March 17, 2021 – Another 16 million Americans were infected with COVID-19 in the first 9 months of 2020, according to a new study.
Investigators evaluated 61,910 adults who reported feeling well upon applying for life insurance. A total of 4094, or 6.6%, was a positive Coronovirus antibody test, Meaning that they were previously infected with the virus.
“This number compares to the number of clinically diagnosed cases infected with COVID-19,” said lead author Robert L. Stout, PhD, chief scientific officer at Clinical Reference Laboratory, Inc. in Leedraksa, KS. Will double the number of people taking place. ” .
“By September, the scope of Universal epidemic The number of reported cases was nearly double, “Stout added.” It’s not like that Measles, Where it is easily recognized. Quite simply, for the asymptomatic patient, they think everything is fine and continue to go about their normal activities. Some practices recommended CDC guidelines in public places, while some may not. “
Research Paper Was published online on 16 March JAMA Network Open.
Once investigators evaluated the national sample in September, they used that data to estimate the number of total unchanged U.S. cases based on census data.
Sex, age, and state-by-state comparisons
The cross-sectional study included age, sex, residence status, and antibody status. The average age of the people in the study was 39 years. Out of 4094 positive cases, 54% were male.
The rate of infection in females was 6.9% compared to 6.4% in males.
The lowest infection rate was 2.8% among people aged over 70%. In contrast, the rate for the youngest child up to the age of 30 was 9.8%.
Infection rates vary widely by state, ”Stout and Couthor Steven Righetti, MD, from Massmutual.
The highest rate in September was 14.4% in New York, 12% in Louisiana, and 10% in Nevada. The states with the lowest rates included Oregon with 1.5%, Maine with 0.6%, and Alaska with 0%.
Implications and doubts
Researchers suggested a more widespread epidemic, saying, “Our estimate has led to more than double the number of infections reported than reported to the Centers for Disease Control and Prevention.”
Potential limitations of the study include self-reporting of health – all people reported feeling well – and the blood test evaluated is a random sample of the overall population.
Medscape said, “Overall, the findings are difficult to interpret, as the sample for the study was a convenience sample of individuals applying for life insurance,” Neeraj Sood, told Medscape.
The number may be even higher. “People applying for life insurance are more educated, affluent, and perhaps more at risk. Therefore the findings of this study do not generalize to the general population and likely represent lower seroprevalence in the general population.” Sood is the director of the COVID initiative at the University of Southern California Schaeffer University in Los Angeles.
The principal authors of Sood were JamaResearch Paper It was published in May that assessed infection rates among adults in Los Angeles County.