President Biden this week said the U.S. will have enough COVID-19 vaccines for all American adults by the end of May, two months earlier than he had previously stated and after regulators authorized the one-shot Johnson & Johnson (Janssen) vaccine and Merck & Co. agreed to help produce it. Mr. Biden also called on states to give priority to teachers, school staff and child-care workers for vaccinations, as virtual learning continues for many students across the country. Pennsylvania is among the states that have responded to the call to do so (see related article under Harrisburg Update).
