Suspected or confirmed patients with contagious respiratory diseases (e.g. COVID-19, H1N1, SARS, MERS CoV and TB) are, usually transported in ambulance to/or between health care facilities. Person-to -person transmission of contagious respiratory infections, such as COVID -19, occur via inhalation of respiratory droplets produced when an infected person sneezes or coughs in air / or contact with contaminated fomites and inhalation of aerosols. These droplet nuclei may fall around the patients and contaminate the surfaces of the ambulance, which may cause cross transmission.