But even if a cure was discovered, he said it would take a long time to reach shelves.
"We are talking years, because the pipeline for a new drug is at least 10 years," he said.
Severe hookworm infections can cause problems such as iron deficiencies, but he said there were few risks when the infection was controlled.
The new grant, which was organised through the Bowel and Liver Trust, will allow more specific research on the microbes in the samples, which could lead to other angles on the work.
He said about 70 Cantabrians had gone to an information evening last month, and about 20 had joined the trial.
Spaces are still available in the trial programme.