Diary of a rail fan in Kansai,Japan(Ver.2)

About world's rail news, general news, my train pictures, and travel diary)

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askST: Are handrails in MRT trains sanitised and does the air-conditioning system spread germs?

http://www.straitstimes.com/singapore/transport/askst-are-handrails-in-mrt-trains-sanitised-and-does-the-air-conditioning-system

I'm surprised at the fact that the handrails in MRT stations are sanitized at least every one hour.
I think that handrails in Japan's train stations are cleaned at most everyday.
Is it because Singapore has climate(high humidity and temperature) as to breed germs?