In late 2020, several concerning SARS-CoV-2 variants emerged globally. They are believed to be more easily transmissible, and there is concern that some may reduce the effectiveness of antibody treatments and vaccines. An extensive genome sequencing program run by the Houston Methodist health system has identified all six of the currently identified SARS-CoV-2 variants in their patients. A new study appearing in The American Journal of Pathology, published by Elsevier, finds that the variants are widely spread across the Houston metropolitan area.