A Dutch man was quarantined at the Preah Sihanouk provincial referral hospital this week after arriving on a cruise ship with a high fever.
Prime Minister Hun Sen said on Tuesday that a blood sample had been sent to the Pasteur Institute in Phnom Penh to test for coronavirus.
On Wednesday, Health Ministry spokesman Ly Sovann said the tests came back negative, according to the Khmer Times.
The only confirmed case in Cambodia remains Chinese national Jia Jianhua, 60, who tested positive for coronavirus after flying in from Wuhan, the epicenter of the outbreak, in January.
Jia was released from hospital in Preah Sihanouk on Monday and was due to return to China on Tuesday, Hun Sen said.
A Health Ministry statement said Jia had tested negative for coronavirus on Feb. 6, Sunday and Monday before being released.
The World Health Organization said on Tuesday that there were 43,103 confirmed cases of the virus worldwide — more than 99 percent in China — and 395 deaths. The organization assessed the risk as “very high” for China and “high” for the rest of the world.