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How many days are you contagious with corona?

Let see what the CDC says

"Available data indicate that persons with mild to moderate COVID-19 remain infectious no longer than 10 days after symptom onset. Persons with more severe to critical illness or severe immunocompromise likely remain infectious no longer than 20 days after symptom onset."

COVID-19 most contagious in first 5 days of illness, study finds

Eight studies that used respiratory samples from patients in their first week of illness successfully cultured live virus, but no live virus was found in any sample collected after 9 days after symptom onset, despite persistent high viral loads.

SARS-CoV-2 viral load peaked in the upper respiratory tract, believed to be the primary source of transmission, in the first 5 days after symptom onset. SARS-CoV-1 peaked at 10 to 14 days, and MERS-CoV peaked at 7 to 10 days, which the researchers said may be why COVID-19 spreads more quickly in the community and is more difficult to contain.

Infectious for about 9 days

The study found no difference between viral load peaks in COVID-19 patients with and without symptoms, but indications are that asymptomatic patients clear the virus faster and therefore could be contagious for a shorter time

While the authors said that they can't recommend an optimal duration for quarantine because their study involved only confirmed cases rather than possible exposures, the results appear to indicate that people with COVID-19 can infect others for about 9 days. Most countries currently recommend that COVID-19 patients quarantine for 10 days.

Source: University Of Minnesota

https://www.cidrap.umn.edu/news-perspective/2020/11/covid-19-most-contagious-first-5-days-illness-study-finds

How many days are you contagious with corona?

How soon after I'm infected with the new coronavirus will I start to be contagious?

The time from exposure to symptom onset (known as the incubation period) is thought to be three to 14 days, though symptoms typically appear within four or five days after exposure.

We know that a person with COVID-19 may be contagious 48 to 72 hours before starting to experience symptoms. Emerging research suggests that people may actually be most likely to spread the virus to others during the 48 hours before they start to experience symptoms.

If true, this strengthens the case for face masks, physical distancing, and contact tracing, all of which can help reduce the risk that someone who is infected but not yet experiencing symptoms may unknowingly infect others.

Source: https://www.health.harvard.edu/diseases-and-conditions/if-youve-been-exposed-to-the-coronavirus

If you've been exposed to the coronavirus

If you've been exposed, are sick, or are caring for someone with COVID-19

Question 1: How long after symptoms occur are you still contagious? Also, if you feel better for a couple days and then “relapse,” are you still considered contagious?

How many days are you contagious with corona?

There’s a lot about this virus that is still unknown and unpredictable, not the least of which is how the course of recovery may progress for any individual patient. If you contract SARS–CoV-2, the virus that causes the COVID-19 illness, we can’t tell you how sick you will get, which symptoms you will have, or how long it will take for you to fully recover. Nor can we say exactly how long you may be contagious. We’ve identified possible ranges for all of these things, but what we are most sure of is that the course of the illness varies greatly from person to person.

That said, the Centers for Disease Control and Prevention (CDC) has established minimal criteria for your return to whatever passes for “normal life” these days. If you’ve been sick with COVID-19, whether your illness was confirmed by testing or symptom-based criteria, the CDC recommends that you remain isolated for at least 10 days since symptom onset and up to 20 days in cases of severe illness.

What does “recovery” mean? According to the CDC, it means that you’ve gone three days without a fever, and without the use of fever-reducing medications, and that your other symptoms, such as cough or shortness of breath, have shown progressive improvement or have gone away completely. In other words, if you’re fever free and improving for two days but start running a fever again or coughing more, that 72-hour countdown clock gets reset, and you’ll need to start counting down those three days again as soon as you’re once more fever free and otherwise improving.

Finally, keep in mind that these are minimal criteria. If you have the luxury of taking more time to be sure that you’ve finally, actually, really, truly recovered, you should take it. And coming out of isolation does not mean throwing caution to the wind. You should still continue taking the precautions we are all taking at this time — staying home as much as possible and, if you must go out, wearing a mask and maintaining social distance between others and yourself.

Source: MIT Medical

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References

1. CDC

https://www.cdc.gov/coronavirus/2019-ncov/hcp/duration-isolation.html

2. Harvard Medical School

https://www.health.harvard.edu/diseases-and-conditions/if-youve-been-exposed-to-the-coronavirus

3. University Of Minnesota

https://www.cidrap.umn.edu/news-perspective/2020/11/covid-19-most-contagious-first-5-days-illness-study-finds

4. MIT Medical

https://medical.mit.edu/covid-19-updates/2020/11/recovery-covid-19-how-long-someone-contagious

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This Coronavirus pages are intended solely to inform our clients and online visitors about coronavirus/COvid-19. All facts are from reliable sources like WHO, CDC and respective Government Health Agencies. Readers can either read through the facts which we summarized in this page or go direct to source through the link listed at the bottom of each page.

References:

1. WHO Coronavirus disease (COVID-19) pandemic

2. CDC Centers for Disease and Prevention Control

3. Canada Coronavirus disease (COVID-19)

4. Health.com

5. Harvard Health Publishing Harvard Medical School

6. Google Covid-19

7. Wikipedia COVID-19 pandemic

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