[Comment] Thunderstorm asthma in China: an emerging clinical and public health concern

Thunderstorm asthma represents one of the most striking intersections between meteorology, aerobiology, and respiratory health. The catastrophic epidemic in Melbourne, VIC, Australia, in 2016, which caused thousands of emergency visits and multiple deaths, showed how thunderstorms can transform common environmental allergens into triggers of sudden, large-scale morbidity.1 For decades, China reported virtually no such events. However, in the past 3 years, well documented outbreaks across different regions have signalled a shift: thunderstorm asthma in China, though still uncommon, is now occurring with increasing frequency.