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Article ; Online: SARS-CoV-2 Virus Culture and Subgenomic RNA for Respiratory Specimens from Patients with Mild Coronavirus Disease.

Perera, Ranawaka A P M / Tso, Eugene / Tsang, Owen T Y / Tsang, Dominic N C / Fung, Kitty / Leung, Yonna W Y / Chin, Alex W H / Chu, Daniel K W / Cheng, Samuel M S / Poon, Leo L M / Chuang, Vivien W M / Peiris, Malik

Emerging infectious diseases

2020 Volume 26, Issue 11, Page(s) 2701–2704

Abstract: We investigated 68 respiratory specimens from 35 coronavirus disease patients in Hong Kong, of whom 32 had mild disease. We found that severe acute respiratory syndrome coronavirus 2 and subgenomic RNA were rarely detectable beyond 8 days after onset of ... ...

Abstract	We investigated 68 respiratory specimens from 35 coronavirus disease patients in Hong Kong, of whom 32 had mild disease. We found that severe acute respiratory syndrome coronavirus 2 and subgenomic RNA were rarely detectable beyond 8 days after onset of illness. However, virus RNA was detectable for many weeks by reverse transcription PCR.
MeSH term(s)	Adult ; Aged ; Betacoronavirus/genetics ; COVID-19 ; Coronavirus Infections/virology ; Female ; Hong Kong ; Humans ; Male ; Middle Aged ; Pandemics ; Pneumonia, Viral/virology ; RNA, Viral/analysis ; Respiratory System/virology ; Reverse Transcriptase Polymerase Chain Reaction ; SARS-CoV-2 ; Severity of Illness Index
Chemical Substances	RNA, Viral
Keywords	covid19
Language	English
Publishing date	2020-08-04
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	1380686-5
ISSN	1080-6059 ; 1080-6040
ISSN (online)	1080-6059
ISSN	1080-6040
DOI	10.3201/eid2611.203219
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Absence of nosocomial transmission of coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in the prepandemic phase in Hong Kong.

Cheng, Vincent C C / Wong, Shuk-Ching / Chuang, Vivien W M / So, Simon Y C / Chen, Jonathan H K / Sridhar, Siddharth / To, Kelvin K W / Chan, Jasper F W / Hung, Ivan F N / Ho, Pak-Leung / Yuen, Kwok-Yung

American journal of infection control

2020 Volume 48, Issue 8, Page(s) 890–896

Abstract: Background: To describe the infection control strategy to achieve zero nosocomial transmission of symptomatic coronavirus disease (COVID-19) due to SARS-CoV-2 during the prepandemic phase (the first 72 days after announcement of pneumonia cases in Wuhan) ...

Abstract	Background: To describe the infection control strategy to achieve zero nosocomial transmission of symptomatic coronavirus disease (COVID-19) due to SARS-CoV-2 during the prepandemic phase (the first 72 days after announcement of pneumonia cases in Wuhan) in Hong Kong. Methods: Administrative support with the aim of zero nosocomial transmission by reducing elective clinical services, decanting wards, mobilizing isolation facilities, providing adequate personal protective equipment, coordinating laboratory network for rapid molecular diagnosis under 4-tier active surveillance for hospitalized patients and outpatients, and organizing staff forum and training was implemented under the framework of preparedness plan in Hospital Authority. The trend of SARS-CoV-2 in the first 72 days was compared with that of SARS-CoV 2003. Results: Up to day 72 of the epidemic, 130 (0.40%) of 32,443 patients being screened confirmed to have SARS-CoV-2 by reverse transcription polymerase chain reaction. Compared with SARS outbreak in 2003, the SARS-CoV-2 case load constituted 8.9% (130 SARS-CoV-2/1458 SARS-CoV) of SARS-CoV infected cases at day 72 of the outbreak. The incidences of nosocomial acquisition of SARS-CoV per 1,000 SARS-patient-day and per 100 SARS-patient-admission were 7.9 and 16.9, respectively, which were significantly higher than the corresponding incidences of SARS-CoV-2 (zero infection, P <.001). Conclusions: Administrative support to infection control could minimize the risk of nosocomial transmission of SARS-CoV-2.
MeSH term(s)	Adolescent ; Adult ; Aged ; Aged, 80 and over ; Betacoronavirus/pathogenicity ; COVID-19 ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Coronavirus Infections/transmission ; Cross Infection/epidemiology ; Cross Infection/prevention & control ; Cross Infection/transmission ; Disease Outbreaks/prevention & control ; Female ; Hong Kong/epidemiology ; Humans ; Infection Control/methods ; Male ; Middle Aged ; Pandemics/prevention & control ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; Pneumonia, Viral/transmission ; SARS-CoV-2 ; Young Adult
Keywords	covid19
Language	English
Publishing date	2020-05-24
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	392362-9
ISSN	1527-3296 ; 0196-6553
ISSN (online)	1527-3296
ISSN	0196-6553
DOI	10.1016/j.ajic.2020.05.018
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Article ; Online: Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong.

Cheng, Vincent C C / Wong, Shuk-Ching / Chen, Jonathan H K / Yip, Cyril C Y / Chuang, Vivien W M / Tsang, Owen T Y / Sridhar, Siddharth / Chan, Jasper F W / Ho, Pak-Leung / Yuen, Kwok-Yung

Infection control and hospital epidemiology

2020 Volume 41, Issue 5, Page(s) 493–498

Abstract: Objective: To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, ... ...

Abstract	Objective: To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, on December 31, 2019 (day 1) in Hong Kong. Methods: A bundled approach of active and enhanced laboratory surveillance, early airborne infection isolation, rapid molecular diagnostic testing, and contact tracing for healthcare workers (HCWs) with unprotected exposure in the hospitals was implemented. Epidemiological characteristics of confirmed cases, environmental samples, and air samples were collected and analyzed. Results: From day 1 to day 42, 42 of 1,275 patients (3.3%) fulfilling active (n = 29) and enhanced laboratory surveillance (n = 13) were confirmed to have the SARS-CoV-2 infection. The number of locally acquired case significantly increased from 1 of 13 confirmed cases (7.7%, day 22 to day 32) to 27 of 29 confirmed cases (93.1%, day 33 to day 42; P < .001). Among them, 28 patients (66.6%) came from 8 family clusters. Of 413 HCWs caring for these confirmed cases, 11 (2.7%) had unprotected exposure requiring quarantine for 14 days. None of these was infected, and nosocomial transmission of SARS-CoV-2 was not observed. Environmental surveillance was performed in the room of a patient with viral load of 3.3 × 106 copies/mL (pooled nasopharyngeal and throat swabs) and 5.9 × 106 copies/mL (saliva), respectively. SARS-CoV-2 was identified in 1 of 13 environmental samples (7.7%) but not in 8 air samples collected at a distance of 10 cm from the patient's chin with or without wearing a surgical mask. Conclusion: Appropriate hospital infection control measures was able to prevent nosocomial transmission of SARS-CoV-2.
MeSH term(s)	Betacoronavirus ; COVID-19 ; COVID-19 Testing ; Clinical Laboratory Techniques ; Coronavirus Infections/diagnosis ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Coronavirus Infections/transmission ; Health Personnel ; Hong Kong ; Humans ; Infection Control/methods ; Molecular Diagnostic Techniques ; Pandemics/prevention & control ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; Pneumonia, Viral/transmission ; SARS-CoV-2 ; Time Factors
Keywords	covid19
Language	English
Publishing date	2020-03-05
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	639378-0
ISSN	1559-6834 ; 0195-9417 ; 0899-823X
ISSN (online)	1559-6834
ISSN	0195-9417 ; 0899-823X
DOI	10.1017/ice.2020.58
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Article ; Online: Absence of nosocomial transmission of coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in the prepandemic phase in Hong Kong

Cheng, Vincent C.C. / Wong, Shuk-Ching / Chuang, Vivien W.M. / So, Simon Y.C. / Chen, Jonathan H.K. / Sridhar, Siddharth / To, Kelvin K.W. / Chan, Jasper F.W. / Hung, Ivan F.N. / Ho, Pak-Leung / Yuen, Kwok-Yung

American Journal of Infection Control

2020 Volume 48, Issue 8, Page(s) 890–896

Keywords	Public Health, Environmental and Occupational Health ; Health Policy ; Epidemiology ; Infectious Diseases ; covid19
Language	English
Publisher	Elsevier BV
Publishing country	us
Document type	Article ; Online
ZDB-ID	392362-9
ISSN	1527-3296 ; 0196-6553
ISSN (online)	1527-3296
ISSN	0196-6553
DOI	10.1016/j.ajic.2020.05.018
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Polyclonal Burkholderia cepacia Complex Outbreak in Peritoneal Dialysis Patients Caused by Contaminated Aqueous Chlorhexidine.

Wong, Sally C Y / Wong, Shuk-Ching / Chen, Jonathan H K / Poon, Rosana W S / Hung, Derek L L / Chiu, Kelvin H Y / So, Simon Y C / Leung, Wing Shan / Chan, Tak Mao / Yap, Desmond Y H / Chuang, Vivien W M / Yuen, Kwok-Yung / Cheng, Vincent C C

Emerging infectious diseases

2020 Volume 26, Issue 9, Page(s) 1987–1997

Abstract: Whether Burkholderia cepacia complex should be an objectionable organism in antiseptic solutions with acceptable total bacterial counts is controversial. By using next-generation sequencing, we documented a polyclonal B. cepacia complex outbreak ... ...

Abstract	Whether Burkholderia cepacia complex should be an objectionable organism in antiseptic solutions with acceptable total bacterial counts is controversial. By using next-generation sequencing, we documented a polyclonal B. cepacia complex outbreak affecting peritoneal dialysis patients in Hong Kong that was caused by contaminated chlorhexidine solutions. Epidemiologic investigations at a manufacturing site identified a semiautomated packaging machine as the probable source of contamination in some of the brands. Use of whole-genome sequencing differentiated the isolates into 3 brand-specific clonal types. Changes in exit site care recommendations, rapid recall of affected products, and tightening of regulatory control for chlorhexidine-containing skin antiseptics could prevent future similar outbreaks. Environmental opportunistic pathogens, including B. cepacia complex, might be included in regular surveillance as indicator organisms for monitoring environmental contamination.
MeSH term(s)	Burkholderia Infections/epidemiology ; Burkholderia cepacia complex/genetics ; Chlorhexidine ; Cross Infection/epidemiology ; Disease Outbreaks ; Hong Kong ; Humans ; Peritoneal Dialysis
Chemical Substances	Chlorhexidine (R4KO0DY52L)
Language	English
Publishing date	2020-09-08
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1380686-5
ISSN	1080-6059 ; 1080-6040
ISSN (online)	1080-6059
ISSN	1080-6040
DOI	10.3201/eid2609.191746
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: SARS-CoV-2 Virus Culture and Subgenomic RNA for Respiratory Specimens from Patients with Mild Coronavirus Disease

Ranawaka A.P.M. Perera / Eugene Tso / Owen T.Y. Tsang / Dominic N.C. Tsang / Kitty Fung / Yonna W.Y. Leung / Alex W.H. Chin / Daniel K.W. Chu / Samuel M.S. Cheng / Leo L.M. Poon / Vivien W.M. Chuang / Malik Peiris

Emerging Infectious Diseases, Vol 26, Iss 11, Pp 2701-

2020 Volume 2704

Abstract	We investigated 68 respiratory specimens from 35 coronavirus disease patients in Hong Kong, of whom 32 had mild disease. We found that severe acute respiratory syndrome coronavirus 2 and subgenomic RNA were rarely detectable beyond 8 days after onset of illness. However, virus RNA was detectable for many weeks by reverse transcription PCR.
Keywords	severe acute respiratory syndrome coronavirus 2 ; SARS-CoV-2 ; coronavirus ; viruses ; coronavirus disease ; COVID-19 ; Medicine ; R ; Infectious and parasitic diseases ; RC109-216
Language	English
Publishing date	2020-11-01T00:00:00Z
Publisher	Centers for Disease Control and Prevention
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: SARS-CoV-2 Virus Culture and Subgenomic RNA for Respiratory Specimens from Patients with Mild Coronavirus Disease

Emerg Infect Dis

Abstract	We investigated 68 respiratory specimens from 35 coronavirus disease patients in Hong Kong, of whom 32 had mild disease. We found that severe acute respiratory syndrome coronavirus 2 and subgenomic RNA were rarely detectable beyond 8 days after onset of illness. However, virus RNA was detectable for many weeks by reverse transcription PCR.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #694508
Database	COVID19

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Article ; Online: Measles outbreak from Hong Kong International Airport to the hospital due to secondary vaccine failure in healthcare workers.

Cheng, Vincent C C / Wong, Shuk-Ching / Wong, Sally C Y / Sridhar, Siddharth / Chen, Jonathan H K / Yip, Cyril C Y / Hung, Derek L L / Li, Xin / Chuang, Vivien W M / Tsang, Owen T Y / Woo, Gibson K S / Chuang, Shuk-Kwan / Yuen, Kwok-Yung

Infection control and hospital epidemiology

2019 Volume 40, Issue 12, Page(s) 1407–1415

Abstract: Objective: To report an outbreak of measles with epidemiological link between Hong Kong International Airport (HKIA) and a hospital.: Methods: Epidemiological investigations, patients' measles serology, and phylogenetic analysis of the hemagglutinin ( ...

Abstract	Objective: To report an outbreak of measles with epidemiological link between Hong Kong International Airport (HKIA) and a hospital. Methods: Epidemiological investigations, patients' measles serology, and phylogenetic analysis of the hemagglutinin (H) and nucleoprotein (N) genes of measles virus isolates were conducted. Results: In total, 29 HKIA staff of diverse ranks and working locations were infected with measles within 1 month. Significantly fewer affected staff had history of travel than non-HKIA-related measles patients [10 of 29 (34.5%) vs 28 of 35 (80%); P < .01]. Of 9 airport staff who could recall detailed exposure history, 6 (66.7%) had visited self-service food premises at HKIA during the incubation period, where food trays, as observed during the epidemiological field investigation, were not washed after use. Furthermore, 1 airport baggage handler who was admitted to hospital A before rash onset infected 2 healthcare workers (HCWs) known to have 2 doses of MMR vaccination with positive measles IgG and lower viral loads in respiratory specimens. Infections in these 2 HCWs warranted contact tracing of another 168 persons (97 patients and 71 HCWs). Phylogenetic comparison of H and N gene sequences confirmed the clonality of outbreak strains. Conclusion: Despite good herd immunity with overall seroprevalence of >95% against measles, major outbreaks of measles occurred among HKIA staff having daily contact with many international pssengers. Lessons from severe acute respiratory syndrome (SARS) and measles outbreaks suggested that an airport can be a strategic epidemic center. Pre-exanthem transmission of measles from airport staff to HCWs with secondary vaccine failure poses a grave challenge to hospital infection control.
MeSH term(s)	Adult ; Airports ; Disease Outbreaks/statistics & numerical data ; Female ; Health Personnel ; Hong Kong/epidemiology ; Humans ; Immunization, Secondary ; Male ; Measles/epidemiology ; Measles/prevention & control ; Measles virus ; Measles-Mumps-Rubella Vaccine/administration & dosage ; Middle Aged ; Phylogeny ; Seroepidemiologic Studies ; Treatment Failure
Chemical Substances	Measles-Mumps-Rubella Vaccine
Keywords	covid19
Language	English
Publishing date	2019-10-07
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	639378-0
ISSN	1559-6834 ; 0195-9417 ; 0899-823X
ISSN (online)	1559-6834
ISSN	0195-9417 ; 0899-823X
DOI	10.1017/ice.2019.278
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Absence of nosocomial transmission of coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in the prepandemic phase in Hong Kong

Am J Infect Control

Abstract: BACKGROUND: To describe the infection control strategy to achieve zero nosocomial transmission of symptomatic coronavirus disease (COVID-19) due to SARS-CoV-2 during the prepandemic phase (the first 72 days after announcement of pneumonia cases in Wuhan) ...

Abstract	BACKGROUND: To describe the infection control strategy to achieve zero nosocomial transmission of symptomatic coronavirus disease (COVID-19) due to SARS-CoV-2 during the prepandemic phase (the first 72 days after announcement of pneumonia cases in Wuhan) in Hong Kong. METHODS: Administrative support with the aim of zero nosocomial transmission by reducing elective clinical services, decanting wards, mobilizing isolation facilities, providing adequate personal protective equipment, coordinating laboratory network for rapid molecular diagnosis under 4-tier active surveillance for hospitalized patients and outpatients, and organizing staff forum and training was implemented under the framework of preparedness plan in Hospital Authority. The trend of SARS-CoV-2 in the first 72 days was compared with that of SARS-CoV 2003. RESULTS: Up to day 72 of the epidemic, 130 (0.40%) of 32,443 patients being screened confirmed to have SARS-CoV-2 by reverse transcription polymerase chain reaction. Compared with SARS outbreak in 2003, the SARS-CoV-2 case load constituted 8.9% (130 SARS-CoV-2/1458 SARS-CoV) of SARS-CoV infected cases at day 72 of the outbreak. The incidences of nosocomial acquisition of SARS-CoV per 1,000 SARS-patient-day and per 100 SARS-patient-admission were 7.9 and 16.9, respectively, which were significantly higher than the corresponding incidences of SARS-CoV-2 (zero infection, P <.001). CONCLUSIONS: Administrative support to infection control could minimize the risk of nosocomial transmission of SARS-CoV-2.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #629078
Database	COVID19

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Article: Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong

Cheng, Vincent C C / Wong, Shuk-Ching / Chen, Jonathan H K / Yip, Cyril C Y / Chuang, Vivien W M / Tsang, Owen T Y / Sridhar, Siddharth / Chan, Jasper F W / Ho, Pak-Leung / Yuen, Kwok-Yung

Infect Control Hosp Epidemiol

Abstract: OBJECTIVE: To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, on ...

Abstract	OBJECTIVE: To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, on December 31, 2019 (day 1) in Hong Kong. METHODS: A bundled approach of active and enhanced laboratory surveillance, early airborne infection isolation, rapid molecular diagnostic testing, and contact tracing for healthcare workers (HCWs) with unprotected exposure in the hospitals was implemented. Epidemiological characteristics of confirmed cases, environmental samples, and air samples were collected and analyzed. RESULTS: From day 1 to day 42, 42 of 1,275 patients (3.3%) fulfilling active (n = 29) and enhanced laboratory surveillance (n = 13) were confirmed to have the SARS-CoV-2 infection. The number of locally acquired case significantly increased from 1 of 13 confirmed cases (7.7%, day 22 to day 32) to 27 of 29 confirmed cases (93.1%, day 33 to day 42; P < .001). Among them, 28 patients (66.6%) came from 8 family clusters. Of 413 HCWs caring for these confirmed cases, 11 (2.7%) had unprotected exposure requiring quarantine for 14 days. None of these was infected, and nosocomial transmission of SARS-CoV-2 was not observed. Environmental surveillance was performed in the room of a patient with viral load of 3.3 × 106 copies/mL (pooled nasopharyngeal and throat swabs) and 5.9 × 106 copies/mL (saliva), respectively. SARS-CoV-2 was identified in 1 of 13 environmental samples (7.7%) but not in 8 air samples collected at a distance of 10 cm from the patient's chin with or without wearing a surgical mask. CONCLUSION: Appropriate hospital infection control measures was able to prevent nosocomial transmission of SARS-CoV-2.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #4656
Database	COVID19

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