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: "waset.org",cType: 'non-interactive',cRay: '913593feff8cce16',cH: '_VdcNifPBXbceDm.Lq74pnQmMRox0w7diVr6LodOXRA-1739793218-1.2.1.1-A8aC26xpfkejPmd9c6a4vKwrdc_9bg7fnpms6JjAmSsT718McCfUmgJ1C3NJFpb2',cUPMDTk: "\/vaccines-and-vaccination-conference-in-december-2025-in-paris?__cf_chl_tk=yL6M6qxMPHH6epUa8kx1WzcwZBAvmPO2ghVVldr0bLs-1739793218-1.0.1.1-aNLJ9XboAr5v2n35Rc6fjhkJUWSsdpk34YcC4lXp2nQ",cFPWv: 'b',cITimeS: '1739793218',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/vaccines-and-vaccination-conference-in-december-2025-in-paris?__cf_chl_f_tk=yL6M6qxMPHH6epUa8kx1WzcwZBAvmPO2ghVVldr0bLs-1739793218-1.0.1.1-aNLJ9XboAr5v2n35Rc6fjhkJUWSsdpk34YcC4lXp2nQ",md: "PDY1c_wZPfKiET3_bWLyYPPGN.MiLeK.XsC8jngPAdw-1739793218-1.2.1.1-T7ckg33xLMHREaAUdUPqdDpBVIIaHzWOALcbLC0LR0XN.RSK7I5T_B_7VE01vE2ETwJCixLl9hEecm8y6LDfrIHyKMwQnEjhzB8MeAIBKksM.OJn6KZtvTZ_HzaCLKLk04ApHDvEXcB65m6zJt7X7zJxsuk3ZOCtdemnzovlP3kOgirSS8ZyfLHF1kypfveIM2oBqA0rT.pnhzkxGLZ9NypJkJofHbysSPNqI7ofpXk6R6_vBV3nbtXn0g6URwkLKuRxP3_VE6.ZNRto7R4p3ddYAkmCfRA_MskgftbStPk.HpsCk3WDuPEqMwlirxodR_Cvf66CWn6o1cerjw_HNqiHKf5mxpNzHle0tSZXnc8ogTROOspOdams3tjcgLFR0Wz4s1Z4TgL7AJaJYOl5txHZIKAEfNJnAgxSXrfM4eu2SdDG6Qv0OJNyPneqkSpdhdr2yLoQztxBv7FrgTnOMxGafSxMI57rTmHEEYrwTFsW.mZPSI64mF1Azw5.42zW08cP3oHSIqMApicwLg8SckdTk.T25OkeMJ2WNbOKwmhGrOlxh5heaLVaSYD3C1vvVPXp0Lyoq57ZMCbwgKeN9B253I9yo3s1pqIzb9uPuNM_Qd6obqPSLFxy6_CA8qaDJU6CH8uLb7iL796WAOk_dpiNCA5iuIkvqBE5ilJzuBBiaSVVcEb0YFWhuhtnD2bHUmRA1qyuxQp4qLujopAT6q3jrOv1NsRDCbPH4H8Xl3r6hbhb6Ug6yvY7YS0GvN04B5Ugrc9ko4qu5HECj1Sp_TmCj2_bzuVvSvUTl7m3616TeavSpIWGyhCXFtTsgi0Xsxgzbmp053wg3HcwKKJ4Q1_jXwp8ooSFJTcWT0oHLnqoAHMv3o3J56qyoBWAw5VGGI4vdrKV8cI6OJ2pxt6f3WgAm2jqxTPwWgT1W0Xtgdr4HQ8EYrgr82NpIlQBEOEJynCudgW_KEdA9pjJLdXrNXx.GPYgIy8vSfxFc4Dz0PpgiaH9eRujFgl8BMMIspNS0rhGecueuPNCO1ivgkONbH2dRJnfCWmsIP01Z_duGHv3JLmbJwVC9ClmGG_H3_K3qDDXoDx90wKUH0ezxf23A3VywLTzQ9moxaVtI59N2N8PRi1ADXs5In4zqUt1npGdQx1mxtDBa3UD6wom3n1zsqjzxqDUSQzGz1RDPFtVzUMvxAgGT5cju3TbxgemH3MlhLLeF9UNgywdh8J.p1c9OshlMLFekVHEgq6HodZfjzSPdxY.PRWcuD0pGV2AYvUdNnbYo31UydhDitXM7hRSMh2vAnkQK7dJ0ePv75ImHuaqe1L4MumBLshhKeh9pdRRrh_ns11wSRwiU0rFn.DWY03wc0SdPJLBJNBdIByE.mI9ToBlakuzYFIJ1LUMJXyqvKB9fOU_w7_ASckqy8DqN.6wVVtwXUkhoHVSp01hGKEI5nukKACqpkC90koXa39aVPxEGy9RFPDZMbifaRZqDv7BlkaSMH2AwDFF5RIRdfLr3pP726yY6MJlqTiW1E7HugBWCyXVxZNZ9havDZjZhp4ZNvotZS5c.o4TsLrQmM0J3kE0Y5qAkinHyBJRpqIe0z_kqZnUBqhEXurLVVQeZvwNVTeQL0Uq4yLKKSjT3eXYH9PHqP1DTebjoHqMI.nSJzL1wg0zJhBH7pxfOHqIOgLp3dbiwt8i8sXWqJ3bsq7ZJMDU77tqifMvHPD4tb_znrAW_yu06vpgm3Y_kcF2lh1ZkXzF0vb63VXNet35m0OIHP3PCMiDGV.kHbjjWDv.ktevR8z4jxa512AtDwANEqB_fdZdogG.S5kBsUpuErIpts6DakqOBiYMHf_YZkKhtHUnNNekC3_pWzghiH0RR8yy4FR5LKqlbJ7kuwzBD9VEnWJd2RykjwbqR1txbb3KzVfFor9PeoAd6gznFIkPgALPst2wzyeafiMGqPzKJV0xveItUh8MN9UovCwsBLHvtHgppgAQWU_Dh8t3lXMbFg",mdrd: "DHfVktbYTDHW1530HCnN9rYsxzLs9bXaLivcvI9impM-1739793218-1.2.1.1-GUugjKF3C_8HPfSLsEx6XAXTTLnRoUm_x205tLcXMtZwD0YgRI53yf3lx9vfoL.WJQYkLtHKBNbqF0f9JZcDPex_D1UEGAoBdoefQAji3RxVeHtq3M9kDf1rd0P1J1qga.B_krSEkWjl.5unA2pW_bdTMV0.03GxANiuMFT7okNjWd2tmjJszM3JVpf95UDGohMGHYvVqX8qaNipuXXdqgqDvAIBVz1OhPvYBjZ.wvOFGocL5AQXEi9.U6yUJnvlpxHe_OyYH3xKTI8d3bQsui_qsPF5REnBrCG70KqcW0hr6hlQTL5v13MyHsyBaEXn5K3ySKLdYw29TASxHzruoQq6UFlr7ngpf.JH1uCQEGJAubbPvmx_hc2sUDhjW2b0ngvCnsAhAzUHAO_Vgx9ztZxBbugj1H3rvKuK8hip63DYM3vdRv7neMujiKq0JgIEc_gEcQelkiGwYKGLI9TXzSniKlty8jOgVVYxz4YYbaaRAHq4YL4hboTvyWtQ4OdFURc9KtRXYraLoKVmGN6pwPySjVXjKidHCa83HPOhUUiXJ4_ju5BvY0txckcVzFvP82XHWPWLJtj3af_4ER8RqAO6yli48LGwkpPreTw1SjyetxKhEHEhsXKKMR.PCaqBXTerh1mZOhZXxLqKHZ3sQVh0IIbNCWA_xYlYg3_AjOb2_FaYuc5quwnlwMFGZf5hJEWyz1cje0LYU9ahz2EZStcw2nUC1FRp7spZcf8iykMgZL9idmzT_xeDxPpc9skzy1A2zvLcyn3YyIeK5qs6Z5W9wjLUSJ8JeAp_CRKFNgcrdqRmXQ2Xjh8BAUzOfDnYr2AycyCfjzpiuKUBV6oC8CEzqsRe26wwvZiluRsSiiYuQnATT7m01USjLpk7_VkdNcatahhisjf2VMp1nzTApsJYBz35bV2YYeLXQtIjeHxI38sbpIXC9QeGpmkcvZ_2tvRwPegDzC8yNxbb8lTNlszeetfLctJaAK_qHMvNEJEBG6_xoZO9UasFU2nU.6S9QgzxNhlhoAaDmVYH7C9HSV1m4uel4sKG0ZvcmdEverJTEg29aSD3tShdFxtJwB4ZY_FDN016gEy5UEs4dE27t1i2n3jvyASEpdOwcPssxGr1k5T_JLzjontdVKcJ60jr2F_jbi8PXFkPlg7Gu4Ue.W73hAJnzm.pRF1Sk6cpEtr29Dqz0m.o2EVTCKJpY3HTCAWkFjtZ0GrmeMT5lMFL5bstqDmc9Aaq2_6ApYat8S7TfZXv6pcysniPjXUku7kMH9glxcQmjuchhKevO01pzAOHbz8JQ_yd4Q0Mr0lmEHfW3fPB1PeRXirZIEft_JVS54p.YHEhFfLYzTJNTQ1GFMQJHjmIfsxu0RbP9YYOu0WPDk_cf3qwuRDklCEo.vjiQl3otinyhcRcocZ7AAnIKMwa_Cjd4cNsdVh.C0NHJ6aGh9TUdqxICzbK1MhGU_IqjQur0QWXnBn4xCMIh0PZXtvVsnG6QQ5Co.YLHPGHPnFhQM.Hxf2vQ3bj6.8BV9_pOsH24Jl5_XGTkRnSC.fWzVxr6x0379cCeIUNDXm9xiAyGoZLmR3Z196qAYUIf7AzvxNqsnl9jJ3UD_bookhXNX0Fnfgq8eUG0pCLCjjsLn.s2m7iR.nNIu4pojeicw1gu7oKFtlfpPNOMYUbd91_R183gOENj8PNlhKunSyhmOGtifiI5CtsIEYZ54xx2xtfK9cbjhi2PyPo44GmzuIbQCot4E3i5DgdyOEckcWeRD0J3e69kEWLMTlhaETOrtov1wWTRRzA8Ujy7BL3bCXs5nZvme.O9N9XwcIxUKw9HNWBnNdrVpsJJx3TT_1XcBBFdfhN_BXRNFwwvVFi1hPJ432h8I0Vg_I0eA8R8TCtavBWGVA_f4eWti1Eb8lKSsFZqCIfPchqAzbFesK3p1.9Xn.wBfpinjPijgIHBqepSgM"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913593feff8cce16';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, "\/vaccines-and-vaccination-conference-in-december-2025-in-paris?__cf_chl_rt_tk=yL6M6qxMPHH6epUa8kx1WzcwZBAvmPO2ghVVldr0bLs-1739793218-1.0.1.1-aNLJ9XboAr5v2n35Rc6fjhkJUWSsdpk34YcC4lXp2nQ" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>