1:59gma3March 2, 2021How long after receiving a COVID-19 vaccine will it be effective?Dr. Jen Ashton answers your coronavirus questions.Up Next in newsTwitter cracks down on COVID-19 vaccine misinformationMarch 2, 2021The 2024 total eclipse seen across North AmericaApril 8, 2024Sandra Day O'Connor, 1st woman on Supreme Court, dies at 93December 1, 2023