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.

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The attention being paid to a Chinese outbreak of a virus often confused with flu is a sign that respiratory infection tracking is improving.

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

Have you seen reports about a “new” virus spreading in China? HMPV was first identified in 2001. Here are the symptoms it causes.

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.

Most cases of HMPV are mild, but infection can increase health risks—particularly for the elderly, young children and people with low immunity. In extreme cases, it can lead to severe complications.