travel hubs. Japan's health ministry reported a 40% increase in flu-related hospitalizations this month compared to November 2024, though officials stress these remain within seasonal expectations.
Business leaders are watching potential supply chain impacts, particularly in electronics and automotive sectors where Japanese and South Korean manufacturers maintain global production networks. The World Health Organization is scheduled to host an emergency vaccine formulation meeting next week in Geneva.
