• The rooms of three coronavirus patients were tested in a Singapore hospital   
  • The room of a ‘mild’ infectee had trace amounts of the virus in an air vent
  • Concerns have been raised in recent weeks of the spread of the deadly coronavirus through air-conditioning units after many became ill on cruise ships

Traces of the coronavirus found in a hospital air duct has led scientists to believe the disease could be spread through air-conditioning units, making it more contagious than initially thought.

Swab analysis of rooms used by three coronavirus patients by experts at the National Centre for Infectious Diseases in Singapore suggest that the respiratory illness spreads easier than previously thought.

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