Investigation of hospital indoor air quality for the presence of SARS-Cov-2
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RESEARCH ARTICLE
Investigation of hospital indoor air quality for the presence of SARS-Cov-2 Hossein Masoumbeigi 1 & Ghader Ghanizadeh 2 Ruhollah Dorostkar Sari 6 & Mehdi Tat 6
&
Reza Yousefi Arfaei 3 & Soleyman Heydari 4 & Hassan Goodarzi 5 &
Received: 29 April 2020 / Accepted: 16 September 2020 # Springer Nature Switzerland AG 2020
Abstract Purpose Unidentified dynamics for the causative agent of COVID-19, SARS-Cov-2, led to the critical public health issue. Suspicion for the airborne potential of SARS-Cov-2 is an important problem for its transmission and relevant epidemics. This research investigated hospital indoor air quality to SARS-Cov-2 occurrence and determination its air born potential. Methods The site study was a referral hospital with 630 beds for admitting of COVID-19 patients. Air sampling was done (n = 31) on selected wards including Emergency 1, Emergency 2, bedridden (4-B, 10-D), ICU 2, ICU 3, CTSCAN, and laundry. The average temperature and relative humidities were 22 ± 1 °C and 43 percent respectively. All glass impinger used for sampling in which the sampling pumps capacities were 5 and 40 L.min− 1. Sampling duration time was 20 and 15 minutes and 100 to 1000 L of air were gathered. All parts of the sampling equipment were completely disinfected by hot water, ethanol (70%), chlorine solution (1000 ppm), hot water (70 °C for 1 min) and washed with distilled water. The transmitting media (7 ml) was injected into impinger and residual of this media (2 ml) was sent to the virology laboratory within 2 hours and preserved on refrigerator < 4 °C. Analysis of samples was performed by RT-PCR and repeated for accuracy control. Results All of the samples were negative for SARS-Cov-2 occurrence. These results showed that SARS-Cov-2 had not airborne potential in this hospital. Conclusions Although SARS-Cov-2 similar to the SARS virus but, SARS-Cov-2 is not an airborne virus. Keywords Airborne . COVID-19 . Hospital . Indoor air quality . SARS-Cov-2
Introduction * Ghader Ghanizadeh [email protected] 1
Health Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
2
Health Management Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
3
Students’ Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran
4
Trauma Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
5
Trauma Research Center, Emergency Deptment, Baqiyatallah University of Medical Sciences, Tehran, Iran
6
Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
Induced respiratory illnesses by viral infections are the most frequent causes of morbidity and mortality worldwide [1]. SARS-CoV-2 is a member of the coronavirus family which temporarily named as SARS-Cov-2 and the causative agent of COVID-19 [2]. The COVID-19 as an acute respiratory viral disease emerged in the last days of 2019 and on March 11, 2020, WHO declared its pandemic scale [3, 4]. The dynamics of SARS-Cov-2 are now unkn
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