That means the small city-state has the second highest number of cases outside of mainland China, behind Thailand, which has 14 confirmed cases.
The three new cases are all female Chinese nationals from Wuhan who landed in Singapore between January 21 and 22, according to a statement from Singapore's Ministry of Health.
All 13 patients are in a stable condition and “most are improving," the ministry said.
As with many countries around the world, Singapore has advised its citizens to “defer all travel to Hubei province and all non-essential travel to mainland China.”
Singapore's Minister of Trade and Industry Chan Chun Sing said the government will distribute four masks each to 1.3 million households starting from Saturday. He added that the country has “sufficient masks” if they manage the supply appropriately.