Hong Kong pollution spikes, elderly urged to stay indoors

Hong Kong faces severe air pollution with elevated ozone levels. Experts warn elderly and vulnerable groups to stay indoors until sunset. Conditions are expected to persist for several days.

https://www.scmp.com/news/hong-kong/health-environment/article/3371819/hong-kong-elderly-urged-stay-indoors-air-pollution-spikes-serious-levels

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