The United States has begun taking blood samples from all countries to determine the actual number of people infected with the corona virus, using tests that work retrospectively, according to the report.
The new test is based on serological surveys, which differ from nasal swabs used to determine whether a person currently has a virus.
Instead, they look for whether there are certain antibodies in the blood that indicate that the person is struggling and then recovering from the disease – even if they never show symptoms.
These tests are seen as key to gradually reducing lockdown, by allowing those who have proven immunity to re-enter the community.
“We have only just begun testing and we will report this very quickly,” said Joe Bresee, deputy incident manager for the Center for Disease Control and Pandemic Control, according to the health website, Stat News.
He added the CDC will conduct three surveys: The first is on blood samples from undiagnosed people from some of the country’s coronavirus hot spots, the second national survey from various parts of the country, and the third study on health worker.
The first survey had begun at the weekend, but there were no strict deadlines for the other two.
That happened after the Food and Drug Administration (FDA) issued an emergency approval for the first serological test, by the North Carolina-based company Cellex, last week.
Separately, Stanford University conducted its own serological survey on Saturday in the city of Santa Clara, Jay Bhattacharya, a professor of medicine at the university, told AFP.
“We collect finger prick blood sample “Of the approximately 2500 volunteer participants chosen to become regional representatives and around 500 of their children,” he said, adding the results would be released soon.
© 2020 AFP
US begins blood test for coronavirus immunity: report (2020, 7 April)
taken April 7, 2020
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