Am. J. Trop. Med. Hyg., 77(4), 2007, pp. 683-684
Copyright © 2007 by The American Society of Tropical Medicine and Hygiene
SHORT REPORT
Increased Detection Rate of Strongyloides stercoralis by Repeated Stool Examinations Using the Agar Plate Culture Method
Tetsuo Hirata*,
Hiroshi Nakamura,
Nagisa Kinjo,
Akira Hokama,
Fukunori Kinjo,
Nobuhisa Yamane, AND
Jiro Fujita
Department of Medicine and Therapeutics, Control and Prevention of Infectious Diseases, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan; Department of Clinical Laboratories, Ryukyu University Hospital, Okinawa, Japan; Department of Endoscopy, Ryukyu University Hospital, Okinawa, Japan
ABSTRACT
To clarify the efficacy of repeated stool examinations by the agar plate culture method for the detection of Strongyloides stercoralis infection, 4,071 stool samples collected from 2,406 patients > 50 years of age in Ryukyu University Hospital were examined. The cumulative detection rate of S. stercoralis infection was 4.7% (112/2,406). At the first, second, third, and beyond fourth examinations, the detection rates were 3.6% (86/2,406), 1.5% (12/786), 2.6% (10/392), and 2.0% (4/198), respectively. From these results, the cumulative detection rate was estimated to be 7.4% when three stool samples were examined for all patients. Our study showed that repeated stool examinations increase the sensitivity of detection of S. stercoralis infection.
Received March 20, 2007.
Accepted for publication June 22, 2007.
* Address correspondence to Tetsuo Hirata, 207 Uehara, Nishihara 905-0125, Japan. E-mail: h400314{at}med.u-ryukyu.ac.jp
Authors addresses: Tetsuo Hirata, Akira Hokama, and Jiro Fujita, Department of Medicine and Therapeutics, Control and Prevention of Infectious Diseases, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, Japan, Telephone: 81-98-895-1144, Fax: 81-98-895-1414, E-mails: h400314{at}med.u-ryukyu.ac.jp, hokama-a{at}med.u-ryukyu.ac.jp, and fujita{at}med.u-ryukyu.ac.jp. Hiroshi Nakamura and Nobuhisa Yamane, Department of Clinical Laboratories, Ryukyu University Hospital, 207 Uehara, Nishihara, Okinawa, Japan, Telephone: 81-98-895-1319, Fax: 81-98-895-1453, E-mails: nakahiro{at}jim.u-ryukyu.ac.jp and nobie{at}med.u-ryukyu.ac.jp. Nagisa Kinjo and Fukunori Kinjo, Department of Endos-copy, Ryukyu University Hospital, 207 Uehara, Nishihara, Okinawa, Japan, Telephone: 81-98-895-1144, Fax: 81-98-895-1414, E-mails: nagisa-k{at}med.u-ryukyu.ac.jp and kinjofuk{at}med.u-ryukyu.ac.jp.
Copyright © 2007 by the American Society of Tropical Medicine and Hygiene.