Final Ebola patient discharged in Sierra Leone as countdown begins to country being declared free of disease

Adama Sankoh contracted the illness after her son died from it

Adama Sankoh who contracted Ebola after her son died from the disease late last month stands with health officials the moment after she was discharged (AP)

The final Ebola patient has been released from hospital in Sierra Leone – beginning a 42-day countdown to the country being declared free of the virus that has killed nearly 4,000 people here.

Adama Sankoh, who contracted Ebola after her son died from the disease late last month, was discharged and presented with a certificate President Ernest Bai Koroma.

"The Ebola fight is not yet over - go and tell members of your community that," the president said. "Go back to your community and continue to live life as you used to."

Sankoh, whose 23-year-old son contracted Ebola in the capital, Freetown, before traveling to his home village, thanked everyone who provided her care during her illness. She also vowed to be the last person infected in Sierra Leone with the virus.

"Although my child died of Ebola I am very happy that I have survived today," she said upon leaving the Ebola treatment centre in Mateneh village on the outskirts of Makeni, the president's hometown.

bystanders listen to a street preacher calling on people to raise their hands and "Wave Ebola Bye Bye" (AP)

If Sierra Leone is declared free of transmission of the Ebola virus it would leave just one country with the disease - Guinea - after an epidemic that has killed more than 11,200 people since late 2013.

But first Sierra Leone must go 42 days - equal to two incubation periods of 21 days - without another Ebola case in order for the World Health Organization to make such a declaration. It's a benchmark that Liberia reached in May only to then experience a brief reappearance of cases.

AP