Dr. David Krause is the founder of Healthcare Consulting and Contracting (HC3). He is a Certified Industrial Hygienist and Toxicologist, with more than 28 years of experience in public health, occupational hazard assessments, and indoor air quality. He received his Doctorate in Environmental and Occupational Health and Master of Science in Public Health Toxicology from the University of South Florida, College of Public Health in Tampa, FL. David is a nationally recognized expert in risk assessment, workplace exposures to pathogens and hazardous chemicals, health care facilities, Legionnaires’ disease, combustion products, flame retardants, indoor air quality, and mold. From 2008 to 2011 Dr. Krause served as the State Toxicologist for the Florida Department of Health. He co-authored the 2009 Guidelines for the Surveillance, Investigation, and Control of Legionnaires’ Disease in Florida and the AIHA Guideline for the Recognition, Evaluation, and Control of Legionella in Building Water Systems, 2015 and the 2022 2nd edition. David is a member of the ACGIH Bioaerosols Committee and was a contributing author for the ACGIH 2021 White Paper on Engineering Controls for Bioaerosols in Non-Industrial/Non-Healthcare Settings. Dr. Krause is past chair of the AIHA Indoor Environmental Quality Committee and coordinated AIHA’s efforts to develop guidance on reducing the risk of spreading COVID-19 in the workplace through engineering controls and effective cleaning & disinfection.