Can cover distance beyond 2 metres
Authorities have come to accept what many researchers have argued for over a year: The coronavirus can spread through the air.
That new acceptance, by the World Health Organization and the U.S. Centers for Disease Control and Prevention, comes with concrete implications: Scientists are calling for ventilation systems to be overhauled like public water supplies were in the 1800s after fetid pipes were found to harbor cholera.
The study’s authors, comprising 39 scientists from 14 countries, are demanding universal recognition that infections can be prevented by improving indoor ventilation systems. They want the WHO to extend its indoor air quality guidelines to cover airborne pathogens, and for building ventilation standards to include higher airflow, filtration and disinfection rates, and monitors that enable the public to gauge the quality of the air they’re breathing.
This is a wakeup call for all facilities to bank on more than just masks and physical distancing to control Covid transmission, and invest in overhauling their HVAC systems.
