Disease outbreaks, poor sanitation, lack of access to clean water, and disruptions to basic medical care could pose the greatest health risks to the tens of thousands of survivors of Venezuela’s deadly earthquakes, the Americas branch of the World Health Organization said on Thursday. Venezuela has opened more than 80 shelters for those whose homes were destroyed in twin quakes on June 24, with the number of displaced reaching 17,907 by Thursday. Poor shelter conditions could leave many...