Nigeria plans mass vaccination drive, considers booster shot

Nigeria will start a mass COVID-19 vaccination campaign later this week, aiming to inoculate half of its targeted population by the end of January, government officials said. Africa's most-populous country has a goal to vaccinate 111 million people to reach herd immunity. Under the initiative to start on Friday, 55 million doses or more than a million a day will be administered. The country has to date vaccinated only 2.9% of those eligible to get vaccines.