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Published on: November 5, 2019
[Meningitis and encephalitis in Poland in 2006]
Agnieszka Kicman-Gawłowska1, Irena Chrześcijańska, Paweł Stefanoff
1Zakład Epidemiologii, Narodowy Instytut Zdrowia Publicznego - Państwowy Zakład Higieny, ul. Chocimska 24, 00-791 Warszawa.
Abstract:
In Poland, 3 693 cases of neuroinfections were reported in 2006, of which 989 had bacterial aetiology, 1 874--viral aetiology, and 512--other or unknown origin. The etiological agent was determined in 455 (46%) cases of bacterial neuroinfections. Among them Neisseria meningitidis was found in 148 cases, Haemophilus influenzae type B (Hib) in 39 cases and Streptococcus pneumoniae in 119 cases. An increasing trend in meningococcal infections incidence has been observed in 2006, and a substantial decrease of Hib incidence, related to increasing vaccination coverage. Viral neuroinfections incidence in 2006 increased compared to year 2005. Etiological factors of central nervous system aseptic infections were established only in minor proportion of cases--3% of meningitis and 20% of encephalitis. Among confirmed cases, there were 317 cases of tick-borne encephalitis and 31 cases of herpetic encephalitis. Tick borne encephalitis incidence increased in 2006 (0.83), compared to 2004 - 2005. Most of the cases were reported from endemic areas of north-eastern part of the country.
Insights
In 2006 Poland saw 3,693 neuroinfections. Bacterial cases decreased due to vaccination, while viral infections and tick-borne encephalitis rose, particularly in northeastern regions.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Context:
- Neuroinfections pose a significant public health challenge in Poland.
- Surveillance data from 2006 provides insights into the trends of various neuroinfection types.
Purpose:
- To analyze the incidence and etiological factors of neuroinfections in Poland during 2006.
- To identify trends in bacterial and viral neuroinfections, including specific pathogens and vector-borne diseases.
Summary:
- In 2006, Poland reported 3,693 neuroinfection cases: 989 bacterial, 1,874 viral, and 512 of unknown origin.
- Bacterial neuroinfections identified Neisseria meningitidis (148), Streptococcus pneumoniae (119), and Haemophilus influenzae type B (Hib) (39).
- An increase in meningococcal infections and tick-borne encephalitis (TBE) was observed, while Hib incidence decreased due to vaccination. Viral neuroinfections and encephalitis cases rose.
- Etiological agents for aseptic meningitis and encephalitis were identified in only 3% and 20% of cases, respectively. TBE incidence was 0.83 in 2006, with most cases in the northeast.
Impact:
- The findings highlight the dynamic nature of neuroinfection epidemiology in Poland.
- The study underscores the impact of vaccination on reducing specific bacterial neuroinfections like Hib.
- Increased incidence of TBE emphasizes the need for continued surveillance and public awareness in endemic areas.
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