As more businesses and schools move to reopen and progress continues with the vaccination program, health and safety measures remain necessary to not only reduce the spread of Covid-19, but also to address health concerns stemming from buildings that have been shut down for extended periods of time (e.g., waterborne pathogens Legionella and Pseudomonas in stagnant water systems).   AIHA, the association for scientists and professionals committed to preserving and ensuring occupational and enviro...