Identification of asymptomatic Entamoeba histolytica infection by a serological screening test: A cross-sectional study of an HIV-negative men who have sex with men cohort in Japan.

<h4>Background</h4>Amebiasis, caused by Entamoeba histolytica, is spreading in developing countries and in many developed countries as a sexually transmitted infection. Here, we evaluated the efficacy of serological screening to identify asymptomatic E. histolytica infection as a potenti...

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Main Authors: Yasuaki Yanagawa (Author), Rieko Shimogawara (Author), Misao Takano (Author), Takahiro Aoki (Author), Daisuke Mizushima (Author), Hiroyuki Gatanaga (Author), Yoshimi Kikuchi (Author), Shinichi Oka (Author), Kenji Yagita (Author), Koji Watanabe (Author)
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Published: Public Library of Science (PLoS), 2022-04-01T00:00:00Z.
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042 |a dc 
100 1 0 |a Yasuaki Yanagawa  |e author 
700 1 0 |a Rieko Shimogawara  |e author 
700 1 0 |a Misao Takano  |e author 
700 1 0 |a Takahiro Aoki  |e author 
700 1 0 |a Daisuke Mizushima  |e author 
700 1 0 |a Hiroyuki Gatanaga  |e author 
700 1 0 |a Yoshimi Kikuchi  |e author 
700 1 0 |a Shinichi Oka  |e author 
700 1 0 |a Kenji Yagita  |e author 
700 1 0 |a Koji Watanabe  |e author 
245 0 0 |a Identification of asymptomatic Entamoeba histolytica infection by a serological screening test: A cross-sectional study of an HIV-negative men who have sex with men cohort in Japan. 
260 |b Public Library of Science (PLoS),   |c 2022-04-01T00:00:00Z. 
500 |a 1935-2727 
500 |a 1935-2735 
500 |a 10.1371/journal.pntd.0009793 
520 |a <h4>Background</h4>Amebiasis, caused by Entamoeba histolytica, is spreading in developing countries and in many developed countries as a sexually transmitted infection. Here, we evaluated the efficacy of serological screening to identify asymptomatic E. histolytica infection as a potential epidemiological control measure to limit its spread.<h4>Methodology/principal findings</h4>This cross-sectional study was carried out between January and March 2021 in an HIV-negative men who have sex with men (MSM) cohort at the National Center for Global Health and Medicine. Serological screening was performed using a commercially available ELISA kit. For seropositive individuals, we performed stool polymerase chain reaction (PCR) to determine current E. histolytica infection. We performed E. histolytica serological screening of 312 participants. None had a history of E. histolytica infection prior to the study. The overall E. histolytica seropositivity was 6.7% (21/312), which was similar to that found by the rapid plasma reagin test (17/312). We identified current infection in 8 of 20 seropositive participants (40.0%) by stool PCR.<h4>Conclusions/significance</h4>Our serological screening approach constitutes a potentially practical epidemiological strategy. Active epidemiological surveys, in combination with an effective screening strategy for asymptomatically infected individuals, should be applied to help reduce sexually transmitted E. histolytica infections. 
546 |a EN 
690 |a Arctic medicine. Tropical medicine 
690 |a RC955-962 
690 |a Public aspects of medicine 
690 |a RA1-1270 
655 7 |a article  |2 local 
786 0 |n PLoS Neglected Tropical Diseases, Vol 16, Iss 4, p e0009793 (2022) 
787 0 |n https://doi.org/10.1371/journal.pntd.0009793 
787 0 |n https://doaj.org/toc/1935-2727 
787 0 |n https://doaj.org/toc/1935-2735 
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