An individual’s immunity that has been formed by previous infection or vaccination will have a memory of the parent virus.
But because Omicron is a deviant strain, meaning it has deviated quite a bit from its parent Covid strain, it has many differences.
As a result, “our immune system is unable to recognize the virus as the original virus and thus has a chance of reinfection. Along with the above, the weakened immunity of people who are naturally infected However, over time will also contribute to reinfection,” Dr. Dipu TS, associate professor, Department of Infectious Diseases, Amrita Hospital, Kochi, told IANS.
Dr Ashok Mahashur, consultant thoracic physician at PD Hinduja Hospital & MRC, Mahim, Mumbai, said: Although there are still cases of reinfection, “there is no solid evidence to support it”. Omicron recurrence in an individual.
A recent study led by the UK’s Imperial College London has shown that the risk of reinfection with the Omicron variant is 5.4 times greater than with the Delta variant.
This implies that Omicron’s ability to protect against reinfection from past infection may be as low as 19%, the researchers said.
Dr Rahul Pandit, director of critical care, Fortis Hospital Mumbai, said: “Omicron causes reinfection because it has ‘immune escape’ – meaning people who have had previous infections that and have antibodies, so either who is immunized and has antibodies, or has both, is called ‘hybrid immunity’.”
Omicron has more than 30 mutations on its mutant proteins, giving it a break from immunity. That’s why it also infects people who previously had antibodies.
“However, it is not yet known whether Omicron infection recurs in these people; that remains to be studied and considered,” said Pandit, who is also a member of the country’s Covid-19 Task Force. National and Maharashtra, told IANS.
“We should not speculate on whether such reinfection will occur. I have not seen a case where a patient with Omicron was re-infected with another Omicron infection, nor has it been reported anywhere. anywhere in medical and medical journals, he said.
However, some Western experts have argued that Omicron could flare up again.
“Yes, you can get Omicron twice,” said Stanley Weiss, a professor at Rutgers School of Medicine in New Jersey.
William Schaffner, professor at Vanderbilt University School of Medicine, added: “Data regarding Omicrons specifically have only recently been published, but there is no reason to think that Omicrons make any difference in this respect. compared to previous variants”.
However, Kingston Mills, professor of experimental immunology at Trinity College Dublin, said it was “too early” for people to catch the virus and then get it again. Mills has told the Financial Times the picture could be clear in six months.
Mahashur said that in India, cases of Covid re-infection have been reported and especially in people with low immunity.
“The best way to prevent this is to follow proper Covid behaviour. Because there’s no way to know if the virus is there. The virus may be there, but the patient may not have it. symptoms, so the best way to prevent it is by getting the vaccine, wearing a mask, washing your hands properly and avoiding crowded places,” Mahashur told IANS.