I'm in my MSN program and EVERY semester have come down with horrible sinus infection or cold. Before clinicals I seemed to have my rhinitis (vasomotor) somewhat under control but NO MORE. Currently battling what is at least my fourth URI this year (likely another 1 or 2 in there) and only thing I know that's changed is I'm working in clinics where people bring every viral illness in.
I wash my hands. I use hand sanitizer constantly. I take a good multivitamin.
What seems to help you? Or is this something new people to clinics go through?