Chinese hospitals are overwhelmed by a mysterious viral outbreak, drawing comparisons to early COVID-19 days. The CDC is monitoring reports of increased cases of human metapneumovirus (hMPV) both in China and the US. Chinese state media highlights rising infections among children under 14, though data reliability remains uncertain. While hMPV symptoms resemble those of the common cold, it can lead to severe hospitalizations for young children and elderly individuals; no vaccine or cure exists yet.