https://www.scientificamerican.com/article/experts-answer-the-biggest-covid-vaccine-questions1/ > As part of President Biden’s push to get at least 100 million COVID-19 vaccine doses into the arms of people in the U.S. by the end of April, the White House announced February 9 it will begin shipping doses to 1,300 federally qualified community health centers. These organizations primarily serve patients from Black and brown communities who fall below the poverty line. On Tuesday the administration announced plans to double the number of vaccines it is sending to retail pharmacies to two million doses. The efforts add to existing distribution to hospitals, state and municipal agencies. But the lack of informed messaging from the Trump administration, combined with the range of different COVID vaccines, the emergence of new coronavirus variants, and inconsistent state and municipal rollout plans, have caused confusion and driven vaccine hesitancy. Scientific American asked Namandjé Bumpus, a pharmacologist at Johns Hopkins Medicine in Baltimore, and Ashley Lauren St. John, an immunologist at Duke-NUS Medical School in Singapore to answer some of the biggest questions about the currently available COVID vaccines. > [Their answers have been combined and edited for clarity and length.]