NAIROBI, Kenya—Moderna on Tuesday said it will make up to 110 million doses of its COVID-19 vaccine available to African countries. The announcement said Moderna is prepared to deliver the first 15 million doses by the end of this year, with 35 million in the first quarter of 2022 and up to 60 million in the second quarter. A White House official said the United States will defer delivery of about 33 million Moderna doses between December and February that were originally intended for the United States so that the African Union can buy them instead. The African Union special envoy on COVID-19, Strive Masiyiwa, told reporters that African countries are first purchasing 50 million Moderna vaccines with the option for 20 million a month in April, May and June, depending on the company’s performance in December. “We are in position to secure more vaccines from Moderna but want to …