Since the beginning of the outbreak more than six months ago, the Sierra Leone Health Ministry reported only 10 confirmed Ebola deaths here in Freetown, the capital of more than one million people, and its suburbs as of Sunday — a hopeful sign that this city, unlike the capital of neighboring Liberia, had been relatively spared the ravages of the outbreak.

But the bodies pouring in to the graveyard tell a different story. In the last eight days alone, 110 Ebola victims have been buried at King Tom Cemetery, according to the supervisor, Abdul Rahman Parker, suggesting an outbreak that is much more deadly than either the government or international health officials have announced.

“I’m working with the burial team, and the first question I ask them is, ‘Are they Ebola-positive?’ ” said Mr. Parker, adding that the figures were based on medical certificates that he had seen himself. The deaths are carefully recorded by name and date in a notebook headed “Ebola Burials.”

A burial team supervisor who drove up with fresh bodies echoed Mr. Parker’s assertion. “Any body we collect is a positive case,” said Sorie Kessebeh. “All the bodies that we are bringing in are positive.”

Beyond the many worrisome trends in the Ebola epidemic seizing parts of West Africa — the overflowing hospitals, the presence of the disease in crowded cities, the deaths of scores of health workers trying to help — another basic problem has stymied attempts to contain the disease: No one seems to know how bad the outbreak really is.

The World Health Organization acknowledged weeks ago that despite its efforts to tally the thousands of cases in the region, the official statistics probably “vastly underestimate the magnitude of the outbreak.”

Here in Sierra Leone, the government just finished an aggressive national lockdown to get a handle on the epidemic, ordering the entire country to stay indoors for three days as an army of volunteers went door to door, explaining the dangers of the virus and trying to root out hidden pockets of illness.

Still, the Health Ministry spokesman insisted that the epidemic was not as bad as the flow of bodies at the cemetery suggested.