The villagers were taken ill after they had attended a feast on Thursday, they said.
The affected persons were admitted to the sub-divisional hospital in Chhatrapur, about 25 km from here today, an official said.
Samples of stool and water were collected from the village and would be sent to the laboratory of the microbiology department at MKCG Medical College and Hospital here, said Chief District Medical Officer (CDMO) R Jagadeesh Patnaik.
"At present, 19 patients are undergoing treatment at hospital," he said.