Health workers wash protective equipment at an Ebola treatment center in Monigi, North Kivu Province, Democratic Republic of Congo, on June 2. DANIEL BUUMA VIA GETTY IMAGES

KINSHASA — At Lwiro Hospital in South Kivu Province in eastern Democratic Republic of Congo, the fight against Ebola has narrowed to a ward, a mobile laboratory and a fragile line of surveillance around one of the less noticed fronts of the outbreak.

While most attention has focused on Ituri Province, the epicenter of the outbreak, health workers in Lwiro village say they have been on maximum alert since the virus reached the area.

The number of confirmed Ebola cases in the DR Congo has risen to 782, including 181 deaths, the Health Ministry said on Sunday. Three cases, including one death, have been confirmed in South Kivu Province.

"We've already recorded two confirmed cases and two suspected cases," said Rene Mbiye, the hospital's medical director. Six patients, including children, are currently under care, he said.