Neisseria meningitidis


Droplet / Contact Precautions

General Information

Encapsulated Gram-negative diplococci

Normal flora. Humans are the reservoir.

Quadrivalent vaccine prevents disease by serogroups A/C/W-135/Y - most disease in BC unrelated to travel is serogroup B.

Occurs in outbreaks particularly in crowded setting.

Colonizer and cause of invasive disease:

  • Meningitis

  • Meningococcemia


  • Pneumonia

  • Septic arthritis

  • Pericarditis

  • Conjunctivitis

  • Others

Generally of little significance when cultured from nonsterile sites e.g. genital, pharynx.

Invasive meningococcal disease is notifiable - call Public Health ASAP.

Contact and droplet precautions until 24hrs of appropriate antimicrobial therapy.

Prophylaxis may be required for close contacts and healthcare workers; call Medical Microbiologist or Officer of Health.