Khulna, Aug. 18 -- Currency notes move from hand to hand collecting dirt and bacteria that make people very uncomfortable to touch them.

But, according to research by a student of Khulna University, such notes are even more harmful than we think of.

"Taka notes and coins contain bacteria like E. Coli and faecal coliform which are very harmful to health," reveals the research conducted by Nishat Tasnim, a final-year student of the Environmental Science Discipline of the university.

Under the research titled "Study of the Bacterial Contamination on Paper Money and Coins of Khulna City Area," after collecting currency notes and coins from 15 sources in the city over a period of six months, the samples were tested in laboratories.

"In the...