Henry Miller LTE on Coronavirus Testing in the Wall Street Journal
The excellent and informative articles “Want a Test? Depends Where You Live” (The Coronavirus Pandemic, March 12) and “Don’t Jump to Conclusions” (Heard on the Street, March 11) about testing for the new coronavirus didn’t cover some important nuances. The test kits in use in the U.S. described in the articles detect viral genetic material—RNA, in the case of coronaviruses—which can be infectious material or noninfectious fragments. Once the patient has recovered and the RNA has been cleared, the tests will...