The World Health Organization was holding an emergency meeting on Friday to discuss the recent outbreak of monkeypox, a viral infection more common to west and central Africa, after over 100 cases were confirmed or suspected in Europe.

In what Germany described as the largest outbreak in Europe ever, cases have been reported in at least nine countries – Belgium, France, Germany, Italy, the Netherlands, Portugal, Spain, Sweden and the United Kingdom - as well as the United States, Canada and...