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When do you stop spreading Covid and how long does immunity last after passing the disease?

The data offered by the Ministry of Health shows a downward trend in new infections and in the accumulated incidence in those over 60 years of age.

The latest data from the Ministry of Health show a downward trend in new infections, as well as the cumulative incidence in people over 60 years of age. The autonomous communities reported 14,373 new cases last Tuesday, compared to 19,417 the same day last week, of which 9,028 have occurred in people over 60 years of age.

However, many people continue to see their daily lives affected by positives from acquaintances, friends or co-workers, so it is worth asking how long the Covid lasts in our body and the duration of immunity once the infection has passed. illness.

When does Covid stop spreading?

There are different studies that have tried to determine the exact time that Covid spreads. The European Center for Disease Control (ECDC) establishes that, if there is a positive test, the recommendation is to stay five days at home isolated from other people of the same household, with the use of the mask in case it is necessary to be in contact with those other people and the advice not to travel during that period of time.

Isolation ends at the end of these five days if there is no fever in the last 24 hours and the symptoms improve, and it also speaks of five days if there are no symptoms of any kind. When you get sick with a serious condition, the recommendation goes to 10 days of quarantine.

In this sense, the ECDC stresses that it is necessary to take precautions until the tenth daytaking as reference day 0 as the date of exposure: day 1 would be the first complete after the last contact with the person who had Covid-19.

How long does Covid last in our body?

One of the doubts that have been raised the most since the arrival of the coronavirus lies in how long it takes to be eliminated from a person’s body. Several studies have tried to shed light on this, such as the published by BMJ Journals.

In said publication, signed by nine people, the evolution of more than 4,500 residents of the Reggio Emilia regionin Italy, who tested positive in 2020. The area in Italy was chosen for being one of the points where the Covid began with the strongest force in Europe.

The results concluded that Covid-19 takes a long time to be eliminated from the body. average of 30 days after the first positive result in a testand a average of 36 days after symptoms first appear.

Another more recent study by the US National Institutes of Health (NIH) concludes that the virus could persist even months after the onset of symptomsespecially in cases associated with persistent Covid and long-term symptoms.

The problem is that many tests are negative, despite the fact that the coronavirus still remains in the body. In this sense, the BMJ study recorded that one in four results are false negatives.

The duration of symptoms with Omicron

A study published in the journal ‘The Lancet’ sheds light on the duration of symptoms with new sublineage variants of Omicron, the predominant strain in global cases. Scientists at King’s College London have shown that this duration depends on the variant with which people have been infected. In the investigation they have the samples of people who have three doses of the vaccine.

The conclusions of the study reveal that the symptoms in infected with Ómicron last a mean 4.4 days. It is a shorter period than that of the symptoms with Delta, which remain up to an average of seven days in infected people. As a reason, experts point out that it may be due to a shorter period of infection.

Remember that these are the most common symptoms in affected people:

  • Fever
  • Fatigue
  • Tos
  • Throat pain
  • Headache
  • Dolor muscular
  • elevated heart rate

Immunity after Covid

The United States Center for Disease Control and Prevention (CDC) indicates that the duration of immunity after passing the coronavirus It depends on various factors and the affected person.although the WHO goes further and points out that the levels of antibodies vary according to the severity with which the Covid has passed.

‘Science’ published a study in which it stated that immunity after contagion lasts a eight month minimum, although the probability increases with the administration of booster doses. In addition, the vaccines adapted to Ómicron -including the Spanish one from Hipra- will arrive in the fall of this year and could significantly increase protection against the new variants.

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