Since the beginning of the COVID-19 pandemic, there has been a lack of data to quantify the role played by breathing-out of pathogens in the spread of SARS-Cov-2 despite sufficient indication of its culpability. This work aims to establish the role of aerosol dispersion of SARS- Cov-2 virus and similar airborne pathogens on the spread […]
ANSI/ASHRAE/ASHE Addendum a to ANSI/ASHRAE/ASHE Standard 170-2017 Addendum a clarifies filtration requirements on a space-by-space basis. The filtration levels designated and their rational basis, are included in Informative Appendix C, Table C-1. In brief, this addendum.
How to operate air conditioning and ventilation systems to control spread of coronavirus disease (COVID-19) in Residences, Workspaces and Healthcare Facilities.
The purpose of this standard is to specify minimum ventilation rates and other measures intended to provide indoor air quality that is acceptable to human occupants and that minimizes adverse health effects. This standard is intended for regulatory application to new buildings, additions to existing buildings, and those changes to existing buildings that are identified
Many kindergarten through 12th grade (K-12) schools in the United States do not have good ventilation. This is a longstanding problem with demonstrably negative effects on student learning. We can and should act to fix this to ensure good indoor air quality for all students, educators, and school staff. During the COVID-19 pandemic, it is
The transmission modes of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remain controversial. At the emerging stage of the pandemic, many countries implemented high-level precautions, including airborne and contact precautions, to prevent the spread from patients to health care professionals (HCPs). An emerging understanding of SARS-CoV-2 epidemiology, which is primarily transmitted from person to person