MONROVIA, Liberia — Seven people believed to have the Ebola virus have died in recent days in the first deaths reported in the Liberian capital since the outbreak began, a health official said Tuesday.

Deputy Health Minister Tolbert Nyenswah told The Associated Press that brings to 16 the number of people believed to have died from the virus in the West African country. Four of the deaths were confirmed by tests to be Ebola, he said.

The deaths, recorded since June 8, are worrying because no new cases had been confirmed in Liberia in about two months. Nyenswah said the new wave of cases was believed to have begun on May 30. The virus, which causes severe bleeding and high fevers, has continued to ravage neighboring Guinea in that time and has spread to Sierra Leone.

“The first phase of the epidemic was contained,” said Nyenswah. “But because of proximity to Guinea and Sierra Leone, we did not declare outbreak over.”

Other officials have previously downplayed the significance of the virus jumping borders, saying that it is to be expected since people travel and trade frequently across the borders of the three countries.

One of the seven deaths was a woman who had recently traveled from an infected area in Sierra Leone and is believed to have passed the disease on to others in the house where she was staying in Monrovia.

Fear of the disease, which has no known cure, appears to have helped its spread. There have been several reports of relatives taking sick loved ones out of isolation wards; that makes the work of stopping the disease’s spread harder.

At one hospital on the outskirts of Monrovia, staff and patients fled after the death Saturday of a nurse. On Tuesday, President Ellen Johnson Sirleaf visited the hospital and met with a few nurses who came back to the hospital to mourn their colleague. But the beds were still empty, and most of the staff has stayed away. It was unclear if there were any other Ebola cases among the patients who fled.

The outbreak appears to have begun in neighboring Guinea, where the vast majority of the cases and deaths have been recorded. Amara Jambai of Sierra Leone’s Ministry of Health said Tuesday that the number of confirmed deaths from Ebola in his country has risen to 20 in recent days.

The new deaths reported in Liberia and Sierra Leone would push the World Health Organization’s death toll for the current outbreak to over 250. There is no vaccine and no known cure for Ebola, which causes severe bleeding, although proper care can increase the survival rate.