SARS-CoV-2 Genetic Variant May Be More Transmissible
SARS-CoV-2 Genetic Variant May Be More Transmissible
The so-called 614G mutation in the viral spike protein does not appear to cause more severe cases of COVID-19, but multiple studies indicate that it could be more contagious.
SARS-CoV-2 Genetic Variant May Be More Transmissible
SARS-CoV-2 Genetic Variant May Be More Transmissible

The so-called 614G mutation in the viral spike protein does not appear to cause more severe cases of COVID-19, but multiple studies indicate that it could be more contagious.

The so-called 614G mutation in the viral spike protein does not appear to cause more severe cases of COVID-19, but multiple studies indicate that it could be more contagious.

virus evolution
More SARS-CoV-2 Reinfections Reported, But Still a Rare Event
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.
Characteristics that Give Viruses Pandemic Potential
Characteristics that Give Viruses Pandemic Potential
Anthony King | Aug 17, 2020
A handful of factors tip the scales in making a virus more likely to trigger a disruptive global outbreak. Right now, scientists tend to rank influenza, coronaviruses, and Nipah virus as the biggest threats.
Polio Vaccination Causes More Infections than Wild Virus
Polio Vaccination Causes More Infections than Wild Virus
Jef Akst | Nov 25, 2019
In rare instances, the live virus in oral polio vaccines can mutate and become infectious, causing new outbreaks.
HIV-1 Genome Extracted from 1966 Tissue Sample
HIV-1 Genome Extracted from 1966 Tissue Sample
Nicoletta Lanese | Aug 19, 2019
Scientists spent five years reconstructing what is now the oldest HIV-1 genome yet recovered.
Image of the Day: Ringspots
Image of the Day: Ringspots
Carolyn Wilke | Jan 25, 2019
Tiny insects carry the tomato spotted wilt virus, which causes infected plants to develop discolored ring-shape blotches.
Ancient Humans Had Hepatitis B
Ancient Humans Had Hepatitis B
Abby Olena | May 9, 2018
Analyses of more than 300 ancient human genomes show that Hepatitis B virus has infected humans for at least 4,500 years and has much older origins than modern viral genomes would suggest.
Pathway to Polio Virulence Revealed
Pathway to Polio Virulence Revealed
Ashley P. Taylor | Mar 23, 2017
Using epidemiological and laboratory data, scientists have mapped out a sequence of mutations through which the attenuated oral polio vaccine reverts to a virulent virus.
Evolution of H7N9
Evolution of H7N9
Erin Weeks | Sep 20, 2013
Genetic diversity helped avian influenza A viruses make the leap from birds to humans, researchers report.
Catching the Cold
Catching the Cold
Fred Adler | Feb 1, 2013
Tracking the genetic diversity and evolution of rhinoviruses can lead to a better understanding of viral evolution, the common cold, and more dangerous infections.