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Meta-Analysis
Copyright: ©Author(s) 2026.
World J Virol. Mar 25, 2026; 15(1): 118273
Published online Mar 25, 2026. doi: 10.5501/wjv.v15.i1.118273
Table 1 Characteristics of the studies included in meta-analysis
Ref.
Country
World bank category
Time-frame
Number of positive samples
Total number of samples
Diagnostic method used
Age
Al-Ali et al[37], 2011LebanonLower-middle income2010079RT-PCRBoth
Borkakoty et al[60], 2023IndiaLower-middle income2014-201624407RT-PCR< 5 years
Cao et al[57], 2021ChinaUpper-middle income2015-2019301181RT-PCR< 5 years
Chaimongkol et al[38], 2012ThailandUpper-middle income20075160RT-PCR< 5 years
Chaimongkol et al[42], 2014ThailandUpper-middle income20075160RT-PCR< 5 years
ThailandUpper-middle income20102109RT-PCR< 5 years
ThailandUpper-middle income20110298RT-PCR< 5 years
Chen et al[41], 2013TaiwanHigh income2004-20116755RT-PCRBoth
Cheng et al[36], 2010ChinaUpper-middle income2001-2007101195RT-PCR< 5 years
Guntapong et al[25], 2004ThailandUpper-middle income2002-200312321RT-PCR< 5 years
Gupta et al[43], 2015IndiaLower-middle income2010-20125169RT-PCR< 5 years
Gupta et al[50], 2018IndiaLower-middle income2009-20101144EIA or RT-PCR< 5 years
Hansman et al[24], 2004ThailandUpper-middle income2000-200113105RT-PCR< 5 years
Jin et al[30], 2008ChinaUpper-middle income2006-2007101110RT-PCR< 5 years
Jin et al[34], 2009ChinaUpper-middle income2005-20076544ELISA, RT-PCR, or PCR< 5 years
Kawano et al[26], 2007JapanHigh income2000-2006262RT-PCR< 5 years
Khamrin et al[28], 2007ThailandUpper-middle income2002-20043248RT-PCRBoth
Khamrin et al[35], 2010ThailandUpper-middle income20055147RT-PCR< 5 years
Khamrin et al[49], 2017ThailandUpper-middle income2012-20146889RT-PCRBoth
Kumthip et al[54], 2020ThailandUpper-middle income2010-2018503057RT-PCRBoth
Lasure and Gopalkrishna[47], 2017IndiaLower-middle income20076778RT-PCR< 5 years
IndiaLower-middle income20086RT-PCR< 5 years
IndiaLower-middle income20093RT-PCR< 5 years
IndiaLower-middle income20102RT-PCR< 5 years
IndiaLower-middle income20114RT-PCR< 5 years
Li et al[33], 2009Hong KongHigh income20082209RT-PCRBoth
Li et al[45], 2015ChinaUpper-middle income2011-20135508RT-PCR< 5 years
Li et al[46], 2016ChinaUpper-middle income2011-201230461RT-PCR< 5 years
Liu et al[44], 2015PhilippinesLower-middle income2012-201329417RT-PCR< 5 years
Mai et al[61], 2023VietnamLower-middle income2016-2021502317RT-PCR< 5 years
Malasao et al[31], 2008ThailandUpper-middle income2000-200210296RT-PCR< 5 years
Mohammadi et al[55], 2020IranUpper-middle income2015-20170103RT-PCR< 5 years
Monica et al[29], 2007IndiaLower-middle income2001-200418350RT-PCR< 5 years
Nakanishi et al[32], 2009JapanHigh income2003-200515877RT-PCRBoth
Nguyen et al[27], 2007VietnamLower-middle income2002-200341010RT-PCR< 5 years
Phengma et al[59], 2022ThailandUpper-middle income2019-20206675RT-PCR< 5 years
Pongsuwanna et al[48], 2017ThailandUpper-middle income2006-2008121141RT-PCRBoth
Abdel-Rahman et al[56], 2021QatarHigh income2016-201821901Film array gastrointestinal panel kitBoth
Supadej et al[52], 2019ThailandUpper-middle income2015-201716843RT-PCRBoth
Thongprachum et al[40], 2013ThailandUpper-middle income20060156RT-PCR< 5 years
Trang et al[39], 2012VietnamLower-middle income2007-20087501RT-PCR< 5 years
Wu et al[58], 2021TaiwanHigh income2008-2011484055RT-PCRBoth
TaiwanHigh income2016-2017562449RT-PCRBoth
Xue et al[53], 2019ChinaUpper-middle income2013-201711569RT-PCRBoth
Yan et al[23], 2004ChinaUpper-middle income2001-20032207RT-PCRBoth
Yu et al[51], 2018TaiwanHigh income2007-20115396RT-PCR< 5 years
TaiwanHigh income2012-20264441RT-PCR< 5 years


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