U.S. rapid testing may not detect Omicron

“Early data suggests that antigen testing can detect Omicron variants, but may reduce sensitivity,” the US Food and Drug Administration said.

According to a report by the Vietnam News Agency in Washington, on December 28, the U.S. Food and Drug Administration (FDA) warned that the United States was applying rapid antigen detection methods to rapidly detect cases. Infected with COVID-19. Omicron superinfection variants may not be detected.

In the announcement, the FDA stated: “Preliminary data indicate that the antigen test detects Omicron variants, but the sensitivity may be reduced.” The warning is based on preliminary research conducted by the agency in cooperation with the National Institutes of Health RADx project.

The agency also warned clinical laboratory staff and healthcare providers that any molecular test designed to detect the virus may give false negative results. SARS-CoV-2, especially if there is a mutation in the viral genome evaluated by this test.

The FDA has authorized emergency use of 42 different antigen tests. However, a large number of mutations in the virus can reduce the performance of these tests, depending on the sequence of the mutation, the design of the test, and the prevalence of the mutation in the population.

[COVID-19 pandemic: The first death caused by the Omicron variant is recorded in the United States]

According to flight tracking website Flightaware, the United States has cancelled nearly 2,500 flights. Due to health officials’ concerns, as of December 28, the total number of delayed flights worldwide reached nearly 5,200. And the airline’s Omicron variant spread rapidly.

According to Flightradar24 data, American airlines and airports reported a total of 12,528 flight delays and 2,959 cancellations, accounting for nearly half of the world’s total number of single-day delayed/cancelled flights. . forward.

Since December 25th, flights to the United States have been interrupted by a large number of airline employees infected with the virus.

According to data from the US Centers for Disease Control and Prevention, the average number of people newly infected with COVID-19 every day in the past 7 days has now reached 122,297, an increase of 1.5% over the previous period. However, health authorities in the United States and around the world have acknowledged that the symptoms of COVID-19 infection caused by the Omicron variant are mild.

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