This year's flu vaccine stopped many of the worst cases, CDC says

This season’s flu vaccine was particularly well-suited for children, the U.S. Centers for Disease Control and Prevention said, preventing many of the most severe infections. The shot overall prevented about 45% of infections during the current flu outbreak, the CDC said in a report. The 2019-2020 flu season started earlier than normal and appears to be lingering longer, after a second strain of the virus began circulating late in the season.