Colombian President Ivan Duque called Venezuela a public health “time bomb,” and said the lack of reliable information about the status of its neighbor’s coronavirus outbreak was a worry as his administration tries to control its own infections.

Asked if he was worried about Colombia’s lengthy borders with Venezuela and Brazil as a conduit for the virus, even though they are officially closed, Duque told Reuters he was, and said the issue with Venezuela was a lack of information.

“In the case of Venezuela the information is non-existent,” Duque said in an interview. “There’s not good hospital capacity or good epidemiological capacity, for a long time they haven’t had serious vaccination programs.”

“I think Venezuela is a time bomb from the public health point of view.”