Here is what I posted about meningicoccal vaccine at the time (I obviously got confused b/w a and b strains in my previous post):

BTW for those who are interested, the health dept guy who I asked numerous questions of said that the menn C vaccination is effective in preventing menningicoccal c in 19/20 kids (so isn't 100%). And the only two strains of menningicoccal that are usually seen in Aus are B and C and there is no vaccine for B. However B is usually (but not always) less severe than C. They don't yet know what strain this baby has.
On examination, I stand corrected on the nature of the vaccination. The one used here in Australia DOES only protect against the C-strain.

However I think your health professional was misinformed. At one stage there were quite a few deaths resulting from C-strain infections, but worldwide and overall the B-strain is understood to be much more lethal. If you do a search for meningococcal on Wikipedia, it has some easy-to-digest information.