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Volume 13, Number 9—September 2007

Dispatch

Sympatric Occurrence of Taenia solium, T. saginata, and T. asiatica, Thailand

Malinee T. Anantaphruti*†1, Hiroshi Yamasaki†1, Minoru Nakao†, Jitra Waikagul*, Dorn Watthanakulpanich*†, Supaporn Nuamtanong*, Wanna Maipanich*, Somchit Pubampen*, Surapol Sanguankiat*, Chatree Muennoo*, Kazuhiro Nakaya†, Marcello O. Sato†‡, Yasuhito Sako†, Munehiro Okamoto§, and Akira Ito†1Comments to Author 
Author affiliations: *Mahidol University, Bangkok, Thailand; †Asahikawa Medical College, Asahikawa, Japan; ‡Universidade Federal do Tocantins, Araguaína, Brazil; §Tottori University, Tottori, Japan;

Main Article

Table

Characteristics of 24 taeniasis cases, Thailand, 2002–2005*

Patient
No. scolex/proglottids 
expelled Morphologic identification of scolex Preservative used Molecular identification
No. Sex Age, y Year
1 M 60 2003 1 scolex without hook Taenia saginata NA NT
2 F 34 2005 3 scolices with hooks T. solium NA NT
3 M 55 2002 Segment without scolex† Formalin T. solium
4 M 29 2002 6 scolices with hooks T. solium Formalin T. solium
5 F 38 2003 Segment without scolex† Formalin T. solium
6 F 46 2002 Segment without scolex† Formalin T. solium
7 F 28 2002 2 scolices with hooks,
1 scolex without hook T. solium,T. saginata AFA
AFA T. soliumT. asiatica‡
8 M NK 2002 Segment without scolex† Ethanol T. solium
9 M 47 2004 1 scolex with hooks T. solium Ethanol T. solium
10 M 7 2004 Segment without scolex† Ethanol T. solium
11 M 43 2004 3 scolices with hooks T. solium Ethanol T. solium
12 M 10 2004 Segment without scolex† Ethanol T. solium
13 M 40 2003 Segment without scolex† Ethanol T. saginata
14 F NK 2002 Segment without scolex† Ethanol T. saginata
15 M 40 2003 1 scolex without hook T. saginata Ethanol T. saginata
16 M 55 2004 1 scolex without hook T. saginata Ethanol T. saginata
17 F 30 2004 1 scolex without hook T. saginata Ethanol T. saginata
18 M 13 2004 1 scolex without hook T. saginata Ethanol T. saginata
19 M 45 2005 1 scolex without hook T. saginata Ethanol T. saginata
20 F 42 2003 3 scolices without hook T. saginata Ethanol T. asiatica‡§
21 F 28 2005 1 scolex without hook T. saginata Ethanol T. asiatica‡
22 M 60 2005 1 scolex without hook T. saginata Ethanol T. asiatica‡
23 M 32 2005 1 scolex without hook T. saginata Ethanol T. asiatica‡
24 M 37 2005 1 scolex without hook T. saginata Ethanol T. asiatica‡

*Year refers to year when specimen was collected; NA, not available; NT, not tested; Formalin, 10% formalin; AFA, alcohol-formalin-acetic acid; NK, not known; ethanol, 80% ethanol.
†These segments without scolices were not examined for morphologic identification.
‡These cases (boldface) were identified as T. saginata morphologically but were confirmed to be T. asiatica by mitochondrial DNA analysis.
§Three worms fixed separately.

Main Article

1These authors contributed equally to this article.

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