Another leading Ebola doctor has died after contracting the disease while fighting to save other lives, a Sierra Leone official revealed on Wednesday as others gradually began pulling medical personnel out of the country.

According to Presidential adviser Ibrahim Ben Kargbo, Dr. Sahr Rogers, had been helping in the battle against the virus in a clinic in eastern Sierra Leone's Kenema when he caught the disease.

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He is the third Ebola doctor who has succumbed to the virus since its outbreak in February, following two others including Sierra Leone's top epidemiologist Dr. Sheik Humarr Khan who had also been working with patients in Kenema.

News of his death was revealed after another Ebola scientist, who was already transferred to Germany, had been diagnosed with the disease.

A Senegalese epidemiologist was diagnosed with Ebola virus on Wednesday though reports stated that he only works on coordinating outbreak responses from a lab and does not directly treat Ebola patients.

He is currently under the care of the University Medical Centre Hamburg-Eppendorf medical staff led by Dr. Stefan Schmiedel who declared that they will concentrate 'supportive care' on the patient, such as fluid management and fever reduction instead of using experimental drugs.

On Tuesday, WHO announced that it will pull out the rest of the Senegalese doctor's team from Kailahun explaining that the members of the team are exhausted and stressed out, especially after one of them got sick.

Canada has also declared that it will evacuate its mobile laboratory team from the Ebola-stricken country.

The team will remain in voluntary isolation during the 21-day incubation period though they have shown no symptom of the illness.

According to World Health Organization Communications Director Christy Feig, reports on health workers getting infected with the disease might 'scare off' other international health personnel.

She explained that this may eventually lead to a possible scarcity of manpower to aid the battle against the outbreak as over 120 medical workers have died from the disease.

The Ebola virus can be spread through direct contact with infected body fluids, thus rendering health workers most susceptible to the disease due to close proximity with the patients.

Tagsoutbreak, Sierra Leone, WHO, Virus