Overseas
- World Health Organization (WHO)
- European Centre for Disease Prevention and Control (ECDC)
- Centers for Disease Control and Prevention (CDC), US
Fact Sheet and Publications
- World Health Organization (WHO). Fact sheet
- European Centre for Disease Prevention and Control (ECDC). EU case definition (June 2018)
Infectious Disease Textbook
- Centers for Disease Control and Prevention (CDC), US. Epidemiology and Prevention of Vaccine-Preventable Diseases (Pink Book) – Chapter on Meningococcal Disease (August 2021)
- World Health Organization (WHO). Immunization, Vaccines and Biologicals
Vaccination