Dynamics and Viability of Airborne Respiratory Syncytial Virus under Various Indoor Air Conditions

• DOI: 10.1021/acs.est.3c03455
• Publication Date: 2023-12-12T13:01:54Z
• Authors: Sadegh Niazi; Robert Groth; Lidia Morawska; Kirsten Spann; Zoran Ristovski
• Keywords: Hysteresis; Particle (ecology)

The factors governing the viability of airborne viruses embedded within respiratory particles are not well understood. This study aimed to investigate relative humidity (RH)-dependent syncytial virus (RSV) in simulated suspended various indoor air conditions. We tested RSV three static conditions, including sub-hysteresis (RH < 39%), hysteresis (39% RH 65%), and super-hysteresis > 65%) as dynamic transitions between conditions were → hysteresis, hysteresis. found that after 45 min particle aging sub-hysteresis, was 0.72% ± 0.06%, 0.03% 0.006%, 0.27% 0.008%, respectively. After decreased for remained a liquid (deliquesced) state during when compared with solid (effloresced) state. deliquesced is consistent prolonged exposure elevated aqueous solutes. These results represent first measurements survival over time, equal low, intermediate, high RHs at 5 15 V-shaped curve min.