Coronavirus Cases Plummet When PCR Tests Are Adjusted

Coronavirus Cases Plummet When PCR Tests Are Adjusted

Health experts now say that PCR testing for SARS-CoV-2, the virus associated with the illness COVID-19, is too sensitive and needs to be adjusted to rule out people who have insignificant amounts of the virus in their system.1 The test’s threshold is so high that it detects people with the live virus as well as […]

WHO Issues New Guidance for Determining PCR Test Results

WHO Issues New Guidance for Determining PCR Test Results

There is a scene in the 1982 movie Star Trek II: The Wrath of Khan, in which Captain Kirk is asked by Lieutenant Saavik, “The Kobyashi Maru, sir. … On the test, sir, will you tell me what you did? I’d really like to know.” Dr. McCoy interjects: “Lieutenant, you are looking at the only Star […]

Understanding PCR Tests for Coronavirus

Understanding PCR Tests for Coronavirus

Opinion | From the beginning of the COVID-19 pandemic, the clarion call has been to test, test and test some more. However, right from the start, serious questions arose about the tests being used to diagnose this infection, and questions have only multiplied since then. Positive reverse transcription polymerase chain reaction (RT-PCR) tests have been […]

CDC Shortens COVID-19 Quarantine Period to Seven Days

CDC Shortens COVID-19 Quarantine Period to Seven Days

The U.S. Centers for Disease Control and Prevention (CDC) has revised its quarantine guidelines for people who may have been exposed to the SARS-CoV-2 virus.1 Since the COVID-19 pandemic declaration last winter, the agency has recommended a 14-day quarantine period that was based on estimates of the upper range of the incubation period for SARS-CoV-2 […]