It’s beginning to feel like a pandemic again at St. Louis City Hall. A letter issued yesterday by the City of St. Louis Health Department orders all city employees to mask up, effective today.  The mandate covers employees when they’re indoors and “when riding in city vehicles with one or more individuals” — presumably, that means one or more in addition to themselves. The health department’s letter cites a rising number of cases of not just COVID-19 but also other viruses, including the flu.