COVID & Hygiene Resources July 8, 2022 September 9, 2022 / By RICHARD W GILPIN LLC Building opening guide, including Legionnaires’ disease prevention. Consult GTS , CDC , or ASHRAE . Johns Hopkins Coronavirus COVID-19 Map – JHU Center for Systems Science and Engineering (CSSE) Johns Hopkins University & Medicine – COVID-19 Data Visualization Center. Johns Hopkins University & Medicine – Coronavirus Resource Center. CDC – Water, Sanitation, and Environmentally Related Hygiene. CDC – COVID Website. ASM – Latest COVID-19 Research Articles. ASM – COVID-19 Research Registry.