Telegraph By Matthew Day in Warsaw Last updated: 11:17 PM BST 02/07/2008 Three Polish doctors and six nurses are facing criminal prosecution after a number of homeless people died following medical trials for a vaccine to the H5N1 bird-flu virus. A person is given an injection: Homeless people die after bid flu vaccine trial in Poland 21 people died after being given the vaccine The medical staff, from the northern town of Grudziadz, are being investigated over medical trials on as many as 350... read more