Study Estimates 76 Percent of Brazilian City Exposed to SARS-CoV-2
Study Estimates 76 Percent of Brazilian City Exposed to SARS-CoV-2
The number, extrapolated from antibodies present in blood donors in Manaus, should be treated with caution, experts warn.
Study Estimates 76 Percent of Brazilian City Exposed to SARS-CoV-2
Study Estimates 76 Percent of Brazilian City Exposed to SARS-CoV-2

The number, extrapolated from antibodies present in blood donors in Manaus, should be treated with caution, experts warn.

The number, extrapolated from antibodies present in blood donors in Manaus, should be treated with caution, experts warn.

seroprevalence
COVID-19 May Have Arrived in US in December: Study
COVID-19 May Have Arrived in US in December: Study
Max Kozlov | Dec 2, 2020
SARS-CoV-2 antibodies detected in blood donor samples indicate infections could have occurred in the US more than a month before the first confirmed case, but some experts remain skeptical.
Vast Majority in US Remain Susceptible to COVID-19: Study
Vast Majority in US Remain Susceptible to COVID-19: Study
Max Kozlov | Sep 28, 2020
Fewer than 1 in 10 dialysis patients sampled had antibodies against the novel coronavirus as of July, indicating that the greater population is far from levels required to achieve herd immunity.
COVID-19 Antibodies Last for at Least Four Months After Recovery
COVID-19 Antibodies Last for at Least Four Months After Recovery
Amanda Heidt | Sep 2, 2020
The results from a study in Iceland can’t say if a recovered patient’s antibodies can protect them from subsequent reinfection.
Largest Seroprevalence Study in US Shows Vast COVID-19 Undercount
Largest Seroprevalence Study in US Shows Vast COVID-19 Undercount
Amanda Heidt | Jul 22, 2020
Actual cases may be as much as 6 to 24 times higher than reported, but we’re still a long way off from herd immunity.
Researchers Applaud Spanish COVID-19 Serological Survey
Researchers Applaud Spanish COVID-19 Serological Survey
Emma Yasinski | May 28, 2020
After initial setbacks, the country’s recent antibody screen estimates that 5 percent of the population has been exposed to SARS-CoV-2.
special report
Why the Accuracy of SARS-CoV-2 Antibody Tests Varies So Much
Why the Accuracy of SARS-CoV-2 Antibody Tests Varies So Much
Diana Kwon | May 5, 2020
The FDA cracks down on test makers as independent evaluations of their products’ performance show a need for improvement.