A research team from the University of Missouri analyzed the reinfection rate of more than 9,000 severe Covid patients hospitalized in dozens of hospitals in the United States and determined that only 0.7% of the patients were re-infected with the SARS-CoV-2 coronavirus. Risk factors for reinfection include smoking and asthma.
Who is affected Serious form of Coronavirus disease, The disease caused Coronavirus SARS-CoV-2, The risk of infection is extremely low Rebirth From a pandemic pathogen. According to data from a new study, in fact, Less than 1% Hospitalized patients Coronavirus disease He was infected again in dozens of American hospitals. Smokers and asthmatics are at the greatest risk. Research indicates, Neutralizing antibody The protection caused by infection can effectively protect most people, although the actual duration of the “shield” has not yet been determined.
Leading the new investigation is an American research team led by scientists from the Department of Neurology at the University of Missouri. They work closely with colleagues from the Institute of Data Science and Computer Science, the Department of Internal Medicine, and the Tiger Health Innovation Institute.Researchers led by Professor Adnan I. Qureshi, Professor of Clinical Neurology at the University of Missouri School of Medicine, analyzed Reinfection rate Between December 1, 2019 and November 13, 2020, more than 9,000 Covid patients with serious illnesses were hospitalized in 62 medical institutions.
Only 63 out of 9,119 patients (lo 0.7%) The SARS-CoV-2 coronavirus was tested positive again, an average of 116 days (+/- 21 days) after the first infection, determined by two tamponi oro-rinofaringei na side And at least three months after the initial infection. Only 2 out of 63 reinfected patients (IL 3.2%) Lost his life complication Of reinfection.In the vast majority of cases, the severity of reinfection is much lower than the initial exposure, because scientists have observed “significantly reduced infection rates pneumonia, heart failure electronic Acute kidney injury Re-infection and primary infection”, as Professor Qureshi pointed out in a paper Press release.
From the data analysis, it can be seen that the people with the highest risk of reinfection are Smoker And suffering people asthma“Our analysis also found that asthma and nicotine addiction are related to reinfection,” the research coordinator noted. “This is the largest study of its kind in the United States. The important information is that COVID-19 may be re-infected after the first infection, and the duration of immunity determined by the initial infection is not completely clear,” Qureshi concluded . Research detailsPatients undergoing continuous laboratory testing were re-infected with SARS-CoV-2“Published in the professional scientific journal “Clinical Infectious Diseases”.