According to this BBC article, and other US reports, the Endoscopy Centre of Southern Nevada may have infected over 40,000 people. Anyone receiving anaesthesia from March of 2004 to January 2008 could not only have Hepatitis C, but could also be spreading it to others. SCARY!
The warning came after an investigation found the centre had been responsible for "unsafe injection practices".
Imagine waking up this morning to relize that you did in fact recieve anaesthesia from this hospital?
There is not a lot of info. available right now, but I'm sure more is yet to come.
Here's another link to a more detailed report.
Some comments have already suggested that hopefully only a very few of the 40,000 patients will have contracted the disease. Very sad situation. Why would any hospital be still using unsafe practices, it doesn't make any sense.