The highly infectious COVID-19 Delta variant is spurring global surges, sparking concerns among public health officials. In the U.S., more than 80 percent of new cases are from the Delta variant. What makes this variant so contagious? How protective are current vaccines? What’s the latest on practices such as masking and social distancing? Join Harvard Chan epidemiologist William Hanage and The World’s Elana Gordon for this online Q&A.
Elana Gordon, Reporter and Producer, The World
William Hanage, Associate Professor of Epidemiology, Harvard T.H. Chan School of Public Health