Why Curbing Travel Is No Cure-All for the Coronavirus

It’s no doubt tempting, in the face of a scary new virus, to shut borders and halt travel. With cases of the pneumonia-like Covid-19 illness topping 80,000 in dozens of countries, governments and companies are considering or have already implemented travel curbs. Yet the World Health Organization discourages “unnecessary restrictions of international traffic” as governments try to limit the spread of the disease.