The global death toll from the new coronavirus topped 3,000 on Monday, as airlines cancelled or reduced flights and stock markets swung wildly. More people died in China, Iran and the United States from the virus, which has now infected nearly 90,000 people with cases in more than 60 countries. With fears of a pandemic on the rise after the virus first emerged in China late last year, the World Health Organization urged all countries to stock up on critical care ventilators to treat patients with severe symptoms.