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When are you most contagious with Covid? How long the symptoms last and Omicron incubation period explained

Omicron variants continue to cause record Covid-19 cases in the United Kingdom.

However, data suggest that this variant usually does not cause the serious illnesses of previous strains. This is especially true after booster vaccinations.

The proliferation of cases continues to self-isolate more and more people, promote hospitalization and burden medical services.

Scientists believe that part of the reason for the rapid increase in Omicron cases may be that they may infect people faster than older strains such as Delta and Alpha.

Here’s everything you need to know how long it will take and when people will be most infected.

When is Omicron most contagious?

For previous variants, the World Health Organization said symptoms could begin to develop within 2 days to 2 weeks after infection.

However, the incubation period of Omicron is much shorter and is thought to be between 3 and 5 days.

People are considered to be most infectious 1-2 days before the onset of symptoms and 2-3 days thereafter.

This helps explain why Omicron was able to spread so rapidly because people infected the virus before they noticed it.

detail COVID-19

Health Minister Sajid Javid said in December: “According to a recent analysis by the British Department of Health and Security, the Omicron variant may have a shorter difference between infection and infectivity than the Delta variant.”

Dr. Allison Arwadi, Commissioner of the Chicago Public Health Service, told NBC:

“The time between someone’s exposure to Covid and the possibility of causing an infection is shorter. The time it takes for symptoms to develop is shorter, the time that someone can be infected is shorter, and much more. For humans, the time it takes to recover is also shorter, often because more people are vaccinated. “

According to the data, the majority of people become infectious 7 days after they begin to experience symptoms, or after the first test is positive, and the majority are infectious 10 days later, especially when vaccinated. Will disappear.

It is worth noting that many report that they are experiencing symptoms with Omicron that are different from the symptoms most commonly associated with Covid-19. Cough, fever, shortness of breath, loss, or changes to taste or smell.

Some of those symptoms are:

  • Malaise
  • Body aches and pain
  • headache
  • Throat is faint
  • snot

If any of these symptoms occur, you should perform an immunochromatography, isolate whether they are positive or not, and order a confirmatory PCR.

How positive is the Covid test?

Most people stop positive testing after they begin to experience symptoms or within 10 days of receiving the first positive test.

However, it is possible to continue to test positive for weeks or months after being infected with the virus.

Fortunately, even if the test is positive for a long time, it is unlikely that it will actually be transmitted.

The Gavi Vaccine Alliance explains: “The time it takes to get a negative test after being infected with Covid-19 depends on the severity of the case and the test itself.

“A PCR test that can find and amplify some of the viral genetic material (RNA in the case of Covid-19) in our body, making it extremely sensitive and even detecting the presence of viral fragments.

“This is because fragments of viral RNA can remain in our body after the infection has ended and the virus has been removed from the system.”

In the UK, anyone can leave self-quarantine after 10 days, even if the test is positive. The only exception is if you are still feeling strong symptoms. In that case, you should continue to quarantine until you feel better. In this case, coughing and shortness of breath are not considered strong symptoms. This is because most may continue for some time after recovery.

In addition, if fully vaccinated, if negative on days 6 and 7, you can leave quarantine after 7 days.



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