Health care, education, nutrition and other services will cost countries hosting Venezuelan migrants $1.35 billion next year, nongovernmental organizations said on Wednesday, as they called for increased donations from the international community.

The request is the most recent of repeated appeals for help for the 4.6 million Venezuelans who have fled widespread shortages of food and medicine in their homeland in recent years.

Colombia has borne the brunt of the exodus. It is now home to more than 1.4 million Venezuelans, many of whom arrived with little money and in desperate need of basic services.