Three Polish doctors and six nurses face criminal prosecution after a number of homeless people died following medical trials for a vaccine to the H5N1 bird-flu virus.
The medical staff are being investigated over medical trials conducted on as many as 350 homeless and poor people last year. Authorities claim that the alleged victims received money to be tested with what they thought was a conventional flu vaccine, but was actually an anti bird-flu drug.
The director of the homeless center in the area said that 21 people from his center died this year, a figure well above the average of about eight.
The suspects said that the all those involved knew that the trial involved an anti-H5N1 drug and willingly participated.