That's why the findings may not apply to people with mild COVID-19 cases, "although these results suggest those with milder cases may clear the virus faster from their body", study senior author Dr. Antonia Ho said in the release.
Now, in a new study, it seems like coronavirus immunity can last years, maybe even decades.
"We know from a previous study that antibody levels fall over time", Eyre said.
The researchers found a specific cell within the human immune system, the memory B cell, "remembers" infection by the virus, and if challenged again, through re-exposure to the virus, triggers a protective immune response through rapid production of protective antibodies. Of these, 79 focused on SARS-CoV-2, 73 of which included only hospitalized patients; eight in SARS-CoV and eleven in infection with MERS-CoV.More news: Redmi Note 9 Series Launching On November 26 In China
Australia moved a step closer to normal life on Sunday, opening some internal borders and easing restrictions in regions affected by COVID-19, as the vast majority of the country has seen no new community infections or deaths for weeks.
In this study, the team of researchers at the La Jolla Institute of Immunology in California, and the Icahn School of Medicine at Mount Sinai in NY, investigated multiple compartments of circulating immune memory to SARS-CoV-2 in 185 Covid-19 cases, including 41 cases more than six months post-infection. The new data also claims that these cells may remain in the body for a very long time, which also strikes off the possibilities of reinfection and the need for repeated vaccinations in the near future.
However, their study is aimed at checking how long immunity lasts in total.More news: Cloudy skies and possible drizzle today; tracking chance of Thanksgiving showers
The hospital tested staff regularly for Covid-19, both when they became unwell with symptoms and also as part of regular testing of well staff.
The Times also points to another recent study that showed that survivors of SARS, also caused by a coronavirus, still carry important immune cells 17 years after being infected.
COVID-19 continues to have an enormous impact on daily lives.
It is to be noted that there have been reports of isolated cases of re-infection with COVID-19 which raised serious concerns among the people about immunity being short-lived, and patients contracting COVID-19 swiftly after the first infection. What if we don't find a vaccine for Covid-19?More news: Streb leads at Sea Island as Zach Johnson closes the gap