The Richmond and Henrico Health Districts will begin offering walk-up COVID-19 vaccinations at a second site – Virginia Union University in the city's Northside – on selected days this month beginning May 7. Anyone 16 or older who lives in Henrico or Richmond can walk into the vaccination site at VUU  May 7, 14 or 28 between 11 a.m. and 3 p.m. on those days and get a first dose of the Pfizer vaccine. Second doses will be  scheduled for each group exactly three weeks later at the same site. On Wednesday, Henrico and RHHD officials announced that six walk-up...