Trends in invasive Haemophilus influenzae type b disease in Australia, 1995–2005
DOI:
https://doi.org/10.33321/cdi.2008.32.32Keywords:
disease surveillance, disease control, Haemophilus influenzae type b, immunisation, vaccination, IndigenousAbstract
The epidemiology of invasive Haemophilus influenzae type b (Hib) disease and its prevention by vaccination is reviewed for the period 1995 to 2005, comparing surveillance data for 1995–2000, when both PRP-OMP and HbOC vaccines were used, with 2000–2005, when only PRP-OMP vaccine was used. Over the whole time period, notifications of invasive Hib disease have declined dramatically. In the second time period, a greater decline in Hib cases was seen. This could be due to either the different vaccines being used, differences in vaccine coverage or both. Although disease incidence has decreased markedly in both Indigenous and non-Indigenous populations, Indigenous people are still at significantly greater risk. It is also concerning that almost 60% of invasive Hib cases in children are preventable, in that they are occurring in unimmunised or incompletely immunised children among whom the incidence of Hib disease is estimated to be about 15 times that of fully immunised children. Australia is now in the third era of Hib vaccine use, during which both PRP-T and PRP-OMP vaccines are used, depending on ethnicity or jurisdiction of residence. Continued enhanced surveillance for invasive Hib disease is important for optimal monitoring of trends into the future. Commun Dis Intell 2008;32:316–325.
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References
Peltola H. H. influenzae in the post-vaccination era. Lancet 1993;341:864–865.
Gilsdorf JR. Haemophilus influenzae non-type b infections in children. Am J Dis Child 1987;141:1063–1065.
Heath PT, Booy R, Azzopardi HJ, Slack MP, Fogarty J, Moloney AC, et al. Non-type b Haemophilus influenzae disease: clinical and epidemiologic characteristics in the Haemophilus influenzae type b vaccine era. Pediatr Infect Dis J 2001;20:300–305.
Brook I, Gillmore JD. Expression of capsules by Haemophilus influenzae in mixed infections. J Infect 1995;30:219–222.
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. Clin Microbiol Rev 2000;13:302–317.
Hanna JN, Wild BE. Bacterial meningitis in children under five years of age in Western Australia. Med J Aust 1991;155:160–164.
McIntyre PB, Leeder SR, Irwig LM. Invasive Haemophilus influenzae type b disease in Sydney children 1985–1987: a population-based study. Med J Aust 1991;154:832–837.
Brotherton J, Wang H, Schaffer A, Quinn H, Menzies R, et al. Vaccine preventable diseases and vaccination coverage in Australia, 2003 to 2005. Commun Dis Intell 2007;31 Suppl:viii–S152.
Bisgard KM, Kao A, Leake J, Strebel PM, Perkins BA, Wharton M. Haemophilus influenzae invasive disease in the United States, 1994–1995: near disappearance of a vaccine-preventable childhood disease. Emerg Infect Dis 1998;4:229–237.
Hammitt LL, Block S, Hennessy TW, DeByle C, Peters H, Parkinson A, et al. Outbreak of invasive Haemophilus influenzae serotype a disease. Pediatr Infect Dis J 2005;24:453–456.
Millar EV, O’Brien KL, Levine OS, Kvamme S, Reid R, Santosham M. Toward elimination of Haemophilus influenzae type B carriage and disease among high-risk American Indian children. Am J Public Health 2000;90:1550–1554.
Millar EV, O’Brien KL, Watt JP, Lingappa J, Pallipamu R, Rosenstein N, et al. Epidemiology of invasive Haemophilus influenzae type A disease among Navajo and White Mountain Apache children, 1988–2003. Clin Infect Dis 2005;40:823–830.
Scheifele D, Halperin S, Law B, King A, Halperin S, Morris R, et al. Invasive Haemophilus influenzae type b infections in vaccinated and unvaccinated children in Canada, 2001–2003. CMAJ 2005;172:53–56.
Horby P, Gilmour R, Wang H, McIntyre P. Progress towards eliminating Hib in Australia: an evaluation of Haemophilus influenzae type b prevention in Australia, 1 July 1993 to 30 June 2000. Commun Dis Intell 2003;27:324–341.
Hanna JN. The epidemiology of invasive Haemophilus influenzae infections in children under five years of age in the Northern Territory: a three-year study. Med J Aust 1990;152:234–6, 238, 240.
Peltola H, Käyhty H, Sivonen A, Mäkelä H. Haemophilus influenzae type b capsular polysaccharide vaccine in children: a double-blind field study of 100,000 vaccinees 3 months to 5 years of age in Finland. Pediatrics 1977;60:730–737.
National Health and Medical Research Council. The Australian Immunisation Handbook. 8th edn. Canberra: Australian Government Department of Health and Ageing; 2003.
Public Health Committee, National Health and Medical Research Council. Surveillance case definitions. Canberra: Australian Government Printing Service; 1994.
Communicable Diseases Network Australia. Interim surveillance case definitions for the Australian National Notifiable Diseases Surveillance System. Version 1, 1 January 2004. Available from: http://www.health.gov.au/internet/main/publishing.nsf/Content/cda_surveil-nndss-dislist.htm/$FILE/casedef.pdf Accessed March 2008.
Rank C, Menzies RI. How reliable are Australian Childhood Immunisation Register coverage estimates for indigenous children? An assessment of data quality and coverage. Commun Dis Intell 2007;31:283–287.
Sahai H, Khurshid A. Statistics in Epidemiology: Methods, Techniques, and Applications. 1st edn. CRC-Press; 1996.
Degani N, Navarro C, Deeks SL, Lovgren M. Invasive bacterial diseases in northern Canada. Emerg Infect Dis 2008;14:34–40.
Galil K, Singleton R, Levine OS, Fitzgerald MA, Bulkow L, Getty M, et al. Reemergence of invasive Haemophilus influenzae type b disease in a well-vaccinated population in remote Alaska. J Infect Dis 1999;179:101–106.
Singleton R, Hammitt L, Hennessy T, Bulkow L, DeByle C, Parkinson A, et al. The Alaska Haemophilus influenzae type b experience: lessons in controlling a vaccine-preventable disease. Pediatrics 2006;118:e421–e429.
Banerji A, Bell A, Mills EL, McDonald J, Subbarao K, Stark G, et al. Lower respiratory tract infections in Inuit infants on Baffin Island. CMAJ 2001;164:1847–1850.
Kovesi T, Creery D, Gilbert NL, Dales R, Fugler D, Thompson B, et al. Indoor air quality risk factors for severe lower respiratory tract infections in Inuit infants in Baffin Region, Nunavut: a pilot study. Indoor Air 2006;16:266–275.
Kolos V, Menzies R, McIntyre P. Higher pertussis hospitalization rates in indigenous Australian infants, and delayed vaccination. Vaccine 2007;25:588–590.
Menzies R, McIntyre P, Beard F. Vaccine preventable diseases and vaccination coverage in Aboriginal and Torres Strait Islander people, Australia, 1999 to 2002. Commun Dis Intell 2004;28:127–159.
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