Training Manual for Prevention of Covid-19 Disease among Hospital Personnel

Training Manual for Prevention of Covid-19 Disease among Hospital Personnel

Ali Poormohammadi, Ghasem Azarian

Dear EditorIn recent days, coronavirus disease (COVID-19) as a viral infection caused by the SARS-Cov-2 virus has become a pandemic disease and has created critical conditions worldwide [1]. According to previous studies on pathogenic viruses associated with acute respiratory distress syndrome, each virus has a specific virulence dose, which it is about 2×103-3×103 viral particles for the influenza virus. Given the emergence of the SARSCov-2 virus and no complete information on its virulence dose, it is clear that its very low virulence dose can cause its rapid spread. Regarding the effectiveness of the use of simple cloth filter masks, it can be stated that these masks provide relative safety depending on their type and structure [2]. In this regard, Blachere et al., reported that in multi-stage sampling of influenza viruses, 46% of the viruscontaining particles are trapped in the first filter layer of the sampler with a diameter of 4 microns, 49% of the viral particles are trapped in the second layer filter with a diameter 1 to 4 microns and only 1% of viruses are trapped in the last layer filter with a diameter of about 1 micron [2-4]. Coughing, sneezing, speaking, and breathing create a cloud of particles in the air with varying diameters ranging from a few millimeters to

2020

coronavirus, hospital personnel, Training Manual, COVID-19

DOI: 10.29252/jech.7.2.69

Journal of Education and Community Health

Hamadan University of Medical Sciences

Public aspects of medicine