The Democratic Republic of Congo has begun Ebola vaccination trials for frontline health workers involved in responding to the country’s outbreak, Al Jazeera reports. The programme is focused on people working at the centre of the health crisis, placing them among the first groups to receive the trial vaccine.

The vaccine being used is Ervebo, which has also been administered during previous Ebola outbreaks. Health officials are hoping the vaccine will prove effective against the strain involved in the current crisis, according to Al Jazeera.

Frontline health workers are directly involved in efforts to manage the outbreak, making them a key group for the vaccination trials. The rollout will allow officials to assess the vaccine’s performance among workers operating in areas affected by the disease.

Al Jazeera did not provide details on the number of workers taking part, the duration of the trials or when officials expect to assess the results. The source also did not specify the location of the vaccination programme or identify the strain involved beyond describing it as the current strain.

The trials represent an effort to use an established Ebola vaccine while health authorities respond to the ongoing crisis. Their outcome will determine how effectively Ervebo works against the strain currently circulating in DR Congo, based on the hopes expressed by health officials cited by Al Jazeera.