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The researchers are also said to have calculated the terms for how long people with mild, moderate, or severe forms of coronavirus can infect others. This was taken into account in the amendments on patient isolation and additional PCR testing.
The following organizations participated in the collection and dissemination of this data: the European Center for Disease Prevention and Control (ECDC), the United States Center for Disease Control and Prevention (CDC) and the World Organization for Disease Control and Prevention. Health (WHO).
Studies show that mild to moderate COVID-19 patients are contagious for up to 10 days after the onset of symptoms. People who develop a severe form of the disease or who have a weakened immune system can infect others for up to 20 days after symptoms appear.
The studies did not show any cases of infection in clinically healthy patients whose nasopharyngeal swabs still contain the virus.
Based on the data from these studies, SAM updated the suspension procedure for COVID-19 patients in accordance with the recommendations of the ECDC, CDC, and WHO. No further PCR examinations of the nasopharynx and pharyngeal smear are required to determine recovery.
Under the updated regimen, in patients with mild COVID-19, isolation can be interrupted 10 days after the onset of symptoms if the patient is fever-free for at least 3 days without antipyretics and other coronavirus symptoms have resolved.
In patients with severe COVID-19, isolation can be interrupted 20 days after the onset of symptoms if the patient’s symptoms have resolved and they are fever-free for at least 3 days without taking antipyretic medications.
In patients with asymptomatic coronavirus infection, isolation can be discontinued 10 days after obtaining a nasopharyngeal and pharyngeal smear that has been detected by PCR for coronavirus.
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