Long Covid is another public health crisis hidden inside the pandemic, medical experts have warned, with estimates of the patients suffering from the debilitating disease stretching to more than 100m worldwide.
Scientists are in the early stages of hunting for treatments that could ease symptoms, target the still unclear causes, and get people healthy enough to return to work.
A meta-analysis of studies by Penn State researchers found more than half of the 236m people who had Covid-19 when the paper was published — which has since risen to 275m — had symptoms lasting more than six months.
您已阅读10%（596字），剩余90%（5269字）包含更多重要信息，订阅以继续探索完整内容，并享受更多专属服务。