LyrArc Article Gist
Quidel Corp. gets the first FDA approval of an antigen test which tests for the disease itself. Quidel is a company specializing in tests for the flu and infectious diseases. It uses an older technology to detect the disease. Quidel CEO Douglas Bryant, says he will ramp up the manufacturing of the test to go from 200,000 tests a week in the week of May 11, to more than a million a week in several weeks. The current testing technology has several shortcomings. The most common test so far is the PCR test which magnifies virus particles to ease their detection. It is cumbersome technology because it takes time to run the test and analyze the results. The new antigen tests have several advantages. They have a simpler design, are easier to process, and can be produced at lower prices because of the simpler design. They are designed to identify the virus in people in real time, to process results quickly in minutes in Quidel's Sofia analyzers. Because of the simple design and proven technology it can be scaled up quickly to do millions of tests.  The U.S. currently has the problem that it is not able to do enough testing- about twice the current rate is needed to do what health experts recommend. A minimum of 4 million tests weekly is needed and followed up with contact tracing to make it safe for people to go back to work, says Ashish Jha of the Harvard Global Health Institute.   The U.S.   ...

LyrArc Article Gist
As Delhi sees a decline in cases of coronavirus around July 16, it is not clear whether this is a result of more use of less reliable antigen tests where results are produced immediately. From 3000 cases in last week of June cases per day dropped to 1200 to 1600. Mumbai is also seeing a slow decline with other parts of Maharashtra state seeing spikes. Tamilnadu is seeing a gradual decline. Andhra Pradesh and Telengana, Karnataka see a climb in cases.

The federal government requires antigen tests showing negative to be followed up with the more reliable RT-PCR direct test, which takes hours to give results.