My local VA just updated their operating system last year.
They were running WindowsXP long after they stopped offering updates.
That is not an uncommon experience, particularly with the medical field.
There are a lot of cash strapped hospitals, and given the choice between upgrading an Xray machine or an operating room, and upgrading all the computers and the enterprise wide OS, the OS gets shoved to the back burner.
To make it worse, vendors who sell software often are not keeping their versions compatibility up to the latest OS, and I have seen plenty of situations where the move to a new OS cannot be done because some important application still isn't validated with the newest ones. Some important application won't support the move, and you have to shell out an additional $250K to a million to get some new app that does, plus all the interconnectivity...it is a huge burden.
Health Care can be a strange place for IT, that is for sure.