Tamil Nadu added 448 new cases and seven deaths to its Covid registry on Friday, when 20,466 people were vaccinated. Among them, 5,621who were administered the second dose of the vaccine. The state’s Covid-19 death toll is 12,451, the second highest in the country after Maharashtra (51,669). There are 4,147 patients undergoing treatment in TN, almost 25% less compared to January 19. On Friday, two more UK returnees from Madurai tested positive for the virus. So far, 56 returnees and their contacts have tested positive and 48 of them have recovered.