According to the Centers for Disease Control and Prevention, about 140 million people in the United States are infected with the coronavirus.
Researchers estimated nearly 72,000 blood samples to estimate the number of infections. Data in late January show an increase in the number of infections that occurred when the omicron variant began to spread across the country.
According to CDC estimates, most children in the country have been infected with the virus at some point – almost 60% of people under the age of 17 have been infected so far, compared to about 43% nationwide.
A blood sample was taken at the CDB in late November the analysis calculated that 103 million people in the country have been infected with coronavirus, according to The Washington Post.
The increase in infections between then and until the last analysis was largely due to the high-transmission omicron variant, which began spreading across the U.S. late last year. In late January, this option was responsible for 500,000 cases a day, according to The Washington Post.
The The CDC collects its data by collecting blood tests conducted in commercial laboratories across the country for reasons unrelated to COVID-19, such as routine examinations or other treatments. Samples are evaluated for the presence of antibodies that could fight the coronavirus, and the percentage of people with antibodies is known as seropovalence.
Serapovalence data estimate the number of people with a “solution or past infection” and do not include people who have been vaccinated against coronavirus and have no history of infection, according to the CDC.
Although the study measures the presence of antibodies in different demographic groups, it does not measure the amount of antibodies, the CDC noted. In essence, the agency said it could not conclude that people with antibodies have strong protection against re-infection.
The CDC said it did not have enough samples from Nevada, Utah, Arizona or North Dakota to make estimates and include them in the analysis. At least half of the people in 14 states have been infected, the analysis shows, writes The Washington Post.
Wisconsin had the highest level of seropovalence, which means the highest number of infections – according to data, about 56.1% of the population, or about 3.2 million people, were infected with COVID-19. At the other end of the spectrum, Vermont had the lowest seropovalence rate: about 18% of the population, or 111,000 people, were estimated to be infected.
According to The Washington Post, the estimated number of 140 million infections nationwide is “far more than doubled” by preliminary government estimates.