Lexington-Fayette, Kentucky 2021-06-22 22:34:15 –
A new study by researchers at the National Institutes of Health suggests that during the first six months of the pandemic, COVID-19 was more prevalent in the United States than originally thought. Their actual estimates of COVID-19 cases are nearly five times higher than those reported from the test.
their Research quote About 17 million people were infected with COVID-19 and were not diagnosed in the first half of 2020. Data available at the time reported only about 3 million people with COVID-19 infections confirmed in the United States.
The team analyzed blood samples from more than 8,000 volunteers taken between May and July 2020. Volunteers have never been diagnosed with COVID-19 and the demographics reflect the demographics of the general population.
Approximately 5% of blood samples contained coronavirus antibodies.
“A pandemic feature of the coronavirus is that some people are infected with the virus that causes COVID-19 and have few or no symptoms.” Matthew J. Memory said, Director of Clinical Research Unit, MD, MS, NIAID Institute for Infectious Diseases.
“Counting the number of symptomatic people in the United States is essential to address the effects of pandemics and public health reactions, but has not been diagnosed to fully understand the prevalence of COVID-19. You need to count people. “
The team found that young participants between the ages of 18 and 44 had the highest proportion of antibodies compared to other age ranges.
There were also more women than men who had antibodies with no history of COVID-19 diagnosis.
In terms of ethnicity, African Americans are more likely to have undiagnosed infections, with 14.2% of participants showing antibodies. Hispanic Americans accounted for 6.1%, White Americans 2.5%, and Asian Americans 2%.
“Estimates of COVID-19 cases in the United States in mid-July 2020, 3 million out of a population of 330 million will be revised upwards by almost 20 million, including the proportion of asymptomatic positive results. Should be. ” Senior co-author Caitlin Sutler said: PhD, Head of NIBIB section on immunoengineering.
“This large gap between known cases at the time and these asymptomatic infections not only provides a retrospective understanding of this pandemic, but also affects preparation for future pandemics.”
This report is the first from a 12-month study by NIH researchers.