Haemophilus influenzae type b infections (Hib) are widespread throughout the world. Hib infections may develop under various forms but meningitis is the most frequent one. Hib infections occur in children under the age of five years, and mostly during the first year of life.
- Peltola, H. Worldwide Haemophilus influenzae type b disease at the beginning of the 21st century: global analysis of the disease burden 25 years after the use of the polysaccharide vaccine and a decade after the advent of conjugates. Clinical Microbiology Reviews, Apr. 2000.p.302-317.
- WHO. Introduction of Haemophilus influenzae type b vaccine into immunization programmes. 2000. Accessed January 2018. http://archives.who.int/vaccines-documents/DocsPDF99/www9940.pdf