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  • Warning: Undefined array key "title" in template_preprocess_links() (line 681 of core/includes/theme.inc).
    template_preprocess_links()
    call_user_func_array() (Line: 261)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 129)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->block_content() (Line: 431)
    Twig\Template->yieldBlock() (Line: 77)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 68)
    __TwigTemplate_8ddd1c6f3541c31d1c369c6b70d92a4e->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 112)
    __TwigTemplate_8d7f898e4b10d5677efe1b06f2f201a1->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 178)
    __TwigTemplate_33002299742a0245432f11e8804e8e72->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 504)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 47)
    __TwigTemplate_cffe8b5ad7354ebecb31f6932c1d115f->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 124)
    __TwigTemplate_046d7df494f066c9aa5bfb55cd2d2e9c->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 158)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 159)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
    call_user_func() (Line: 111)
    Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 191)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 185)
    Drupal\cloudflare\CloudFlareMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "title" in template_preprocess_links() (line 737 of core/includes/theme.inc).
    template_preprocess_links()
    call_user_func_array() (Line: 261)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 129)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->block_content() (Line: 431)
    Twig\Template->yieldBlock() (Line: 77)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 68)
    __TwigTemplate_8ddd1c6f3541c31d1c369c6b70d92a4e->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 112)
    __TwigTemplate_8d7f898e4b10d5677efe1b06f2f201a1->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 178)
    __TwigTemplate_33002299742a0245432f11e8804e8e72->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 504)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 47)
    __TwigTemplate_cffe8b5ad7354ebecb31f6932c1d115f->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 124)
    __TwigTemplate_046d7df494f066c9aa5bfb55cd2d2e9c->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 158)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 159)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
    call_user_func() (Line: 111)
    Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 191)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 185)
    Drupal\cloudflare\CloudFlareMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "title" in template_preprocess_links() (line 681 of core/includes/theme.inc).
    template_preprocess_links()
    call_user_func_array() (Line: 261)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 129)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->block_content() (Line: 431)
    Twig\Template->yieldBlock() (Line: 77)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 189)
    __TwigTemplate_8ddd1c6f3541c31d1c369c6b70d92a4e->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 112)
    __TwigTemplate_8d7f898e4b10d5677efe1b06f2f201a1->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 178)
    __TwigTemplate_33002299742a0245432f11e8804e8e72->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 504)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 47)
    __TwigTemplate_cffe8b5ad7354ebecb31f6932c1d115f->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 124)
    __TwigTemplate_046d7df494f066c9aa5bfb55cd2d2e9c->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 158)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 159)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
    call_user_func() (Line: 111)
    Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 191)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 185)
    Drupal\cloudflare\CloudFlareMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "title" in template_preprocess_links() (line 737 of core/includes/theme.inc).
    template_preprocess_links()
    call_user_func_array() (Line: 261)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 129)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->block_content() (Line: 431)
    Twig\Template->yieldBlock() (Line: 77)
    __TwigTemplate_b0bd40619431c5be03308201ec861505->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 189)
    __TwigTemplate_8ddd1c6f3541c31d1c369c6b70d92a4e->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 112)
    __TwigTemplate_8d7f898e4b10d5677efe1b06f2f201a1->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 178)
    __TwigTemplate_33002299742a0245432f11e8804e8e72->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 504)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 47)
    __TwigTemplate_cffe8b5ad7354ebecb31f6932c1d115f->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 484)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 124)
    __TwigTemplate_046d7df494f066c9aa5bfb55cd2d2e9c->doDisplay() (Line: 387)
    Twig\Template->yield() (Line: 343)
    Twig\Template->display() (Line: 358)
    Twig\Template->render() (Line: 35)
    Twig\TemplateWrapper->render() (Line: 33)
    twig_render_template() (Line: 348)
    Drupal\Core\Theme\ThemeManager->render() (Line: 491)
    Drupal\Core\Render\Renderer->doRender() (Line: 248)
    Drupal\Core\Render\Renderer->render() (Line: 158)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 159)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
    call_user_func() (Line: 111)
    Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 191)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 185)
    Drupal\cloudflare\CloudFlareMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
Measles Vaccination Campaign in Brussels
A doctor administers a measles vaccination in Brussels, Belgium, 29 June 2023.
© MSF/Marin Driguez/Agence VU'
Vaccination is one of the most effective ways of preventing deadly diseases. And yet getting vaccines to where they're needed can be difficult.

High vaccine prices, import restrictions, logistical issues, and a challenging vaccination schedule are some of the reasons why many people - particularly children - miss out on being fully vaccinated against a host of dangerous diseases. As a result, 1.5 million children die each year from vaccine-preventable diseases. MSF teams vaccinate millions of people every year, either as part of routine vaccination, or in response to an outbreak of disease.

In 2023, MSF teams provided
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