A research paper revealed the period of time after which a patient with the emerging coronavirus "SARS Cove 2" is no longer able to transmit the infection to others, which carries reassuring news that the infected do not continue to transmit the infection with the virus that causes "Covid-19" after their recovery.

The research paper was released by the National Center for Infectious Diseases and the Department of Infectious Diseases Physicians at the Academy of Medicine, Singapore, in May.

According to the paper, after “7-10 days” from the onset of symptoms, the patient is no longer able to transmit the infection to others.

The researchers said that the incubation period for the emerging corona virus (that is, the period from catching the infection until the appearance of symptoms) is an average of five days.

It can range from 2-14 days.

They added that the most common symptoms of SARS-CoV-2 infection are:

1- Fever, defined as an increase in body temperature above the normal level, and a person is considered to have a fever if his temperature is 38 degrees Celsius or more (100.4 Fahrenheit).

2- Dry cough.

3- Fatigue.

4- Shortness of breath.

5- Trembling.

6- Sore throat.

7- Muscle pain.

8- Loss of the ability to smell.

9- Headache.

The researchers said that, based on the data accumulated since the beginning of the “Covid-19” pandemic, the infectious period of the SARS-CoV-2 virus in individuals with symptoms may begin from about two days before the onset of symptoms, and the infectious period in which the infected person is able to transmit the infection to others continues for a period of time. 7-10 days after symptoms appear.


Active viral replication decreases rapidly after the first week, and no viable virus was found after the second week of illness although virus RNA continued to be detected using the PCR assay.

These findings are supported by epidemiological, microbiological and clinical data.

Accordingly, the researchers said, the focus could be on testing people with severe respiratory symptoms who are suspected of having Covid-19.

Experts believe the findings could significantly reduce the time patients spend in hospitals and care facilities, and the resources needed to care for them.

Here we present 5 frequently asked questions about the symptoms of corona, its persistence, and the duration of infection: 1- When do the symptoms of corona appear?

Corona symptoms appear after catching a virus infection about five days on average, and it can range from 2-14 days.

2- When does a corona patient become non-contagious?

After 7-10 days from the onset of symptoms, the patient is no longer able to transmit the infection to others.

3- What is the incubation period for the Corona virus?

The incubation period for the emerging coronavirus (that is, the period from catching the infection until symptoms appear) is on average five days.

It can range from 2-14 days.

4- What is the duration of corona infection?

The infectious period of the Corona virus in individuals with symptoms may begin from about two days before the onset of symptoms, and the contagious period in which an infected person is able to transmit the infection to others continues for 7-10 days after the onset of symptoms.

5- How many days do corona symptoms last?

The duration of the disease and its symptoms depend on several factors, such as the person’s health status and age, and generally many people suffer from symptoms for two weeks, some have a longer period and others have a shorter period.

But if a person has a severe case of COVID-19 and complications such as pneumonia develop, symptoms will likely last longer.

More severe patients may experience symptoms such as shortness of breath for six weeks or longer.

Also, even mild cases of Covid-19 disease may occur with symptoms that last longer, as a study by the US Centers for Disease Control and Prevention found that a large number of young patients who were previously healthy - one in every Five- They do not return to their usual health within 14 to 21 days after testing positive for the virus.

Therefore, symptoms may last more than two weeks after testing for the positive virus, and the possibility of this increases with age, meaning that older people are more likely to have symptoms for a longer period.

new protocol

And Hamad Medical Corporation in Qatar announced Thursday (May 28, 2020) a new protocol according to which patients infected with the Corona virus “Covid-19” who are currently being observed in the facilities of the institution were treated, which includes the removal of the majority of patients infected with the virus from health care facilities after 14 days from the date of obtaining the first positive swab for the virus from them.

The Foundation said in a post on its Facebook page, that this is in accordance with the instructions of the specialized medical team, including downloading and activating the “Ehteraz” application on mobile phones, and they must remain in the home quarantine without leaving the house for any reason for an additional week, as the Anyone who violates these requirements will expose himself to penalties in accordance with the Penal Code, the Prevention of Infectious Diseases and the Community Protection Law.

The Foundation stated that before that, many patients were staying in the hospital or isolation facilities for more than 14 days, as their discharge required that the result of a negative PCR test twice before they were allowed to leave the health facility.

The new protocol will benefit these patients by enabling them to return to their homes and to their normal lives as quickly as possible.

Dr. Naima al-Mawlawi, a virologist at Hamad Medical Corporation, said that the new protocol for the discharge of patients infected with Covid-19 is an encouraging step forward and brings the State of Qatar in line with the recommendations of the World Health Organization and the latest scientific evidence that shows that 10 days after the first positive smear, the majority of patients do not become infected. “Covid-19” is contagious again, not contagious.

She added that until now, the discharge procedures have required patients to wait for the results of two negative swabs to come before they can return to their homes, but the negative examination result may take several weeks to appear in some people because the body still contains traces of the virus.


Dr. Naima Al-Mawlawi explained that Qatar will take an additional step, and a 14-day period will be adopted between the first positive smear and the patient's discharge from the hospital.

The new discharge policy applies only to patients who do not require medical support, while patients with moderate to severe symptoms who require ongoing medical treatment will be cared for in a medical facility until their symptoms resolve.

Dr. Nasser Al-Ansari, Head of the Infection Control Department at Hazm Mebaireek General Hospital (Qatar), explained that under the new policy, patients who do not show any symptoms will be discharged 14 days after the initial diagnosis, and for patients with mild symptoms, isolation can be stopped after 14 days. from diagnosis or at least 5 days after symptoms have resolved (whichever is longer).

He said that the past few weeks have witnessed a rise in the number of patients who are fully recovering from "Covid-19", and this is very encouraging, and it is expected that the number will continue to increase in the near future.


full recovery

Al-Ansari added that although some people can become severely ill from the virus, the vast majority of patients fully recover and experience only mild symptoms.

He pointed out that there is clear evidence from all over the world indicating that after 10 days of positive results of infection with the virus, people do not become carriers of infection, and this means that they can return to their homes and to their normal lives.