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10.1080/15459624.2020.1784427 http://scihub22266oqcxt.onion/10.1080/15459624.2020.1784427 32643585!ä!32643585 Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=32643585&cmd=llinks): Failed to open stream: HTTP request failed! 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Relative contributions of transmission routes for COVID-19 among healthcare personnel providing patient care |pdf=|usr=}}{{32643585}} gab.com Text Relative contributions of transmission routes for COVID-19 among healthcare personnel providing patient care JO: J Occup Environ Hyg http://www.kidney.de/pget.php?&tw=1&pmid=32643585 #FOAvip The routes of COVID-19 transmission to healthcare personnel from infected patients is the subject of debate, but is critical to the selection of personal protective equipment. The objective of this paper was to explore the contributions of three transmission routes-contact, droplet, and inhalation-to the risk of occupationally acquired COVID-19 infection among healthcare personnel (HCP). The method was quantitative microbial risk assessment, and an exposure model, where possible model parameters were based on data specific to the SARS-CoV-2 virus when available. The key finding was that droplet and inhalation transmission routes predominate over the contact route, contributing 35%, 57%, and 8.2% of the probability of infection, on average, without use of personal protective equipment. On average, 80% of inhalation exposure occurs when HCP are near patients. The relative contribution of droplet and inhalation depends upon the emission of SARS-CoV-2 in respirable particles (<10 microm) through exhaled breath, and inhalation becomes predominant, on average, when emission exceeds five gene copies per min. The predicted concentration of SARS-CoV-2 in the air of the patient room is low (< 1 gene copy per m(3) on average), and likely below the limit of quantification for many air sampling methods. The findings demonstrate the value of respiratory protection for HCP, and that field sampling may not be sensitive enough to verify the contribution of SARS-CoV-2 inhalation to the risk of occupationally acquired COVID-19 infection among healthcare personnel. The emission and infectivity of SARS-CoV-2 in respiratory droplets of different sizes is a critical knowledge gap for understanding and controlling COVID-19 transmission. Twit Text FOAVip Relative contributions of transmission routes for COVID-19 among healthcare personnel providing patient care ????J Occup Environ Hyg http://www.kidney.de/pget.php?&tw=1&pmid=32643585 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=32643585 #FOAvip English Wikipedia <ref>{{Cite pmid|32643585}}</ref> Relative contributions of transmission routes for COVID-19 among healthcare personnel providing patient care #MMPMID32643585 Jones RM J Occup Environ Hyg 2020[Sep]; 17 (9): 408-415 PMID32643585show ga The routes of COVID-19 transmission to healthcare personnel from infected patients is the subject of debate, but is critical to the selection of personal protective equipment. The objective of this paper was to explore the contributions of three transmission routes-contact, droplet, and inhalation-to the risk of occupationally acquired COVID-19 infection among healthcare personnel (HCP). The method was quantitative microbial risk assessment, and an exposure model, where possible model parameters were based on data specific to the SARS-CoV-2 virus when available. The key finding was that droplet and inhalation transmission routes predominate over the contact route, contributing 35%, 57%, and 8.2% of the probability of infection, on average, without use of personal protective equipment. On average, 80% of inhalation exposure occurs when HCP are near patients. The relative contribution of droplet and inhalation depends upon the emission of SARS-CoV-2 in respirable particles (<10 microm) through exhaled breath, and inhalation becomes predominant, on average, when emission exceeds five gene copies per min. The predicted concentration of SARS-CoV-2 in the air of the patient room is low (< 1 gene copy per m(3) on average), and likely below the limit of quantification for many air sampling methods. The findings demonstrate the value of respiratory protection for HCP, and that field sampling may not be sensitive enough to verify the contribution of SARS-CoV-2 inhalation to the risk of occupationally acquired COVID-19 infection among healthcare personnel. The emission and infectivity of SARS-CoV-2 in respiratory droplets of different sizes is a critical knowledge gap for understanding and controlling COVID-19 transmission. |*Health Personnel[MESH] |Animals[MESH] |Betacoronavirus[MESH] |COVID-19[MESH] |Coronavirus Infections/*epidemiology/*transmission[MESH] |Humans[MESH] |Infection Control/instrumentation[MESH] |Infectious Disease Transmission, Patient-to-Professional/*prevention & control[MESH] |Markov Chains[MESH] |Mice[MESH] |Models, Theoretical[MESH] |Pandemics[MESH] |Personal Protective Equipment/*statistics & numerical data[MESH] |Pneumonia, Viral/*epidemiology/*transmission[MESH] |Respiratory Protective Devices/*statistics & numerical data[MESH]Relative contributions of transmission routes for COVID-19 among healt(epmc).pdf DeepDyve Pubget Overpricing