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Some children have reportedly developed immunity against Covid-19 by taking other forms of the coronavirus. Others have reportedly developed antibodies after being chronically exposed to their parents’ SARS-CoV-2 virus.
Young people are more likely to develop immunity without even being infected with the virus, according to two studies unveiled in two scientific journals. According to the first study, published in the journal Science, 44% of children developed effective antibodies against Covid-19, particularly thanks to exposure to other coronaviruses. According to the second study, published in the journal Nature Communications, the children would have developed antibodies after being chronically exposed to the SARS-CoV-2 virus by their parents.
Nearly one in two children is immune
Therefore, exposure to other coronaviruses would protect one in two children from the SARS-CoV-2 coronavirus. To reach this conclusion, the British researchers looked at a sample of 302 minors, comparing the blood results of people with the virus with those who did not.
According to this report, 43.8% of children and adolescents between the ages of 1 and 16 who did not contract the virus because they carry IgG antibodies that protect against Covid-19 infection. “Our results show that children are much more likely to develop cross-reacting antibodies than adults “, says Kevin Ng, author of the study. “More research is needed to understand why, but it could be because children are exposed more regularly to other coronaviruses.”
Enhanced antibodies
Furthermore, the family would play an important role in the formation of antibodies against Covid-19 in children. “The study authors examined the immune profile of a Melbourne family of two parents with Covid-19 with symptoms and their three school-aged children.”, indicates why doctor.
Indeed, exposure to the virus would have led these children to develop antibodies without having an infection. “The youngest child, who showed no symptoms, had the strongest antibody response“says MCRI Doctor Melanie Neeland. “Despite the active immune cell response in all children, the levels of cytokines, molecular messengers in the blood that can trigger an inflammatory response, remained low. This was consistent with their mild or no symptoms.”
Therefore, chronic exposure in children would cause the immune system to develop antibodies, which prevent infections.
Suruthi SRIKUMAR
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