HMPV: What to know about China's human metapneumovirus cases BBC.comWhat is really behind the mystery new virus gripping China and the world The IndependentCDC monitoring possible spike of HMPV cases in China Fox NewsViral disease HMPV is on the rise among kids in China — what is it? Livescience.comWhat is human metapneumovirus, are cases surging in China, and should we be worried?