The report claims to be the first significant look at how coronavirus resistance functions.
Researchers at the University of Oxford say the findings should give some confidence to the more than 51 million people worldwide who have been infected with the epidemic.
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".
He explained after following individuals for six months that the researchers were excited to talk about their outcomes.
The study, part of a major staff testing program, covered a 30-week period between April and November 2020. Septic shock suggested an untreated urinary infection, E. coli in his body from his own feces hinted at poor hygiene, and aspiration pneumonia indicated Wallace, who needed help with meals, had likely choked on his food.
"Our findings are that approximately five percent of all delivered women with Covid-19 infection develop a severe or critical illness", said study author Emily Adhikari from the UT Southwestern Medical Centre in the US.
The researchers then followed whether staff who had been infected before had the same number of new COVID-19 infections as those who had not been infected before.
U.S. biotech firm Moderna announced this week its vaccine candidate was almost 95 per cent effective in a trial - a week after similar results were announced by pharma giant Pfizer and its German partner BioNTech. They found 91.1% of those who had recovered from COVID-19 had antibodies against the virus months after infection.
However, 89 of the more than 11,000 hospital staff members who did not have antibodies - proteins produced by the human immune system to fight off infection - contracted the virus during the study period.
Three members of staff with antibodies did test positive for the virus that causes COVID-19 but were all well and did not develop symptoms.
"Studies like this one are absolutely vital in helping us to understand how this new virus behaves and what the implications are for acquired immunity".
Globally, more than 57.06 million people have been reported to be infected by the coronavirus and 1,362,744 have died.
However, the ongoing study has an end goal of verifying how long protection from reinfection lasts in total.