A recent increase in cases of the human metapneumovirus (hMPV) in China has been misrepresented on social media as evidence of a new virus spreading in the country with some posts claiming it prompted China to declare a state of emergency.

The human metapneumovirus is reportedly surging in China, but should Americans be concerned? Here's what to know about HMPV symptoms and more.

Most HMPV infections are mild, resembling bouts of the common cold. But severe cases can result in bronchitis or pneumonia, particularly among infants, older adults and immunocompromised people. Patients with pre-existing lung conditions, such as asthma, chronic obstructive pulmonary disease or emphysema, are at higher risk of severe outcomes.

Human metapneumovirus (HMPV) cases are surging in China and people are worried about another pandemic. Should they be? HMPV is a upper respiratory tract

HMPV is a virus that will lead to a mild upper respiratory tract infection—practically indistinguishable from flu

The WHO has downplayed concerns over a rise in HMPV cases, saying outbreaks are normal during winter in the Northern Hemisphere.

An expert has warned that the new virus currently spreading in China could reach "other parts of the world." The human metapneumovirus (HMPV), which has seen a recent surge in cases across China, has prompted the country’s Centers for Disease Control to call for additional measures to curb its spread.