What are some dangers of the meningococcal vaccine?

Nothing serious: No serious side effects so far.

Allergic reaction/f: Like with any vaccine one can get mild to severe allergic reaction to Meningococcal vaccine, mild redness or slight pain at the site of injection, a small percentage develope fever which goes awau in 48 hours severe ractions are very rare and most reactions are mold there have been some reports of guillen barre syndrome but it is so rare that no one is convinced that vaccine is causing it.