Sheik Umar Khan, Sierra Leone’s only specialist in viral haemorrhagic fevers, died Tuesday after being infected with ebola in the worst outbreak on record, Reuters reports.

He’s credited with treating more than 100 ebola patients, but Khan’s death follows the deaths of dozens of local health workers and the infection of two American medics in neighboring Liberia, highlighting the dangers faced by staff trying to halt the disease’s spread across West Africa.

When the current outbreak started in April, the virus killed as many a 90 percent of those infected, NBCNews reports.

But there is hope.

An ebola clinic in Conakry, Guinea, reports that its mortality rate has fallen to 37 percent. Doctors insist ebola can be beaten if people’s hysteria is replaced with knowledge and action.

Inside the clinic, patients are nursed by doctors whose faces they can’t see.

Temperatures inside the biohazard suits worn by health care workers treating ebola have been recorded as high as 46 degrees celcius (114 degrees farenheit), NBCNews reports.

A traditional healer who caught ebola trying to treat others is fighting the virus in the clinic and winning. Shes doesn’t want NBCNews to show her face because of the stigma of the disease spread by bodily fluids, according to an NBCNews video.

The healer says she feels better now and urges others with symptoms to go to hospital immediately.

Staff treating her and three other patients in the clinic are doused in chlorine when they leave and their gloves and suits incinerated.

“We try to be there and be as present as possible and touch them and comfort them,” said a nurse working in the clinic. “This is quite difficult.”