Respiratory pathogen transmission routes AEROSOL • Solid or liquid particles suspended in air or a gas that can remain aloft for a long time • 10μm particles can travel many meters • >100 μm can be inhaled into the nose • Think of aerosol movement as you would cigarette smoke movement DROPLET > 100μm - evaporate faster than they settle Aerosol Transmissible Pathogens: • Mycobacterium tuberculosis (tuberculosis; only transmits via respirable aerosols) • smallpox • measles virus (measles) • influenza virus (flu) • rhinovirus (common cold) • MERS-coronavirus (MERS) • SARS-CoV-2 (COVID-19) • SARS-Cov (SARS) • varicella-zoster virus (chicken pox) - Ian Mackay, PhD @MackayIM #Respiratory #pathogen #transmission #routes #aerosols #pathophysiology
