The Delta variant is up to 60 percent more contagious than other variants, The Washington Post reported.

The Delta variant is up to 60 percent more contagious than other variants, The Washington Post reported. In Massachusetts, Northeastern University epidemiologist Samuel Scarpino warned this past weekend that the state's goal of vaccinating 4.1 million residents will not be enough to fend off the spread of the variant. He urged the state to aim to vaccinate at least 80 percent of the population.