metallic-looking illustration of coronavirus structure
How the Omicron Subvariant BA.5 Became a Master of Disguise—and What It Means for the Current COVID-19 Surge
Several mechanisms contribute to the increased transmissibility of this SARS-CoV-2 variant.
How the Omicron Subvariant BA.5 Became a Master of Disguise—and What It Means for the Current COVID-19 Surge
How the Omicron Subvariant BA.5 Became a Master of Disguise—and What It Means for the Current COVID-19 Surge

Several mechanisms contribute to the increased transmissibility of this SARS-CoV-2 variant.

Several mechanisms contribute to the increased transmissibility of this SARS-CoV-2 variant.

COVID reinfection
Woman in face shield and blue gown taking cotton swab of patient's mouth while patient sits inside of car
What You Should Know About New Omicron Subvariants
Natalia Mesa | May 17, 2022
The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.
blue gloved hand putting vial of blood into centrifuge machine
Studies Identify Risk Factors for Long COVID
Natalia Mesa | Jan 26, 2022
Two recent papers provide insight into possible risk factors for developing the chronic condition, including autoantibodies and diabetes.
art+graph showing rise and fall of three different covid variants
Dissecting the Unusual Biology of the SARS-CoV-2 Delta Variant
Katarina Zimmer | Aug 9, 2021
An ability to build up higher concentrations of viral particles in people’s airways and mutations that might boost its ability to infect human cells could be what gives the Delta variant its evolutionary edge.
Past SARS-CoV-2 Infection Mostly Protects Survivors
Max Kozlov | Jan 14, 2021
A large study of UK healthcare workers finds that immunity after coronavirus infection lasts for months, but those with antibodies may still be able to carry and spread the virus upon reexposure.
More SARS-CoV-2 Reinfections Reported, But Still a Rare Event
Ashley Yeager | Oct 26, 2020
Repeat COVID-19 cases could offer clues about people’s immunity to the novel coronavirus and how to vaccinate against it.
Patients Reinfected with Coronavirus in Hong Kong, Europe
Lisa Winter | Aug 25, 2020
So far, there are three patients known to have been infected with SARS-CoV-2 twice, and in at least one case the second time around was asymptomatic.