According to Singapore ’s Lianhe Zaobao reported on May 24, the latest study jointly published by the Singapore National Center for Infectious Diseases and the Singapore Academy of Medical Sciences showed that patients with new crowns became infectious after 11 days of infection.


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This study points out that a positive test of the new coronavirus means that the virus can survive, which is not equivalent to being infectious. Because after the 11th day of infection, the virus can neither be isolated nor cultivated. The kits currently used can only detect part of the virus genome, and cannot detect whether these genomes are viruses or “virus corpses.” The results of this experiment collected data from 73 patients, and also referred to the relevant data reports issued by Germany earlier.

Liang Yuxin, director of the Singapore National Center for Infectious Diseases, said: “After about 10 days, the patient is completely infectious. You can test every day, but a positive result does not necessarily mean Infectious. When the patient is not infectious, he can be discharged. The patients who have been discharged from the hospital will no longer spread the virus, and the public need not exclude them. “

She said that she is very confident in the results of this experiment, the only exception is those patients with weak immune systems, such as cancer patients in the new coronavirus may have a longer infectivity.

It is understood that the research report has been submitted to the Ministry of Health (MOH) of Singapore. The Ministry of Health in Singapore said it will carefully evaluate how to integrate the latest experimental results with patient clinical management plans. If the Singapore Ministry of Health agrees and adopts this study, more than 80% of patients with new crowns will be able to be discharged after 11 days of illness, and other critically ill patients will continue to receive treatment, but they do not need to be isolated.

(Original title: Singapore Study: 11 days after infection with the new coronavirus, it is no longer infectious)