According to Business Insider, the study authors wrote: "Prior SARS-CoV-2 infection that generated antibody response offered protection from reinfection for most people in the six months following infections". Pairs of antibodies that target slightly different parts of the viral spike protein could successfully prevent or treat SARS-CoV-2 infection in mice and hamsters at much lower doses than single-antibody treatments.
Dr Katie Jeffery, director of Infection Prevention and Control for Oxford University Hospitals said: "This is an exciting finding, indicating that infection with the virus provides at least short-term protection from re-infection - this news comes in the same month as other encouraging news about COVID vaccines".
At the same time, health care workers who did not have antibodies against COVID-19 were more likely to develop the infection.More news: Latest Five-Minute Cyberpunk 2077 Gameplay Trailer Will Give You the Chills
Antibodies build up during a viral infection and stop the virus from getting inside the body's cells and attacking the rest of the immune system.
Scientists are developing understanding of the role of T-cells but a recent study found people testing negative for coronavirus antibodies may still have some immunity.
They found that the TNF-alpha and IFN-gamma combination triggered tissue damage and inflammation that mirror the symptoms of Covid-19 along with rapid death. Scientists measured the levels of SARS-CoV-2 antibodies in the blood of approximately 30,000 study participants, including 1,200 who tested positive for the virus and recovered.
But none of the three became unwell.More news: Contestant dies after completing course on ‘Wipeout’ show hosted by John Cena
"These so-called memory T-cells after SARS-CoV-2 infection look similar to those after a real flu", said study co-author Dr Maike Hofmann, a scientist at the Department of Medicine II at the Medical Center - University of Freiburg. "It gives us hope that immunity to SARS-CoV-2 could last for several years", said Prof Deborah Dunn-Walters, Professor of Immunology at University of Surrey and Chair of the British Society for Immunology expert advisory group on covid-19 Immunology.
This "spike" is what numerous vaccines in development target.
Children usually develop the disease mildly, but the exceptions (severe covid-19 conditions that lead to death) exist.
Coronavirus is absolutely a new infection in people and people don't have immunity to the virus when the pandemic started. The researchers analyzed three types of immune responses: antibodies, B cells which destroy antibodies and T cells which destroy infected cells. They came to this conclusion: six months after infection, nearly all people still had a strong immune response, and therefore little risk of re-infection.More news: Jason Momoa Finds Yoga the 'Hardest Thing' He Has Ever Tried