Young people who previously contracted the coronavirus and subsequently recovered are not immune from potential reinfection, according to the study.. The findings suggest that the presence of antibodies after the initial infection is not sufficient to prevent subsequent reinfections, according to Medicine News..

Researchers at Mount Sinai Icahn School of Medicine examined data from over 3,000 healthy members of the United States Marine Corps. Military personnel aged 18 to 20 were observed during the study period from May 2020 to November 2020. Researchers found that about 10 percent of military personnel who were previously infected with the Wuhan coronavirus contracted it again.

19 out of 189 Marines infected with COVID-19 have contracted the virus again, according to a study published in The Lancet. This was matched with new infections found in 50 percent of participants - 1,079 out of 2,247 military personnel - who did not contract the pathogen.. Marines who tested positive a second time during the study period were isolated and the researchers conducted additional tests. Meanwhile, Marines recently infected with COVID-19 were measured for neutralizing antibodies..

The study authors then looked at their results to compare the antibody response in re-infected and re-infected marines.. Using the results obtained, the authors also sought to understand why repeated infections occurred..

They found that in those who tested positive for the coronavirus, reinfected marines had lower levels of antibodies against the virus than newly infected marines.. In addition, re-infected military personnel had about 10 times less pathogen in their bodies compared to military personnel who were infected for the first time..

The findings suggest that some reinfected people can transmit the virus, but the authors noted that this theory deserves further study.. The researchers also noted that while their study looked at young, healthy, and mostly male recruits, the risk of reinfection would also apply to young adults, regardless of gender..

Professor and senior author of the study, Dr. Stuart Seelfon, warned young people that despite recovering from a previous infection, they could still get the Wuhan coronavirus again.. “Immunity is not guaranteed by past infections, and vaccinations that provide additional protection are still needed for those with COVID-19,” the researchers said..

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