I wonder if anyone can offer advice please about the meningitis vaccine that's offered to children aged around 11-12 in the UK.

One of my patients is doing well on a remedy but I fear that the vaccination which his mother is intending to permit him to have at school soon may challenge homoeopathic treatment.

The patient's mother has had meningitis and she suspects that as an infant, her son - the patient in question - has had meningitis. Is there any test for antibodies which might show that he is already immune?
Anything else I could do to inform or reassure the parent?
The child has a Calc constitution with a tendency to have Bell acutes so I am concerned that he could react.

Many thanks for your advice in advance.