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1. Abstracts from the 8th International Congress of the Asia Pacific Society of Infection Control (APSIC)

Author

Nantanit Sutthiruk, Mari Botti, Julie Considine, Andrea Driscoll, Ana Hutchinson, Kumthorn Malathum, Cucunawangsih Cucunawangsih, Veronica Wiwing, Vivien Puspitasari, Rathina Kumar Shanmugakani, Yukihiro Akeda, Takuya Kodera, Pitak Santanirand, Kazunori Tomono, Takayuki Yamanaka, Hiroyuki Moriuchi, Hiroyuki Kitajima, Yuho Horikoshi, Alyona Lavrinenko, Ilya Azizov, Nurlan Tabriz, Margulan Kozhamuratov, Yekatherine Serbo, Dahae Yang, Woonhyoung Lee, Il Kwon Bae, Jae Hyun Lee, Hyukmin Lee, Jung Ok Kim, Seok Hoon Jeong, Kyungwon Lee, Thiba Peremalo, Priya Madhavan, Sharina Hamzah, Leslie Than, Eng Hwa Wong, Mohd Nasir Mohd Desa, Kee Peng Ng, Marionne Geronimo, Maria Fe Tayzon, Maria Jesusa Maño, Angela Chow, Pei-Yun Hon, Mar-Kyaw Win, Brenda Ang, Yee-Sin Leo, Tina See, Rocio Alvarez Marin, Marta Aires de Sousa, Nicolas Kieffer, Patrice Nordmann, Laurent Poirel, Wison Laochareonsuk, Sireekul Petyu, Pawin Wanasitchaiwat, Sutasinee Thana, Chollathip Bunyaphongphan, Woranan Boonsomsuk, Pakpoom Maneepongpermpoon, Silom Jamulitrat, Dorairajan Sureshkumar, Kalyanaraman Supraja, Soundararajan Sharmila, Benny Setiawan, Nicolaski Lumbuun, Haruo Nakayama, Toshiko Ota, Naoko Shirane, Chikako Matuoka, Kentaro Kodama, Masanobu Ohtsuka, Silverose Ann Andales Bacolcol, Melecia Velmonte, Allan Alde, Keithleen Chavez, Arlene Joy Esteban, Aisa Jensen Lee, Tai-Chin Hsieh, Shio-ShinJean, Huey-Jen Huang, Shu-Ju Huang, Yu-Huan Huang, Pei-Chen Cheng, Su-Fang Yu, Shih-Ming Tsao, Yuan-Ti Lee, Chien-Feng Li, Min-Chi Lu, Nattapol Pruetpongpun, Thana Khawcharoenporn, Pansachee Damronglerd, Nuntra Suwantarat, Anucha Apisarnthanarak, Sasinuch Rutjanawech, Lisa Cushinotto, Patty McBride, Harding Williams, Hans Liu, Phan Thi Hang, Dinh Pham Phuong Anh, Ngai Le, Dung Khu, Lam Nguyen, Roel Beltran Castillo, Ram Gopalakrishnan, Venkatasubramanian Ramasubramanian, Subramanian Sreevidya, Ranganathan Jayapradha, Atsushi Umetsu, Tetsuhiro Noda, Kenyuu Hashimoto, Akihiro Hayashi, Mikie Kabashima, Ursula Jadczak, Knut Elvelund, Marit Johnsen, Bente Borgen, Egil Lingaas, Chia-Hua Mao, Fu-Chieh Chang, Chang-Pan Liu, Ru-Hui Chao, Fu-chieh Chang, Chang-pan Liu, Junpen Pawapotako, Chadanan Prasertpan, Wantanee Malaihuan, Phisit Uirungroj, Chalermpong Saenjum, Teerapat Ouirungrog, Sue Borrell, Pauline Bass, Leon Worth, Zhao Xian-li, Li Xiao-long, Yao Xue-hua, Ren Wei, Zhang Xia Zeng, Man Ying Kong, Christopher Koon Chi Lai, Suet Yi Lee, Ngai Chong Tsang, M. M. O’Donoghue, M. V. Boost, L. K. P. Suen, G. K. Siu, K. W. Mui, C. K. C. Lai, D. N. C. Tsang, Yuka Sato, Mariko Tateishi, Mutsuko Mihashi, Jose Paulo Flor, Marko Bautista, V. Jay De Roxas, Justine Vergara, Nicolo Andrei Añonuevo, Marion Kwek, Jose Acuin, Anna Josea Sanchez, Avel Bathan, Jamilah Binte Jantan, Chua Chor Guek, Eu Chiow Kian, Pampe Anak Pirido, Nur Fadilah Binte Mohd Aron, Leah May Estacio, Francis Alvarez Palana, Michelle Gracia, Nur Syafiqah Binte Shamsuddin, Kersten Timbad Castro, Madonna Baloria, Faezah Binte Adam, Zhang Wei, Poh Bee Fong, Marimuthu Kalisvar, I-Ju Chuang, Yi-ChunCho, Yu-Fen Chiu, Lung-Chih Chen, Yi-Chun Lin, Shao-Xing Dong, Yi-Chieh Lee, Hui-Chen Kuan, Hsin-Hua Lin, Chia-Chun Chi, Chin-Te Lu, Tang Ya-Fen, Su Li-Hsiang, Liu Jien-Wei, Hsuehlan Chao, PinRu ChangChien, WeiFang Chen, ChungHsu Lai, Lutfe Ara, Syed Mohammad Niaz Mowla, Shaikh Mahmud Kamal Vashkar, Wai Fong Chan, Mabel Yin ChunYau, Karen Kam LingChong, Tze OnLi, Rajwinder Kaur, Ng Po Yan, Gloria Chor Shan Chiu, Christina W. Y. Cheung, Patricia T. Y. Ching, Radley H. C. Ching, Conita H. S. Lam, C. H. Kan, Shirley S. Y. Lee, C. P. Chen, Regina F. Y. Chan, Annie F. Y. Leung, Isadora L. C. Wong, S. S. Lam, Queenie W. L. Chan, Cecilia Chan, Seyed Sadeq Seyed Nematian, Charles John Palenik, Mehrdad Askarian, Nahid Hatam, Itaru Nakamura, Hiroaki Fujita, Ayaka Tsukimori, Takehito Kobayashi, Akihiro Sato, Shinji Fukushima, Tetsuya Matsumoto, V. James De Roxas, V James De Roxas, Nicolo AndreiAñonuevo, Yeng May Ho, Jia Qi Kum, Bee Fong Poh, Kalisvar Marimuthu, Tzu-Yin Liu, Sin-Man Chu, Hui-Zhu Chen, Tun-chieh Chen, Yichun Chen, Ya-Ching Tsao, Sumawadee Skuntaniyom, Pirawadee Tipluy, Sangwan Paengta, Ratchanee wongsaen, Sutthiphun thanomphan, Samettanet Tariyo, Buachan Thongchuea, Pattama Khamfu, Sutthiphan Thanomphan, Wipaporn Natalie Songtaweesin, Suvaporn Anugulruengkit, Rujipat Samransamruajkit, Darintr Sosothikul, Ornanong Tansrijitdee, Anry Nakphunsung, Patchareeyawan Srimuan, Jirachaya Sophonphan, ThanyaweePuthanakit, Kunyanut Payuk, Wilawan Picheansathian, Nongkran Viseskul, Elizabeth DeNardo, Rachel Leslie, Todd Cartner, Luciana Barbosa, Heinz-Peter Werner, Florian H. H. Brill, Julia Yaeko Kawagoe, Elizabeth De Nardo, Sarah Edmonds- Wilson, David Macinga, Patricia Mays-Suko, Collette Duley, Tran Thi Thuy Hang, Tran Thi My Hanh, Christopher Gordon, Roopa Durairaj, Anusha Rohit, Saujanya Saravanakumar, Jothymani Hemalatha, Ryuichi Hirano, Yuichi Sakamoto, Shoji Yamamoto, Naoki Tachibana, Miho Miura, Fumiyo Hieda, Yoshiro Sakai, Hiroshi Watanabe, Silverose Ann Bacolcol, Keitleen Chavez, Jia-Wei Lim, Aung-Aung Hein, Grace Tin, Vanessa Lim, Huwi-chun Chao, Chiu-Yin Yeh, Mei-feng Lo, Chonlada Piwpong, Songyos Rajborirug, Ploypailin Preechawetchakul, Yada Pruekrattananapa, Tharntip Sangsuwan, Ratchanee Wongsaen, Sungwan Paengta, Napatnun Nilchon, Sutthipun Thanompan, Samattanet Tariyo, Svetlana Kolesnichenko, Yerbol Tishkambayev, Asylkhan Alibecov, Yekaterina Serbo, Youngwon Nam, Jae Hyeon Park, Yun Ji Hong, Taek Soo Kim, Jeong Su Park, Kyoung Un Park, Eui-Chong Kim, Samuel Abumhere Aziegbemhin, Onaiwu Enabulele, Yao-Shen Tung, An-Chi Chen, Shen-Min Huang, Yui-Yein Yang, Li-Hung Wu, Chin-cheng Lin, Tzu Hao Lien, Jia Hao Chang, Yu Shan Huang, Yi Shun Chen, Sasithorn Sirilun, Phisit Ouirungroj, Suwanna Trakulsomboon, Patcharee Prasajak, Maryanne W. N. Kwok, Lady S. H. Ng, Lindy M. T. Wong, Lenina S. L. Poon, Mary K. L. Lai, Holly H. S. Cheng, S. K. Fong, Cindy F. Y. Leung, Jumpei Hasegawa, Hiroki Shirakawa, Sachiko Wakai, Makiko Mieno, Shuji Hatakeyama, Manu Deeudom, Prasit Tharavichitkul, Terrence Chinniah, Jackson Tan, Kavitha Prabu, Sartaj Alam, Aung Kyaw Wynn, Rashidah Ahmad, Amalina Sidek, Dg Azizah Samsuddin, Noraini Ajis, Aliyah Ahmad, Susylawathi Magon, Boon Chu, Jiqiu Kuang, Yan Gao, Shoujun Wang, Yunxiao Hao, Rong Liu, Dongmei Li, Hui Wang, Hisanori Nishio, Hitomi Mori, Yoshiko Morokuma, Takaaki Yamada, Makiko Kiyosuke, Sachie Yasunaga, Kazuhiro Toyoda, Nobuyuki Shimono, Dmitriy Babenko, Anar Turmuhambetova, Antonella Cheşcă, Mark A. Toleman, Lyudmila L. Akhmaltdinova, Mark Albert Magsakay, Angelo Macatibag, Jeannica Kriselle Lerios, Alyona Lavrineko, Dmitry Babenko, Eugene Sheck, Mikhail Edelstein, Lih-Yue Li, Chiung-Wen Chan, Hui-Chuan Pan, Wipa Vanishakije, Warisra Jaikampun, Su-Yin Li, Jian-Feng Li, Yu-Ping Wu, Chiao-Hui Lin, Ping-Chin Chang, Samatanet Tariyo, Suttsiphan Thanompan, Suchada Sukkra, Khalequ Zaman, Sheikh Farzana Zaman, Farzana Zaman, Asma Aziz, Sayeed-Bin Faisal, Magali Traskine, Javier Ruiz-Guiñazú, Dorota Borys, Wendy Wai Yee Lam, May Chow, Lucy Choy, Joseph Kam, Sharifah Azura Salleh, Razila Yacob, Siti Rokiah Yusof, Nordiah Awang Jalil, Maria Lourdes Millan, Jose Lito Acuin, Melecia A. Velmonte, Silverose Ann A. Bacolcol, Ching-I Ting, Sunisa Dissayasriroj, Terrence Rohan Chinniah, Jauharatud DiniSuhaimi, Aizzuddin Mirasin, Nurul Morni, Azizah Samsuddin, Amalina AbuBakar, Amanie Shafiee, Julaini Safar, Leung Annie, Fung Yuk Ling, Lau Edna, Luk Kristine, Satoshi Shinomiya, Kumiko Yamamoto, Kayoko Kjiwara, Mitsuhiro Yamaguchi, Wei Zhang, Bee-Fong Poh, Ming-Chin Chan, Chih-Chien Wang, Huan-Yu Huang, Chiung-Ling Lai, Sajeerat Kosol, Wantana Sakolwirat, Patchanee Paepong, Sawalee Jansanga, Pattarin Jaisamoot, Nuttha Thongnuanual, Chittima Srithong, Somporn Somsakul, Sutima Plongpunth, Mukkapon Punpop, Porntip Malathum, Kulada Peautiwat, Nattawipa boon kirdram, Pimpaporn Klunklin, Geetha Samethadka, Naoko Suzuki, Hitomi Asada, Masao Katayama, Atsushi Komano, Hidehiro Watanabe, Hye Kyung Seo, Joo-Hee Hwang, Myoung Jin Shin, Su Young Kim, Eu Suk Kim, Kyoung-Ho Song, Hong Bin Kim, Lai-Si Un, Choi-Ian Vong, Jocelyn Koh, Sherly Agustinus, Rozita Bte Abu Hassan, Yin Phyu Thinn, Benjamin Ng, Soe Pyae Tun, Su Mon Thi Ha, Xue Xiaoting, Lin Li, Leyland Chuang, Attanayaka Mudiyanselage Chulani Niroshika, Kaluarachchige Anoma Kaluarachchi Perera, Dimingo Kankanamalage Diana Grace Fernando, Bodhipakshage Rohini Hemamala, Chiu-yin Yeh, Hui-Chun Yang, Hsiang-Ju Chiu, Ya-Ling Shih, Yu-Shan Chien, Wan-Yi Lin, Chia-Yun Pan, Ying-Yun Chang, Chiu-Yuch Yea, Ming-Hsien Chu, Li-Chu Lee, Lin Yu-Hsiu, Guo Siao-Pei, Leung Pak-On, Sie Mei-Fe, Chen Jyh-Jou, Chang Yong-Yuan, Shu-Yuan Kuo, Yu-Hsiu Lin, Ji-Sheng Zhang, Pak-On Leung, Mei-Fe Sie, Jyh-Jou Chen, Yan-Ru Chen, Ying-Ling Chen, Chi-Fen Taou, Hsiao-Shan Chen, Hung-Jen Tang, Shin Yu Chen, Yin Yin Chen, Fu Der Wang, Tzu-Ping Shih, Chin-Yu Chen, Su-Jung Chen, Mei-chi Wu, Wan-ju Yang, Mei-ling Chou, Man-Ling Yu, Li-Chu Li, Cheng-Wei Chu, Wen-Hao Tsou, Wen-Chih Wu, Wen-Chi Cheng, Cho-Ching Sun, Shu-Hua Lu, Hsin-Ling Yang, Cheng-Yu Lu, Nitchawan Hirunprapakorn, Sirilux Apivanich, Ttipakorn Pornmee, Chonnikarnt Beowsomboon, Itthaporn Kumkoom, Nongyao Kasatpibal, Jittaporn Chitreecheur, JoAnne D. Whitney, Surasak Saokaew, Kirati Kengkla, Margaret M. Heitkemper, Thanomvong Muntajit, Siriluk Apivanich, Hang Thi Phan, Anh Pham Phuong Dinh, and Tuyet Thi Kim Nguyen

Subjects
Infectious and parasitic diseases, RC109-216
Published
2017
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2. Clostridium difficile infection outbreak in a male rehabilitation ward, Hong Kong (China), 2011

Author

Man-ha Wong, Shuk-kwan Chuang, Ngai-chong Tsang, Tsz-sum Lam, and Man-ting Yuk

Subjects
Clostridium difficile, male rehabilitation ward, Hong Kong, Medicine, Public aspects of medicine, RA1-1270
Abstract

Clostridium difficile is an anaerobic, gram-positive bacterium, capable of sporulation when environmental conditions no longer support its growth. The sporulation capacity enables the organism to persist in the environment for extended periods of time. Clostridium difficile is the main pathogen accountable for antibiotic-associated colitis and for 15% to 25% of cases of nosocomial antibiotic-associated diarrhoea. Major risk factors such as increased severity of underlying illness, increased age, prior antimicrobial use and gastric acid suppressors have been identified for Clostridium difficile.

Published
2012
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3. Serum Antibody Profile of a Patient With Coronavirus Disease 2019 Reinfection.

Author

Kelvin Kai-Wang To, Ivan Fan-Ngai Hung, Kwok-Hung Chan, Shuofeng Yuan, Wing-Kin To, Dominic Ngai-Chong Tsang, Vincent Chi-Chung Cheng, Zhiwei Chen, Kin-Hang Kok, and Kwok-Yung Yuen

Abstract

We recently reported a patient with coronavirus disease 2019 reinfection. Here, we show that serum neutralizing antibodies could be detected during the first episode but not at the presentation of the second episode. During reinfection, neutralizing antibodies and high avidity immunoglobulin G were found within 8 days after hospitalization, whereas immunoglobulin M response was absent. [ABSTRACT FROM AUTHOR]

Published
2021
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6. Prevalence of Subclinical Infection by the SARS Coronavirus among General Practitioners in Hong Kong.

Author

Wai Cho Yu, Thomas Ho Fai Tsang, Wing Lok Tong, Tak Keung Ng, Wilina Lim, Henry Chiu Fat Yeung, Wing Kin To, Bosco Lam, Dominic Ngai Chong Tsang, Thomas Ock Ling Ho, Sik To Lai, and Kwok Lung Tong

Subjects
SARS disease, GENERAL practitioners, CORONAVIRUS diseases, IMMUNOFLUORESCENCE, POLYMERASE chain reaction, ENZYME-linked immunosorbent assay
Abstract

Eight general practitioners had severe acute respiratory distress syndrome (SARS) in Hong Kong during the epidemic, and others may have been infected by the SARS coronavirus without developing the full syndrome. We conducted a serological and questionnaire survey to determine the prevalence of subclinical infection by SARS coronavirus among general practitioners in Hong Kong. Participants had to be doctors actively practising in family medicine and who did not have SARS. Approximately 3200 general practitioners were invited to participate and the results of 574 were eligible for analysis. 29 samples were tested positive by enzyme-linked immunosorbent assay, but all these samples had titre <25 by immunofluorescence assay. The prevalence for seropositivity was thus 0% (95% CI, 0.0%–/0.6%). This finding documents the lack of subclinical infection by SARS coronavirus in an at-risk group in the community. [ABSTRACT FROM AUTHOR]

Published
2004
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7. Look-back investigation of a health care worker infected with human immunodeficiency virus.

Author

Tai Hing Lam, Ngai Chong Tsang, Dominic, Yee Chi Lo, Janice, Gold, Julian, Hung To Luk, Sik To Lai, Mang Yee Ho, Tsao, Johanna, and Ka Hing Wong

Abstract

We report the referral of an HIV-infected surgeon and a subsequent first-ever recommended look-back investigation in Hong Kong. Efficient coordination and effective implementation of the look-back investigation yielded a high response rate of 92.3% of priority patients, with none tested HIV positive. Our experience reconfirmed the very small risk of provider-to-patient HIV transmission and the crucial importance of infection control. [ABSTRACT FROM AUTHOR]

Published
2014
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9. Occurrence of Highly Conjugative IncX3 Epidemic Plasmid Carrying blaNDM in Enterobacteriaceae Isolates in Geographically Widespread Areas

Author

Ya Wang, Man-Ki Tong, Kin-Hung Chow, Vincent Chi-Chung Cheng, Cindy Wing-Sze Tse, Alan Ka-Lun Wu, Raymond Wai-Man Lai, Wei-Kwang Luk, Dominic Ngai-Chong Tsang, and Pak-Leung Ho

Subjects
carbapenems, antimicrobial resistance epidemiology, molecular epidemiology, Enterobacteriaceae, resistance plasmid, Microbiology, QR1-502
Abstract

The emergence of New Delhi metallo-β-lactamase (NDM) in common enterobacterial species is a major concern for healthcare. Early reports have revealed that the spread of NDM involved diverse and heterogeneous plasmids. Recently, the involvement of a rare, IncX3 subtype plasmid has been increasingly recognized. Here, we studied the prevalence of IncX plasmid subtypes in 198 carbapenem-resistant Enterobacteriaceae, originating from a territory-wide active surveillance in Hong Kong in 2016. The complete sequences and biological features of the blaNDM-carrying plasmids were investigated. A total of 62 NDM-type, 21 OXA-48 type, 14 IMP-type, 8 KPC-type, 4 IMI-type producers, and 89 non-carbapenemase-producers were tested for presence of IncX subtypes. IncX3 (n = 60) was the most common subtype, followed by IncX4 (n = 6) and IncX1 (n = 2). The prevalence of IncX3 subtype in isolates producing NDM, other carbapenemase types and non-carbapenemase producers were 75.8, 21.3, and 3.4%, respectively (P < 0.001). An IncX3 plasmid (size ∼50 kb) was confirmed to carry blaNDM in 47 isolates of different enterobacterial species. Thirteen IncX3 plasmids originating from six healthcare regions in Hong Kong were completely sequenced. The results showed that the IncX3 plasmids carrying blaNDM share a high degree of sequence identity with a previously reported plasmid, pNDM-HN380 (GenBank accession JX104760), over the backbone and genetic load regions. A blast search further revealed the occurrence of identical or nearly identical IncX3 plasmids carrying blaNDM in other part of China, Korea, Myanmar, India, Oman, Kuwait, Italy, and Canada. Two IncX3 carrying blaNDM were investigated further. Conjugation experiments demonstrated that the IncX3 plasmids could be efficiently transferred to multiple enterobacterial species at frequencies that are comparable or higher than the epidemic IncFII plasmid carrying blaCTX-M (pHK01). In addition, efficient transfer of the NDM plasmids occurred over a range of temperatures. In conclusion, this study demonstrated the important role played by IncX3 in the dissemination of NDM and the occurrence of pNDM-HN380-like plasmids in geographically widespread areas. The high mobility of IncX3 plasmid across different enterobacterial species highlights the ability of this plasmid replicon to be an important vehicle in worldwide dissemination of NDM.

Published
2018
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