The T-Cell Response to COVID-19 Infections and Immunity
Story Highlights Rapid decline of neutralizing antibodies following COVID-19 infection in some people have led to concerns that immunity to the SARS-CoV-2 virus Is temporary. However, several recent studies have shown a presence of virus-specific T-cells that remain, including among patients with mild or asymptomatic infections. Long-lasting immunity after recovery from COVID-19 infection may be […]
Tests for SARS-CoV-2 in South Korea Can’t Distinguish Virus from Viral Fragments
A team of South Korean infectious disease researchers has concluded there is no evidence that people can be reinfected with the SARS-CoV-2 virus. The researchers, led by Oh Myoung-don, MD, head of Seoul National University Hospital’s division of infectious diseases, believe that reports of patients who have recovered from COVID-19 and subsequently tested positive again […]
Blood Type May Affect Vulnerability to COVID-19
Story Highlights An international group of geneticists has compared DNA of patients hospitalized for severe COVID-19 infection with that of healthy volunteers and found six gene clusters that may provide insight into the wide range of responses to the virus. Results showed that patients with Type A blood appeared to have a greater susceptibility for […]
Misleading CDC Report on COVID-19 Testing Combines “Apples and Elephants”
The U.S. Centers for Disease Control and Prevention (CDC) acknowledged last week that it had lumped genetic tests that identify people with current COVID-19 infections together with serology (blood) antibody tests that measure whether someone has had the viral infection in the past.1 Combining the tally of the two tests overstates the country’s ability to […]
CDC Reduces COVID-19 Fatality Rate to 0.26 Percent
In a new document providing guidance for public health officials on COVID-19, the U.S. Centers for Disease Control and Prevention (CDC) estimates the infection fatality rate (IFR) for the disease at 0.4 percent, or about half the nearly one percent fatality rate the CDC estimated in March 2020 when it was predicting up to 1.7 […]
Will Coronavirus Mutations Delay COVID-19 Vaccines?
Story Highlights Seven different coronaviruses have been shown to cause disease in human beings, including common ones that tend to cause transient respiratory infections often referred to as the “common cold,” and others that cause more serious illnesses such as SERS, MERS and the current COVID-19. The virus that causes COVID-19 has been believed to […]