Vaccination, previous infection, protect against gamma variant in animal model
MADISON – In early January 2021, travelers returning to Tokyo, Japan, from Amazonas, Brazil, were screened for COVID-19 at the airport. A few days later, the National Institute of Infectious Disease of Japan announced that the travelers had returned with a new variant of the SARS-CoV-2 virus. That variant, known as gamma, or P.1, led…