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David Larsen, associate professor of public health in Falk College, was interviewed for the WJLA-TV  (Washington) story “,” which aired nationwide. Larsen, who studies epidemiology, says that the new mutations of the COVID 19 virus has made it difficult for the government to give standard advice recently. “We’ve been learning like crazy. You know, science has been proceeding at a breakneck pace with this pandemic, so that understanding has changed,” says Larsen.