NIH study finds coronavirus infects mouth cells, saliva

Researchers from the National Institutes of Health found evidence to suggest that the novel coronavirus is able to replicate and infect mouth tissue, spreading to a person’s saliva and eventually infecting a patient’s lungs when swallowed.

CDC says more contagious UK COVID-19 variant is now the dominant strain in the US

The CDC says a new more contagious variant of the coronavirus is now the dominant strain circulating in the US. The B.1.1.7 variant, which surfaced in the United Kingdom last fall is more transmissible and may cause more severe disease. US health officials say the vaccines could stop the new strain, if the US can get many more Americans protected.