1,039 cases of Brazilian coronavirus variant P.1 reported in Canada

 More...

Evidence for increased vaccine breakthrough rates of coronavirus variants of concern in BNT162b2 Pfizer-BionTech mRNA vaccinated individuals

Here, we performed a case-control study that examined whether BNT162b2 (Pfizer-BionTech) vaccinees with documented SARS-CoV-2 infection were more likely to become infected with B.1.1.7 or B.1.351 compared with unvaccinated individuals.  More...

CDC: SARS-CoV-2 Coronavirus Variant Classifications and Definitions including Variant of Interest (VOI), Variant of Concern (VOC) & Variant of High Consequence (VOHC)

Variant of High Consequence (VOHC): A variant of high consequence has clear evidence that prevention measures or medical countermeasures (MCMs) have significantly reduced effectiveness relative to previously circulating variants.  More...