______ declared Thursday that the ______ was a global health emergency, acknowledging that the disease now represents a risk beyond China, where it emerged last month. The move reversed the organization’s decision just a week ago to hold off such a declaration. Since then, WHO officials said, thousands of new cases in China and clear ______ in several other countries — now including the United States — warranted a reconsideration of that decision by the agency’s expert committee. The WHO’s declaration — officially called a ______ — does not have the force of law. But it ______ to all United Nations member states that the world’s top health advisory body thinks the situation is ______ .