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Article ; Online: Hepatitis B burden and population immunity in a high endemicity city - a geographically random household epidemiology study for evaluating achievability of elimination - ERRATUM.

Wong, Ngai Sze / Chan, Denise Pui Chung / Poon, Chin Man / Chan, Chin Pok / Lau, Leonia Hiu Wan / Yeoh, Eng-Kiong / Lee, Shui Shan

Epidemiology and infection

2023 Volume 151, Page(s) e41

MeSH term(s)	Humans ; Hepatitis B/epidemiology ; Hepatitis B/prevention & control ; Hepatitis B virus ; Research Design
Language	English
Publishing date	2023-03-16
Publishing country	England
Document type	Journal Article ; Published Erratum
ZDB-ID	632982-2
ISSN	1469-4409 ; 0950-2688
ISSN (online)	1469-4409
ISSN	0950-2688
DOI	10.1017/S0950268823000341
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Article ; Online: Low uptake of nurses in a mass screening programme for SARS-CoV-2 and its implications on epidemic control.

Lee, Shui Shan / Chan, Chin Pok / Wong, Ngai Sze

Infectious diseases (London, England)

2021 Volume 53, Issue 6, Page(s) 469–472

MeSH term(s)	COVID-19 ; Epidemics ; Humans ; Mass Screening ; SARS-CoV-2
Language	English
Publishing date	2021-02-20
Publishing country	England
Document type	Letter ; Research Support, Non-U.S. Gov't
ZDB-ID	2839775-7
ISSN	2374-4243 ; 2374-4235
ISSN (online)	2374-4243
ISSN	2374-4235
DOI	10.1080/23744235.2021.1887512
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Article ; Online: Temporal Changes in Sexually Transmitted Infections in a Cohort of Men Who Have Sex with Men Living with HIV: Sex Partner Seeking and Behavioral Correlates.

Chan, Chin Pok / Kwan, Tsz Ho / Wong, Ngai Sze / Poon, Chin Man / Lee, Shui Shan

Archives of sexual behavior

2023 Volume 52, Issue 5, Page(s) 2051–2063

Abstract: With "undetectable equals untransmittable," continued engagement in condomless sex has prolonged STI risk in people living with HIV. This study examined the pattern and relationship between STI diagnosis and sex partner-seeking practice over time in a ... ...

Abstract	With "undetectable equals untransmittable," continued engagement in condomless sex has prolonged STI risk in people living with HIV. This study examined the pattern and relationship between STI diagnosis and sex partner-seeking practice over time in a cohort of men who have sex with men (MSM) attending the HIV specialist clinic in Hong Kong. Participants' STI diagnosis record since HIV diagnosis was retrieved and their frequency of seeking sex partners (A) before, (B) after HIV diagnosis, and (C) following extended period (5-10 years), through eight different settings, was assessed in two rounds of survey, along with their risk behavioral profile. Multivariable regression models were employed to study the factors associated with STI diagnosis and partner-seeking frequency, while their temporal relationships over the three time points (A-C) were examined using cross-lagged panel model. Of 345 subjects recruited, STI incidence dropped from 252 to 187 cases/1000 person-years during 2015-2019. Totally 139/212 MSM (66%) had ≥ 1 episode of STI within the 10-year period after HIV diagnosis, giving an 11-20% annual prevalence. The reduced frequency of seeking sex partner was well preserved following diagnosis with a rebound specifically noted in the use of mobile application, the patrons of which were more likely to be co-infected with STI in 2019. Chemsex, concurrent partnership, and casual sex were risk factors shared between frequent partner-seeking practice and STI diagnosis. A robust autoregressive effect for partner-seeking frequency was also identified, and which significantly predicted STI risk in the long term. To enhance HIV care, the co-administration of STI/behavioral surveillance should be emphasized.
MeSH term(s)	Male ; Humans ; Sexual Partners ; Homosexuality, Male ; Sexual Behavior ; Sexual and Gender Minorities ; Sexually Transmitted Diseases/epidemiology ; HIV Infections/epidemiology
Language	English
Publishing date	2023-04-26
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	184221-3
ISSN	1573-2800 ; 0004-0002
ISSN (online)	1573-2800
ISSN	0004-0002
DOI	10.1007/s10508-023-02598-3
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Article ; Online: The double-edged impacts of COVID-19 epidemic on influenza vaccination uptake in nurses in Hong Kong.

Chan, Chin Pok / Wong, Ngai Sze / Lee, Shui Shan

Infectious diseases (London, England)

2022 Volume 54, Issue 11, Page(s) 794–803

Abstract: Background: Worldwide, the COVID-19 pandemic has disrupted influenza seasonality and impacted influenza vaccination behaviours. This study examines the patterns of influenza vaccination uptake in nurses during the pre-pandemic seasons and amidst the ... ...

Abstract	Background: Worldwide, the COVID-19 pandemic has disrupted influenza seasonality and impacted influenza vaccination behaviours. This study examines the patterns of influenza vaccination uptake in nurses during the pre-pandemic seasons and amidst the pandemic in 2020/21 in subtropical Hong Kong. Methods: In April 2021, a cross-sectional survey was conducted in practising and student nurses. Six patterns were differentiated by their influenza vaccination status in 2020/21 and preceding five seasons: (a) resistance throughout, (b) negative change, (c) decreased tendency, (d) increased tendency (e) positive change, and (f) adherence throughout. Participants' characteristics and reasons for vaccination/non-vaccination and their associations with each vaccination pattern were explored using multivariable multinomial regression. Results: Among 1323 nurses (88% female with a median age of 39 years), no substantial change in vaccination uptake was noted from 2019/20 (41%) to 2020/21 (42%). Some 4% were positive-changers who were older at age of ≥50 years (aOR 4.77) and more likely to anticipate a reduced risk of severe disease with COVID-19/influenza co-infection following vaccination (aOR 8.76). Negative-changers made up 3% and were more inclined to perceive an unlikelihood of widespread influenza outbreaks amidst the pandemic (aOR 3.67). Some 26 and 43% remained adherent and resistant to influenza vaccination throughout respectively notwithstanding the COVID-19 outbreak. Conclusions: In contrast to the increased uptake elsewhere, the stable influenza vaccination coverage among nurses in Hong Kong could be explained by the ubiquity of strict physical distancing regulations, which have deterred vaccination in some nurses that offsets the new uptakes induced by the mild COVID-19 outbreaks.
MeSH term(s)	Adult ; COVID-19/epidemiology ; COVID-19/prevention & control ; Cross-Sectional Studies ; Female ; Hong Kong/epidemiology ; Humans ; Influenza Vaccines ; Influenza, Human/epidemiology ; Influenza, Human/prevention & control ; Male ; Middle Aged ; Pandemics/prevention & control
Chemical Substances	Influenza Vaccines
Language	English
Publishing date	2022-07-04
Publishing country	England
Document type	Journal Article
ZDB-ID	2839775-7
ISSN	2374-4243 ; 2374-4235
ISSN (online)	2374-4243
ISSN	2374-4235
DOI	10.1080/23744235.2022.2094461
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Article ; Online: Clustered HCV transmission in HIV-positive MSM and the impacts of interventions for achieving microelimination.

Chan, Denise Pui Chung / Wong, Bonnie Chun Kwan / Wong, Ka Hing / Poon, Chin Man / Chan, Chin Pok / Cheung, Danny King Fai / Wong, Ngai Sze / Lee, Shui Shan

The Journal of infection

2023 Volume 86, Issue 5, Page(s) 493–496

MeSH term(s)	Humans ; Male ; HIV Seropositivity ; HIV Infections/epidemiology ; HIV Infections/prevention & control ; Hepatitis C/epidemiology ; Hepatitis C/prevention & control ; Homosexuality, Male ; Hepacivirus
Language	English
Publishing date	2023-02-21
Publishing country	England
Document type	Letter ; Research Support, Non-U.S. Gov't ; Comment
ZDB-ID	424417-5
ISSN	1532-2742 ; 0163-4453
ISSN (online)	1532-2742
ISSN	0163-4453
DOI	10.1016/j.jinf.2023.02.023
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Article ; Online: Hepatitis B burden and population immunity in a high endemicity city - a geographically random household epidemiology study for evaluating achievability of elimination.

Wong, Ngai Sze / Chan, Denise Pui Chung / Poon, Chin Man / Chan, Chin Pok / Lau, Leonia Hiu Wan / Yeoh, Eng-Kiong / Lee, Shui Shan

Epidemiology and infection

2023 Volume 151, Page(s) e22

Abstract: This study aimed to provide reference for evaluating the achievability of hepatitis B virus (HBV) elimination in a high endemicity city with universal neonatal vaccination in place for over 30 years. Between September 2018 and October 2020, 2085 citizens ...

Abstract	This study aimed to provide reference for evaluating the achievability of hepatitis B virus (HBV) elimination in a high endemicity city with universal neonatal vaccination in place for over 30 years. Between September 2018 and October 2020, 2085 citizens from 1143 geographically random households in Hong Kong completed a questionnaire and had blood-testing for HBV markers (anti-HBs, HBsAg, anti-HBc, HBeAg). We evaluated the epidemiology and examined factors associated with HBV exposure, vaccination and chronic diseases. The proportion of households with HBsAg positive index participants was 9.2% (95% CI 7.5%-10.9%). The age- and sex-adjusted HBsAg prevalence was 6.3% (95% CI 5.3%-7.4%), compared to >10% in those born in 1960-1970 and among non-local born citizens, and <1% in people born after introduction of neonatal vaccination. Among 155 HBsAg positive participants, 59% were aware of their infection status with 10% on treatment and 10/150 (6.7%) HBeAg positive. More than 40% (872/2064) tested negative for both HBsAg and anti-HBs, contributed by the lack of immunity in older adults and the waning immunity of vaccines. Hong Kong has remained at high-intermediate HBV endemicity state. The moderate level of anti-HBs positivity and very low treatment coverage (10%) among HBsAg positive participants pose challenges for achieving the HBV elimination target.
MeSH term(s)	Infant, Newborn ; Humans ; Middle Aged ; Aged ; Hepatitis B Surface Antigens ; Hepatitis B e Antigens ; Hepatitis B/epidemiology ; Hepatitis B virus ; Hepatitis B Vaccines ; Hepatitis B Antibodies
Chemical Substances	Hepatitis B Surface Antigens ; Hepatitis B e Antigens ; Hepatitis B Vaccines ; Hepatitis B Antibodies
Language	English
Publishing date	2023-01-11
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	632982-2
ISSN	1469-4409 ; 0950-2688
ISSN (online)	1469-4409
ISSN	0950-2688
DOI	10.1017/S095026882300002X
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Article ; Online: Awareness of HIV functional cure and willingness in participating in related clinical trials: comparison between antiretroviral naïve and experienced men who have sex with men living with HIV.

Kwan, Tsz Ho / Chan, Chin Pok / Wong, Ngai Sze / Lee, Shui Shan

BMC infectious diseases

2022 Volume 22, Issue 1, Page(s) 383

Abstract: Background: Human immunodeficiency virus (HIV) functional cure is a novel biomedical strategy characterized by sustained viral suppression without the need for life-long medications. The attitude of people living with HIV (PLHIV) towards functional cure ...

Abstract	Background: Human immunodeficiency virus (HIV) functional cure is a novel biomedical strategy characterized by sustained viral suppression without the need for life-long medications. The attitude of people living with HIV (PLHIV) towards functional cure and clinical trials are understudied. We aimed to examine the awareness and levels of anticipation for HIV functional cure among men who have sex with men (MSM) living with HIV, and their willingness to join trials as differentiated by their antiretroviral treatment status. Methods: MSM living with HIV with and those without treatment history were recruited from Hong Kong's HIV specialist clinics. Self-administered questionnaires covering behavioral profile, perceived impact of HIV cure, attitude towards HIV functional cure and related clinical trials were collected. Clinical data were separately transcribed. Determinants of perceptions and attitudes were identified by logistic regression models. Results: Of 356 MSM living with HIV recruited, less than half (42%) were aware of HIV functional cure, but they had a high level of anticipation for it. Treatment-experienced participants were more likely to be aware of HIV functional cure. Awareness was associated with continued engagement in sexual activities after HIV diagnosis and sexually transmitted infection (STI) diagnosis. Higher anticipation was observed among older MSM living with HIV but it was negatively associated with one's awareness. Over 90% were willing to join functional cure trials, especially those who had previously been diagnosed with STI and had engaged in chemsex in the past year. Advice from healthcare professional was an important factor considered by those willing to join clinical trials. Younger, better educated MSM, and those with lower CD4 counts were more concerned about potential risk of AIDS and potential complications upon trial participation. Conclusions: MSM living with HIV, especially those sexually active, showed positive attitude towards functional cure and willingness to join related clinical trials despite low awareness. To enhance preparedness for HIV functional cure trials, community education, updated information and appropriate medical advice would be needed. Safety is a major concern for potential enrollees in HIV functional cure trials.
MeSH term(s)	Cross-Sectional Studies ; Female ; HIV Infections/diagnosis ; HIV Infections/drug therapy ; Homosexuality, Male ; Humans ; Male ; Sexual Behavior ; Sexual and Gender Minorities ; Sexually Transmitted Diseases
Language	English
Publishing date	2022-04-15
Publishing country	England
Document type	Journal Article
ZDB-ID	2041550-3
ISSN	1471-2334 ; 1471-2334
ISSN (online)	1471-2334
ISSN	1471-2334
DOI	10.1186/s12879-022-07346-x
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Article ; Online: Positive impact of measures against COVID-19 on reducing influenza in the Northern Hemisphere.

Chan, Chin Pok / Wong, Ngai Sze / Leung, Chi Chiu / Lee, Shui Shan

Journal of travel medicine

2020 Volume 27, Issue 8

MeSH term(s)	COVID-19/epidemiology ; Comorbidity ; Global Health ; Humans ; Influenza Vaccines/therapeutic use ; Influenza, Human/epidemiology ; Influenza, Human/prevention & control ; Pandemics ; SARS-CoV-2 ; Seasons ; Travel ; Vaccination/methods
Chemical Substances	Influenza Vaccines
Keywords	covid19
Language	English
Publishing date	2020-06-18
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	1212504-0
ISSN	1708-8305 ; 1195-1982
ISSN (online)	1708-8305
ISSN	1195-1982
DOI	10.1093/jtm/taaa087
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Article ; Online: Point-of-care hepatitis C reflex testing and treatment referral in methadone clinic settings in Hong Kong-a pilot study.

Wong, Ngai-Sze / Chan, Denise Pui-Chung / Chan, Chin-Pok / Poon, Chin-Man / Wong, Grace Lai-Hung / Wong, Vincent Wai-Sun / Lee, Shui-Shan

IJID Regions (Online)

2022 Volume 5, Page(s) 8–12

Abstract: Objectives: People who inject drugs (PWID) constitute a population group with a high hepatitis C virus (HCV) burden. With the objectives of assessing the HCV prevalence in PWID and determining the proportion requiring treatment who could be linked to ... ...

Abstract	Objectives: People who inject drugs (PWID) constitute a population group with a high hepatitis C virus (HCV) burden. With the objectives of assessing the HCV prevalence in PWID and determining the proportion requiring treatment who could be linked to care, this study piloted onsite reflex HCV testing at low threshold methadone clinics, with prompt referral of HCV RNA-positive participants for treatment. Methods: This was a prospective study on methadone clinic attendees in Hong Kong. Questionnaires were completed, finger-prick anti-HCV rapid testing was performed, and positive blood samples were collected for laboratory HCV RNA testing. The proportions of participants along the cascade of HCV care were calculated. Results: In 2021-2022, after 14 evening screening sessions at three methadone clinics, 86 of 354 regular attendees (24%) were recruited. The anti-HCV prevalence was 63% (54/86, 95% confidence interval 52-73%), with 78% (42/54) testing positive for HCV RNA and 79% (33/42) successfully referred. Almost all (31/33) referred participants received direct-acting antiviral (DAA) treatment, 94% (29/31) with full treatment compliance; 55% (16/29) of these compliant participants achieved a sustained virological response, while the remainder had not received post-treatment testing. Conclusions: The use of a simplified testing algorithm in the setting of substitution treatment services, incorporating reflex HCV testing, could be an effective strategy for contributing towards the micro-elimination of HCV in PWID.
Language	English
Publishing date	2022-08-29
Publishing country	England
Document type	Journal Article
ISSN	2772-7076
ISSN (online)	2772-7076
DOI	10.1016/j.ijregi.2022.08.007
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Article: Positive impact of measures against COVID-19 on reducing influenza in the Northern Hemisphere

Chan, Chin Pok / Wong, Ngai Sze / Leung, Chi Chiu / Lee, Shui Shan

J. travel med

Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #401631
Database	COVID19

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