I have no doubts that it was improper sanitation. One of my younger sisters (28yo now) has lived in China for the past 3 years. She states then when she goes to the hospital everything is given IV. They don't give her a PO Rx for infections, fever, etc, it's all IV. She states that they reuse their needles. Needless to say we have made sure she gets clean needles to take with her and use when she goes to the hospital, d/t the hygienic standards there. I pray that these nurses get freed, but the reality is that such a government like bulgarian would, probably, never admit their wrong doing. I hope I'm wrong!