GOMA, Congo (AP) — Congolese soldiers and police will enforce hand-washing and fever checks now that the deadly Ebola outbreak has been declared an international health emergency , authorities said Thursday.

Soldiers and police will “force” people who resist taking the key steps to help contain the disease that has killed more than 1,600 people in the past year , said the outbreak response coordinator at Congo’s health ministry, Dr. Aruna Abedi.

“It’s not possible that someone refuses to wash their hands and have their temperature checked at a very critical moment in this outbreak,” Abedi told reporters in Goma, the city of more than 2 million people where a first Ebola case was announced early this week. The major regional crossroads is on the Rwanda border and has an international airport.

The World Health Organization’s rare emergency declaration Wednesday night for the second-worst Ebola outbreak in history came after a WHO expert committee declined on three previous occasions to recommend it, to the impatience of some health experts who for months had expressed alarm.

Congo’s increased use of soldiers and police could bring objections from some residents and health workers in an outbreak taking place in what has been called a war zone.

This outbreak is like no other, unfolding in a turbulent part of northeastern Congo where dozens of rebel groups are active and wary communities had never experienced the disease before. Health workers have faced misinformation and even deadly attacks that have hampered the critical work of tracing contacts of infected people and deploying an experimental but effective Ebola vaccine.

Wednesday’s declaration quickly led to fears among some Congolese authorities and residents that governments might close borders or take other measures that could hurt the local economy. Congo’s health minister has resisted the characterization of the outbreak as a health emergency.

Rwanda’s government said surveillance measures at the border would be tightened, but traffic was flowing normally through the border on Thursday.