The Montpelier Bridge A CVS Pharmacist administers a COVID-19 vaccine in Fall River, Mass.. Scott Eisen/CVS Health via AP Images. RANDOLPH â Vermonters should be cautious but not worry about the more contagious Delta variant. Thatâs the message from Gifford Health Care Chief Medical Officer, Dr. Josh White. Delta is causing a rise in cases throughout the world, but according to Dr. White, these COVID-19 variants were expected. âViruses mutate, so they can spread better,â Dr. White said. âDelta seems to reproduce much faster, which means when a person coughs or sneezes, thereâs a lot more virus in it, so itâs much easier to transmit.â