Newsletter Sign Up Continue reading the main story Please verify you're not a robot by clicking the box. Sign Up You agree to receive occasional updates and special offers for The New York Times's products and services. Concerns were raised this month when diphtheria, a potentially deadly disease that is under control in much of the world, made a resurgence in Yemen, affecting at least 120 people. The World Health Organization said diphtheria vaccines were among the supplies that had earlier been blocked. The blockade was later loosened, but until this weekend had kept key Houthi-held ports sealed.

Source: New York Times November 26, 2017 21:56 UTC