A cholera outbreak in Haiti has killed more than 700 people and sickened more than 11,000. (Ramon Espinosa/Associated Press)

A Calgary faith-based charity is sending a medical team to Haiti to help deal with the worsening cholera epidemic.

This as dozens of cases of the infection are being reported in the country's capital, Port-au-Prince.

Jeff Adams with Samaritan's Purse said two nurses and a doctor from Calgary are leaving for Haiti on Friday morning.

"They're part of a group from across North America that includes … 10 doctors and 15 nurses that are going to be arriving down there over the next two or three days to be part of Samaritan's Purse's work."

According to the World Health Organization, the death toll has climbed sharply in recent days, claiming more than 700 lives .

Registered nurse Helen Adams said she felt compelled to help.

"I happened to have no shifts next week. I felt called to go."

Mary Ann Way, another Calgary nurse travelling to Haiti, was there when the cholera epidemic began.

"It was something I'd never seen before," she said. "I'd read about it. I was shocked by the amount of water coming out of these people."

Way said cholera can be fatal within just a few hours if the patient is a child or in a weakened condition.

Samaritan's Purse is asking for more volunteers from the medical community, and Adams said the groups also needs financial help.

"We have to get the people down there, we have to house them, and then we need the medical equipment."

Adams said the group hopes to send another team of medical personnel to Haiti at the end of the month.