Health

France to investigate food additive that harmed rats

France ordered an inquiry on Friday after scientists reported that a food additive widely used in Europe to whiten toothpaste and chewing gum could cause precancerous lesions in rats.

Genetics

Omicron genetics and early transmission patterns characterized

The omicron variant of SARS-CoV-2 diverged from previous SARS-CoV-2 variants as a result of adaptive evolution, in which beneficial mutations are passed on to future generations through natural selection, rather than through ...

Immunology

Annual influenza vaccination does not prevent natural immunity

Earlier studies have suggested that having repeated annual influenza vaccination can prevent natural immunity to the virus, and potentially increase the susceptibility to influenza illness in the event of a pandemic, or when ...

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