Leeches 'catch on' in hospitals in Georgia
2 August 2011 Last updated at 06:18 BST
Leeches have apparently been rediscovered as a form of treatment, after being used in medicine for thousands of years.
By attaching themselves to the body, and sucking blood from a patient, they were thought to bring health benefits.
As they do not have the same side-effects as modern drugs, they are increasingly popular.
The BBC's Damien McGuinness reports from Georgia.