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Volume 25, Number 11—November 2019
Dispatch

Swimming Pool–Associated Vittaforma-Like Microsporidia Linked to Microsporidial Keratoconjunctivitis Outbreak, Taiwan

Jung-Sheng Chen, Tsui-Kang Hsu1, Bing-Mu HsuComments to Author , Shih-Chun Chao1, Tung-Yi Huang, Dar-Der Ji, Pei-Yu Yang, and I-Hsiu Huang
Author affiliations: National Chung Cheng University, Minhsiung Township, Taiwan (J.-S. Chen, B.-M. Hsu, T.-Y. Huang); Cheng Hsin General Hospital, Taipei, Taiwan (T.-K. Hsu); Show Chwan Memorial Hospital, Changhua, Taiwan (S.-C. Chao, P.-Y. Yang); National Chiao Tung University, Hsinchu, Taiwan (S.-C. Chao); Central Taiwan University of Science and Technology, Taichung, Taiwan (S.-C. Chao); National Yang-Ming University, Taipei (D.-D. Ji); National Cheng Kung University, Tainan, Taiwan (I.-H. Huang)

Main Article

Table

Comparison of BLAST results from environmental strains in a field study conducted after a microsporidial keratoconjunctivitis outbreak, Taiwan*

Strain Sample source Top BLAST hit (GenBank accession no.) Maximum identity, study strain/reference (%) Reference source
Xindian_1_Water
Standard swimming pool
Vittaforma corneae strain HotSpring-E1-o (KY245918)
470/473 (99)
Environmental
Xindian_3_Water
Standard swimming pool
Vittaforma corneae strain HotSpring-E1-o (KY245918)
467/473 (99)
Environmental
Xindian_10_Water
Foot wash pool
Microsporidium sp. BVOR4 (FJ756182)
438/472 (93)
Environmental
Xindian_14_Water
River
Enterocytospora artemiae isolate Ea_monica20 (JX915755)
477/483 (99)
Artemia franciscana
Xindian_15_Soil
Park near the resort
Vittaforma corneae strain HotSpring-C3-o (KY245925)
430/467 (92)
Environmental
Xindian_16_Water
Sink in the park
Uncultured microsporidia clone Chula_Myositis 1 (JN619406)
420/469 (90)
Clinical
Xindian_17_Soil
Park near the resort
Nosema sp. FCG-1468 (LC033883)
429/450 (95)
Honey bee
Xindian_18_Soil
Park near the resort
Sporanauta perivermis (KC172651)
432/485 (89)
Marine nematode
Xindian_20_Water
Wastewater from the resort
Unikaryonidae sp. JI-2011 (JF960137)
456/486 (94)
Curculionidae
Xindian_21_Water
Wastewater from the resort
Uncultured microsporidia clone Chula_Myositis 1 (JN619406)
425/474 (90)
Clinical
Xindian_22_Soil(U)
Soil in the wastewater flow
Vittaforma corneae strain HotSpring-F2-o (KY245925)
453/473 (96)
Environmental
Xindian_22_Soil(D)
Soil in the wastewater flow
Vittaforma corneae strain HotSpring-F2-o (KY245925)
450/472 (95)
Environmental
Xindian_23_Soil(U)
Park near the resort
Vittaforma corneae strain HotSpring-F3-o (KY245925)
458/472 (97)
Environmental
Xindian_23_Soil(D)
Park near the resort
Vittaforma corneae strain HotSpring-F2-o (KY245925)
448/474(95)
Environmental
Xindian_24_Soil
Parking lot near the resort
Vittaforma corneae strain LVPEI.BP235FR_11 (KP099409)
453/475 (95)
Clinical
Xindian_25_Water
Pavement rainwater
Endoreticulatus sp. Melnik (KU900486)
455/471 (97)
Euproctis chrysorrhoea
Xindian_26_Water
Foot wash pool
Vittaforma corneae strain LVPEI.BP235FR_11 (KP099409)
453/475 (95)
Clinical
Sw_MK_outbreak Patient Vittaforma corneae strain LVPEI.BP235FR_11 (KP099409) 472/472(100) Clinical

*Top BLAST hit indicates the closest reference species that matched the environmental strains using BLAST search (http://blast.ncbi.nlm.nih.gov/Blast.cgi). Maximum identity represents the percentage identity between the environmental strains and the closest reference species. The fifth column shows the isolated source of the closest reference species.

Main Article

1These authors contributed equally to this article.

Page created: October 15, 2019
Page updated: October 15, 2019
Page reviewed: October 15, 2019
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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