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10.1136/jech-2020-214635 http://scihub22266oqcxt.onion/10.1136/jech-2020-214635 32855261!7788477!32855261     free     free     free Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       J+Epidemiol+Community+Health 2021 ; 75 (1): 84-87 Nephropedia Template TP {{tp|p=32855261|t=2021. Role of presymptomatic transmission of COVID-19: evidence from Beijing, China |pdf=|usr=}}{{32855261}} gab.com Text Role of presymptomatic transmission of COVID-19: evidence from Beijing, China JO: J Epidemiol Community Health http://www.kidney.de/pget.php?&tw=1&pmid=32855261 #FOAvip BACKGROUND: The presymptomatic transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been documented in limited clusters, and it is predicted through modelling. However, there is a lack of evidence from observations with a large sample size. METHODS: We used data from meticulous contact tracing of people exposed to cases of SARS-CoV-2 to estimate the proportion of cases that result from the presymptomatic transmission of the virus in Beijing during January 2020 and February 2020. RESULTS: The results showed that presymptomatic transmission occurred in at least 15% of 100 secondary COVID-19 cases. The earliest presymptomatic contact event occurred 5 days prior to the index case's onset of symptoms, and this occurred in two clusters. CONCLUSIONS: The finding suggested that the contact tracing period should be earlier and highlighted the importance of preventing transmission opportunities well before the onset of symptoms. Twit Text FOAVip Role of presymptomatic transmission of COVID-19: evidence from Beijing, China ????J Epidemiol Community Health http://www.kidney.de/pget.php?&tw=1&pmid=32855261 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=32855261 #FOAvip English Wikipedia <ref>{{Cite pmid|32855261}}</ref> Role of presymptomatic transmission of COVID-19: evidence from Beijing, China #MMPMID32855261 Zhang Y; Muscatello D; Tian Y; Chen Y; Li S; Duan W; Ma C; Sun Y; Wu S; Ge L; Yang P; Jia L; Wang Q; MacIntyre CR J Epidemiol Community Health 2021[Jan]; 75 (1): 84-87 PMID32855261show ga BACKGROUND: The presymptomatic transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been documented in limited clusters, and it is predicted through modelling. However, there is a lack of evidence from observations with a large sample size. METHODS: We used data from meticulous contact tracing of people exposed to cases of SARS-CoV-2 to estimate the proportion of cases that result from the presymptomatic transmission of the virus in Beijing during January 2020 and February 2020. RESULTS: The results showed that presymptomatic transmission occurred in at least 15% of 100 secondary COVID-19 cases. The earliest presymptomatic contact event occurred 5 days prior to the index case's onset of symptoms, and this occurred in two clusters. CONCLUSIONS: The finding suggested that the contact tracing period should be earlier and highlighted the importance of preventing transmission opportunities well before the onset of symptoms. |*Disease Outbreaks[MESH] |Adult[MESH] |Asymptomatic Diseases[MESH] |Asymptomatic Infections/*epidemiology[MESH] |COVID-19 Nucleic Acid Testing[MESH] |COVID-19/diagnosis/epidemiology/*transmission[MESH] |Carrier State/epidemiology/*virology[MESH] |China/epidemiology[MESH] |Contact Tracing[MESH] |Female[MESH] |Humans[MESH] |Male[MESH] |Middle Aged[MESH]Role of presymptomatic transmission of COVID-19: evidence from Beijing(epmc).pdf DeepDyve Pubget Overpricing