WASHINGTON — As the rate of new Ebola infections in Liberia has slowed, American and Liberian officials are debating whether to build all 17 planned Ebola treatment centers in the country or to shift money from the Obama administration that was planned for the centers into other programs to combat future outbreaks.

The United States announced Monday that it had completed the first of the 100-bed centers, some 40 miles outside Monrovia, in Tubmanburg, and turned over its operation to the International Organization for Migration, which will staff and run the center.

Two other treatment units, in Sinje, to the north of Monrovia, and Buchanan, to the south, will be completed by the end of November, American military officials said. Seven additional treatment units across the country are in various stages of construction.

A 25-bed hospital recently opened outside Monrovia, and American and Liberian military officials are clearing the land for two more units. If all of them go ahead as planned, that would bring the total units built by the American and Liberian militaries working together on the project to 13, or four short of the units promised by President Obama on Sept. 16.