More than 2,000 people have been infected with Ebola in the Democratic Republic of the Congo, the health ministry has said, and aid agencies expressed concern over the accelerating spread of the disease.

So far there have been 1914 confirmed and 94 probable cases of infection with the virus, making the outbreak, which was declared in August last year, the second largest in history. New cases are being reported at a rate of around 10 every day. Some 1,346 people have died

It took 224 days for the landmark figure of a thousand confirmed and probable cases to be reached. But it has taken only 71 days to reach 2,000 such cases.

“We are now seeing eight to 20 cases recorded each day, a number that is very likely an underestimate,” said Tariq Riebl, the emergency response director at the International Rescue Committee. “Just a few months ago, we were only seeing three to five cases a day. To see such a spike in cases at this stage in the outbreak means a drastic change is required. This response requires a total and complete reset.”

Violence by armed groups and community mistrust have severely undermined attempts to halt the epidemic, forcing health workers to suspend vaccination and treatment work.

In the latest bout of violence, at least 13 civilians were killed after rebels attacked an area near the city of Beni – where nearly 200 people have died from Ebola – overnight on Monday. Beni’s mayor said two Congolese soldiers also were killed. Last week, soldiers killed 26 rebels from a local militia in a clash near the same city.

The acute insecurity has prevented vaccination teams from getting to some areas, while many people fear going to Ebola treatment centres, choosing instead to stay at home and risk transmitting the disease to carers and neighbours.

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In some areas, health workers are afraid to wear protective equipment because they fear they will be targeted by armed groups, the World Health Organization has said.

“Community members do not trust medical staff and aid organisations, and are not coming into health facilities when they show Ebola symptoms,” said Riebl. “In Butembo, the current epicentre of the outbreak, doctors and nurses are being threatened and health centres attacked regularly, hampering the response and forcing the IRC and other aid agencies to frequently suspend operations.”

Some in the affected communities believe the outbreak is fake news spread by rapacious NGOs and the UN to justify their presence in the country and allow the extraction of valuable mineral resources. Others believe the outbreak was deliberately created for the same reason.

“To say that things are not going well is an understatement. It’s time the international community wakes up to the severity of this crisis,” said Riebl.

Though a decline in the number of new confirmed Ebola virus disease cases was reported last week, experts said the figures should be interpreted with caution given the complex operating environment and fragility of the security situation.

The UN has been urged by charities to ramp up Ebola prevention work in DRC to the highest level of emergency response.

Only three crises – Yemen, Syria and Mozambique – are treated as the equivalent of a level-three response, activated when agencies are unable to meet needs on the ground.

Rory Stewart, the UK’s international development secretary, called for “a global effort”.

“This outbreak is potentially devastating for the region,” he said. “It could spread easily to neighbouring provinces and even to neighbouring countries. We need more people on the ground to help coordinate efforts to contain this deadly disease. We need to act fast, and we need to act generously.”

Last month, the UN announced several measures to strengthen its response, including the appointment of a new emergency coordinator, David Gressly.

Aid agencies, infectious disease experts and the WHO say it will be very hard to bring this outbreak under control, even though they have had vaccines and experimental drugs from the outset.

There is almost no functioning state in much of eastern DRC and an almost total lack of basic services such as power, education, roads or healthcare. The authority of the government only extends to the edges of urban areas.