The Ebola virus has killed more than 660 people in Africa, and doctors and volunteer health workers are becoming desperate in the battle against the deadly disease. 

Every day that these volunteers and emergency doctors spend on the area, they are witnesses to incredible and horrific scenes.

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"You can be helping somebody by getting them a juice, or a glass of cold water, or whatever he wants because you know really he has very little chance to survive, and then less than an hour later he is dead," Mr. Naoufel Dridi, 41, said.

These health care workers are the first-line people who are exposed to Ebola patients and the risk of them getting infected is very high.

But health workers continue to endeavour to save lives and help prevent the outbreak from spreading.

According to the World Health Organization (WHO), at least 660 people have died from the illness across Guinea, Sierre Leone and Liberia.

The Ebola outbreak in West Africa is considered as the deadliest and by far the biggest outbreak since 1976.

One of the reasons considered is that west African governments are poorly-equipped in combatting the virus.

TagsEbola Virus, second wave, health care workers, Kent Brantly