Keep rooms well-ventilated to reduce risk of infection

Studies have shown that viruses thrive better in cool, dry climates, and they do not persist well in hot, humid environments (over 30°C and 80 per cent humidity level).

Singapore’s tropical climate makes it less conducive for the spread of the novel coronavirus — now officially named COVID-19 — but this also means there is extensive use of air-conditioning as a way to escape from the heat.

“Air-conditioning is something that can’t be helped in Singapore, especially during the hot months,” said Associate Professor Hsu Li Yang, Programme Leader (Infectious Diseases).

“But enclosed spaces, where it is less humid and cooler, could help to spread respiratory diseases.”

It is recommended to keep rooms well-ventilated by opening the windows and using fans instead of air-conditioners.

Professor Wang Linfa, director of the Programme in Emerging Infectious Diseases, Duke-NUS Medical School, added that ultra-violet rays and heat from the sun could kill the virus.

“If you can stay under the sun for a while, it would be good. Vitamin D can also boost the immune system,” he said.

Members of the public are still encouraged to disinfect surfaces in their workplaces and homes, maintain good personal hygiene, wash their hands frequently with soap and water, and avoid touching their faces with the unclean hands.

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