Of, pertaining to, or caused by meningococci(adjective)
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Use "meningococcal" in a sentence
"It costs less than 50 cents a dose and provides 10 years of immunity against a form of meningitis called meningococcal-A, which infects the lining around the brain and spinal cord and can kill or disable its victims."
"A first dose of what's called meningococcal conjugate vaccine between ages 11 and 12, with a booster dose at 16."
"The university and the Dane County Coronor's office believe he had a form of meningitis known as meningococcal disease, a rare and serious bacterial infection that can quickly cause grave illness or death."