https://globalnews.ca/news/6623287/coronavirus-multiple-infections/amp/
https://www.who.int/docs/default-source/coronaviruse/who-china-joint-mission-on-covid-19-final-report.pdf
"Rain falls at all places, but it is the landscape which decides where the water is going to collect"
Keeping in mind the above wise words:
From the available knowledge, the duration of immunity of an infection of COVID-19 is unknown, reinfection is particularly likely in people with poor immunity
Dear Colleagues and Friends from RG, Currently, intensive research is conducted in many research centers conducting research in the field of genetics and virology, the purpose of which is to precisely determine the characteristics of the properties of Coronavirus Covid-19, including infectivity and pathogenicity, and to create treatment methods for patients, to create a vaccine. We already know a lot about this issue, but even more questions remain unanswered. Covid-19 coronavirus can be infected more than once like any other virus that does not choose a living organism to attack, but attacks all living organisms that are at an appropriate distance, unsuccessfully or effectively. Of course, if a living organism has a strong immune system and / or does not meet the requirements for an effective attack by the virus, i.e. ending in infection, then the virus attack remains ineffective in this situation, i.e. it does not cause infection or disease.
On the other hand, many data indicate that a person who has been cured of Covid-19 acquires natural immunity and should not get sick twice, but still 100%. this is not confirmed due to the lack of sufficient amount of verified data. In addition, it cannot be excluded that this virus will mutate in such a direction that it will cause a different kind of disease and then theoretically it would be possible to get sick again a slightly different disease.
Covid-19 coronavirus in context with many other types of viruses that previously caused various diseases and epidemics in humans is characterized by a relatively high level of infectivity and mortality. Limiting the level of contagiousness and mortality at the moment (mid-March 2020) is possible mainly by maintaining certain rules of safety and hygiene, including frequent washing of hands with the use of detergents. In many countries where the Coronavirus Covid-19 epidemic is still developing nowadays, recommendations are legally sanctioned not to leave the home unless it is particularly necessary, such as buying food and / or medicine.
In my country, the government even recommends people who feel unwell, who detect symptoms of a cold, e.g. cough, runny nose, fever or other symptoms of a cold or flu, to stay at home, not to go out and go to the hospital alone, but to they called the hospital or specially appointed medical services to first consult a doctor by phone or via the Internet. The idea is not to leave the house without a serious and justified reason, not to infect other people, not to infect medical services, including doctors, nurses and other health care personnel, because if there are not enough healthy doctors, nurses and other personnel Health care is a pandemic problem Coronavirus Covid-19 will be much, many times larger. Therefore, I also join these recommendations and recommend to the community, to the citizens of countries where many people have already been infected with this virus: If you can, stay at home.
Best wishes.
Dariusz Prokopowicz
Not from the same strain !!
When you are talking about the same strain, there were incidence happened initially. The main reason was the virus was in the dormant/ latent stage initially when patient got discharged but reappeared later when the patient's immunity went down or there could be disease enhancement phenomenon after some times !!
@ Khansa Younis
This article gives latest information:
Can You Be Re-Infected After Recovering From Coronavirus? Here's What We Know About COVID-19 Immunity
https://time.com/5810454/coronavirus-immunity-reinfection/
please have a look at the following link:
https://www.researchgate.net/post/Is_it_possible_to_catch_COVID-19_twice
Please see the links below.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177092/pdf/main.pdf
https://www.bmj.com/content/bmj/369/bmj.m1498.full.pdf
Such patients have certainly developed specific antibodies. In this case if they are reinfected with the same strain of virus it is unlikely that they will be sick again
A different strain of the same virus could infect the individual.
Usually, when a person gets infected with COVID 19, in his body antibodies are developed to kill the virus and protect the body from further infection. The quality and strength of the body's antibody response determines how well the virus will attack again. To repeat infection, is to decrease in the immunity and also depend on how a person's body responds to the repeat infection. Generally, younger people tend to have better immune system and will be able to produce stronger immune response and will have stronger future immunity than older people. It is also thought that the repeated infection might be due to undetected infection of former treatment.
Currently, there is “no evidence” that people who have recovered from COVID-19 and have antibodies are protected from a second coronavirus infection.
Source: https://www.indiatoday.in/world/story/no-evidence-recovered-covid-19-patients-cannot-be-reinfected-who-1671116-2020-04-25
Reinfection with the virus that causes COVID-19 means a person was infected, recovered, and then later became infected again. After recovering from COVID-19, most individuals will have some protection from repeat infections. However, reinfections do occur after COVID-19.
https://www.cdc.gov › reinfection
Reinfections and COVID-19 | CDC
Dear Khansa M. Younis . Yes. See the following useful RG links: Article Recurrent COVID-19 including evidence of reinfection and enh...
Article The Possibility and Cause of Relapse After Previously Recove...
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0261221
https://www.nature.com/articles/s41598-022-05325-5
https://jim.bmj.com/content/69/6/1253
Kindly see also the following useful RG links: Article Recurrent COVID-19 infection in a health care worker: a case report
Article A Systematic Review of the Protective Effect of Prior SARS-C...
https://jamanetwork.com/journals/jama/fullarticle/2766097
Article Recurrence of SARS-CoV-2 viral RNA in recovered COVID-19 pat...
https://www.karger.com/Article/FullText/514675
https://academic.oup.com/jid/article/223/3/409/5868459
I've been looking at the above responses.
I know an older man (apparently healthy) who nearly died after becoming ill with COVID-19. It was diagnosed as long COVID and he was very unwell for a long period of time.
But after he recovered, we then heard that he had it again, but recovered quickly. His COVID history was blamed onto his immune system.
I expect to see him today, hopefully, God willing, at the Church.
As far as I am aware, I have not known anyone who has had covid-19 twice. I have, however, known of a person who lived as a recluse in his home alone for over a year. He would not let anyone into his home and he wouldn't leave it. The only contact with the outside world was via zoom. However, one day he became unwell and was diagnosed with covid-19. He was found dead four days later. We still do not understand how this happened, but do wonder whether he had at some point had something else in the past that had reduced his immune system to stop it fighting off the covid-19.