What we know about HMPV, the common virus spreading in China
Reports of a surge in respiratory virus cases in China have evoked dark echoes of the start of the Covid-19 pandemic almost exactly five years ago.But despite the superficial similarities, medical experts say this situation is very different and much less worrisome.The Chinese cases are believed to be infections with human metapneumovirus, known to doctors as HMPV. Here's what we know so far:What is HMPV?It is one of several pathogens that circulate around the world every year, causing respiratory diseases. HMPV is common, so common that most people become infected as children and may get several infections over the course of their lives. In countries with cold months HMPV may have an annual season, much like influenza, while in places closer to the Equator it circulates at lower levels th...