The coronavirus outbreak has sickened more than 101,700 people. At least 3,453 people have died, all but 411 in mainland China. As the map below shows, the disease has been detected in at least 83 countries.
Many of the cases across Europe have been traced back to Italy, which has one of the world’s largest outbreaks. At least 4,636 people have tested positive.
While the outbreak is a serious public health concern, most people who contract the coronavirus do not become seriously ill, and only a small percentage require intensive care. Older people and those with existing health conditions, like heart disease or diabetes, are at higher risk.