CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '91356ee59a1d8de9',cH: 'Ak5FlCp6HdI_2M47ndDXMg_ADTDe61N5L.w36ZcgXHI-1739791698-1.2.1.1-N19SJ8LxbRKNpzW0cDb_wW_NL0ItPT1Sx3M8kxgT4hfCc0jThBFefDgCRCXeMEvW',cUPMDTk: "\/abstracts\/search?q=STEC&__cf_chl_tk=_LTcv_Wze6.X0cMfWj7LBOpsJpBSxULWy8caFKovDxs-1739791698-1.0.1.1-dWLXXXD35_UFBEqU6ObXiv7segtzWCP4Y2sMDXH5h.4",cFPWv: 'b',cITimeS: '1739791698',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=STEC&__cf_chl_f_tk=_LTcv_Wze6.X0cMfWj7LBOpsJpBSxULWy8caFKovDxs-1739791698-1.0.1.1-dWLXXXD35_UFBEqU6ObXiv7segtzWCP4Y2sMDXH5h.4",md: "M0RlQqKtXWESwzttcoeXUY5RF.yH3FTSihDgDSuRHzo-1739791698-1.2.1.1-C.Cfat1JIN_lHn0DEhBa361Dv.a9Cbrs2_sfmBgU3Dyj7Hqr8LpdsGcwx58hxcBX1yitxxN..gCTu5PCxWfdPwUzLQUe.SnIPCTKk7DnwZAZ8NMHnx8LbXDUB_nl8YeFhHaMVcPzEY_zA0n2Q524P6T01WesNrKDPPdsO5nuQy7modAkOe73TYqXAfxywKEWeop1dOg7D5pIq2xziz6NOP3gHilD9kYjoYLNv_z3Fq_wp5iL1YYakHNy9l6m1_0KAR652bhqoU81nZJbhY976_JuAlfcpRByjRRPW5EiZ9knS0EFj6zEalfOIWUazzkPqkxS_ioNsB7FZbSHgz7B8Pr1RPF_6DxE3d4s9HUnQdJnMXGqXXGD5_lYSDTH2RU61oSvlDjZReve6TuE7_PxD9ynYkgD5fxjWTtha5sP9Ot6aQCB7J3kYJxibRz_1S5UrlWqLXVYv2uTdTA7vtpOrDprwYUXTPL4Pzrw1cXt4gDDJfRIratZwqNunHwrWdImFFDp0HLL4HBmZdgQmMrl0YMfg779mfgYnq5Fi.RAYOIMyACDi5t1Ajv1rvvu8oLRTdT3Z6VSruJiY4swoZnwbui_u3gfZNPG5td.WxFVZcVemdGJzJjXUsmf2it34l6Ndj7rGEu2KPNkSxQNYAcRyrw4iEVXNidCP.tkJZoKnprnC_cChQaLaGHmL_Ij0PcWr2W_IA3RBqhzrTZdSB1OwqhgxwkJeiNxgeqAd_.ymXlYLnhpzvt3Rby3HcJsLgps8X.hJO2.5TZ3hL7QE1cuz1GJGC8YUDv8MJiP5orfjcMO.aX2f2cnNGKd9NRoavMqqCxqaWUt46VAwFsRXFi6CXupgQkVwRzH1zJojFqntlM9Q1FFUyfgiSBE71iH54bqGT9_VgpvMLdfW_tFfdlJibMhjauIozavNZkzchUlaB0XfE2ckNELxMKtFhi_4UWrEvNyeIDmyhbjhGlMwe56DRS0UsENgMeVAfbHz_peTWaqF.oLp1RKsEchAlKZYTa.iMLIKPaGN4RVBJYZ5iEc.msgIrur3ASzJ3ZYZe8qcwy13READC2dGHbOx96s4aSul1dwBZKyLqSZm6bg9eHy2ev5JJXIJ6FSTFxRNQL.YMeDbt50CvHgzF0ose_tj9GjwZd_YvOhsvyhLkFFuLvUf1d.TK.mdc4nSh1fyi.ymQ_hyX5bQN_MqtmW_k.nj8Bv7UKLHCugd2gqaohoIEc.abp6jtuMpsNXAYvWsrPOb8cXG41mSk19zmTu9Zbbohzy9hJ9JYhTB1BHpY8hm0cHhWpWZoVx6miWaXR8mBDYEKQRr76.AUg_tU2dwDOgxYOV_93uS8BLNAnartn7rMzHPlrxgiVhFQO5BP6C2ACNF6WcS5jFcRqfGv4tZimBwydTUqDnF7RZkmyqfEtbo4Cq5bRJrwz8zlVD7BORy3OKoN2ZS0_BHxle1cqhNXXUY5ymOfA79vdCt0yJcEg1zmf.W1EMfVyzVJA.JOxvW0BySufwku60xaz6tGSq3oK2Ozm1ZwRP8bFZNL_rsTbEqpUhnfQjso4JgPSWQ8oBHm2UxovY0go0Hrd.9o_MfZKYaI1HYL8X6XCxh4X1ARWh47zBcEymrFN6UjIsXNzUnlQfUcQuwacpAHqnin1lYlC2aFkDLzHIEYton7.gPlOXYbut343pkIjK5Uh62BMPi9sNESMNcG.1CNYJ7OnQ_CdpxKKersWqP1LPH6k5earuoMDy1aMMzANVWbxl_yiCRo02pXXmQGN3ROx1Wj_RozhbpwV5Sk0UlFWQBrInHyxpuQi3Am9exRHmuM733RAJMlRrtSMa4oSW9E.K5BEm_42AcorGWBynwhtqvarJZ6Pl96gZcXkgBbdBqRmX1muuCbGDIvodTXSbguAISmYorcBPFJ9i",mdrd: "NKX5UT5KvCynXOfHa_icL.XauUYKUo6tGcijlg34Sa0-1739791698-1.2.1.1-pYZRXhEqPywgSkPIB3s5M4hoAaGKRy7h3H4OPUfjMXp494MdsH91fuVrWFV8f7bNX0jLHGcQSreGVoU6iw9vUR.W8L8U7N0OLMctWRxK.u8bdUPBFqv6UjuelU15TjvaDT.CPKI9yKjPNxH_flr1QKksP4dX5PYw6JZl_3ixang0mk.pMQFwNowAUSJfYpx1r3Mtwcxd8v.tNV25Wf3Li66ZQ6KkIAeXPMY9zaZFicygz2uejeBO3DAPIJaHsWvEYXcltqCywWkz50IaeDtnojNlPe0Ql7V.XCGF0LyHger.R90poYnbD7P9JyRS3T2dh.Nb3Zw3Ue3tKt.Vutvk_nSrmt7W9tLblIRO95_ogdHQrE3X4mYCsBjWQjgy1b8d7C2oXLQ_LbnpOmMwobJUGmRaLZqVwMHonwicow0xte6mqK2PRkYRSXaT.0uR4nrmzI2tHyB8u4tB9PhQskBkpapzbfW6YP3QLRaH4r6huVvupYxToRVDNdmO1x0pzqEs7wCUZS8hOqfKqhSBBE_Apbkunspp_hTKdrJFjK6t_AUzgR_BNSD9It6uncayk2N1E9ND7uREbv5QcgJFb0WBr5YeJAePE7QjgYH_1uvm9A6j7HziJaQ5EFYvygwEAsdM54gaHvbKESZnk65vheIB11CylNhQAsBKDoCEAILMT.3lX4kDl7ws32YpTOCsYcMygikec5kdWjFUqrhadkZGMDUhsSmgM5CmwtBK2NW8lhl0vq0YhI.kzNZlPTlsofplWOq_mZHQbUz2LisBXbGRniqo66jL9BCB.pEVUKK8jfwjxXghCcS4xy8BRGtGF_xafyBsLzivhWSSfb.2tl8x_d3jq68k83Iod9M8N1uU_dfGuII5XXqhtqld0Yfjb5Lrl3eIBRccoWs3mmARGoqQb6Y7S41_NhDx4j.buNYa1lOKkrU5eUYqzV0Vvl4UTPN6eyEe0qTSVlVhDOhsdVtrJdQ4Bf6h_crNLgigU36ulCfFz6IqrUk4XIplQni4HOEeqn_2u2JntWjCLlQIWC9adXDZTWD9xhEw2XU0oKB8yztvboHGeIl7b47HS5nFMHgGmONkrFHjChOX7GRmqaT6MUubMecImjB_ou0dcsRAQWitssysF7fZuxz.pFbLG.Wg4msCucbP3ZDJFM2g2DVRMjtZWhmqQr.KoNeHoLK3ClRvPmPW3aVJLuKpw3QRAwYE8Am.CcpqAjDCP6en6Ru8vNcpw4OgImbqnDkqLoVdd3OnKX6sFxOk9x5MHWMEwtYH.LSB5xswRfASm6_c8Fv5oLR_rRF6TiFcmhlCHShGvZIx6_UU0IAosVconOj8tkYeSE5djRjDhPQV0G7t.3kO79ZGfOaZeCad.I2f38LwGyWPwENIUQeyqeSHQzyh.yYBhDP5nA1xHXLA8wxqtzYZDL.eLIfFSzT9vzaCXHFObgl.Q7MJ6IUHHaFslKJ3nuvDCKX055L9z8kyIYsGuL9BF4.FK__Y4bwfYanVf2Hz27DWXrZw_2lEnRdoVAbPc5j1uz0Rg2Cc4kIrgT7xGqvnmCOsIyfJtNGPxG9OaZQt24GtZ76JgXPtFrj6SEkh3wohkfxHdadBAeneYTZJ65R6WT49hho6modjuNXTaZFDm1_5_iW1m0.7gqtI5RVcpNBDwltNYXYFzfvZbClU6_MV8FDNGnQ2b231RoN3PKL5D75v.nOz3cXKtJd4sSUZShAs3VefH.HzTrMH7k2W647lyAE3GU_yxlPu03bs4175vLb8dWYf48iT2.fY8Yu2yWyQLEytNvfoAV949xJou_cStIFNzsqCsyoQ6g4rAzPXua9d6Yz1rTvS6FJpDpBbx9iTHIH1FUbWgVIATIDSevSKcrsHTjQR_K0SGUGFBk2_XG08pydPFZcMdFd3sBPeW6CUOxEac0griv2sL2tMws6eAX8YeVidpRlYSZgfYJu3OZ79hqGzg3hZwTDwUjzl71Ja"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91356ee59a1d8de9';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=STEC&__cf_chl_rt_tk=_LTcv_Wze6.X0cMfWj7LBOpsJpBSxULWy8caFKovDxs-1739791698-1.0.1.1-dWLXXXD35_UFBEqU6ObXiv7segtzWCP4Y2sMDXH5h.4" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>