Even as the world fixates on hMPV, a genuine pandemic threat is emerging in the form of H5N1 bird flu. The virus has jumped to cows and spread across the country through dairy herds, poultry farms and even zoos, infecting millions of animals and dozens of people, the vast majority of them farm workers.

Texas Department of State Health Services data showed less than 50 HMPV-positive cases each week in December across the state.

As cases of the HMPV virus continue to increase in the U.S. and in China, here's what you need to know about the virus.

Human metapneumovirus (HMPV), a flu-like virus spreading in China, has been detected in the U.S. Here’s what you need to know about symptoms and treatment.