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Published on: November 5, 2019
[Meningitis and encephalitis in Poland in 2004]
Paweł Stefanoff1, Magdalena Rosińska
1Zakład Epidemiologii Pańistwowego Zakładu Higieny, Warszawa. pstefanoff@pzh.gov.pl
Abstract:
In Poland, 2 725 cases of neuroinfections were reported in 2004, of which 945 had bacterial etiology, 1427 viral, and 353 cases had other or unknown origin. Incidence of bacterial neuroinfections increased in 2004, despite a decreasing trend observed during the past decade. Etiological factor was determined in 433 (46%) cases of bacterial neuroinfections. Among them Neisseria meningitidis was found in 119 cases, Haemophilus influenzae in 77 cases and Streptococcus pneumoniae in 107 cases. As in the previous years, serotype B was the predominant type of N. meningitidis cultured from patients, but type C appears to be systematically increasing, accounting for 27% of the strains serotyped in 2004. Viral neuroinfections were less common in 2004, compared to previous years. Etiological factor of central nervous system aseptic infections were established only in 17% of cases. Among confirmed cases, there were 262 cases of tick-borne encephalitis and 15 cases of herpetic encephalitis. Tick borne encephalitis incidence decreased in 2004 (0.7), compared to 2003 (339 cases, incidence 0.9). Most of the cases were reported from endemic areas of north-eastern part of the country.
Insights
In 2004, Poland saw a rise in bacterial neuroinfections, notably from Neisseria meningitidis and Streptococcus pneumoniae. Viral neuroinfections, including tick-borne encephalitis, decreased, with most cases concentrated in the northeast.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Background:
- Neuroinfections pose a significant public health challenge globally.
- Understanding etiological factors and trends is crucial for effective prevention and control strategies.
- Poland has specific regional patterns in neuroinfection incidence.
Purpose of the Study:
- To analyze the incidence and etiological factors of neuroinfections in Poland in 2004.
- To identify trends in bacterial and viral neuroinfections.
- To report on specific pathogens like Neisseria meningitidis, Haemophilus influenzae, Streptococcus pneumoniae, and tick-borne encephalitis virus.
Main Methods:
- Retrospective analysis of reported neuroinfection cases in Poland for 2004.
- Categorization of cases by etiology (bacterial, viral, other/unknown).
- Identification of specific causative agents through laboratory testing.
Main Results:
- A total of 2,725 neuroinfection cases were reported in 2004.
- Bacterial neuroinfections increased, with Neisseria meningitidis (119 cases), Streptococcus pneumoniae (107 cases), and Haemophilus influenzae (77 cases) as key pathogens. N. meningitidis serotype C showed a systematic increase.
- Viral neuroinfections decreased; tick-borne encephalitis was confirmed in 262 cases, with incidence declining from 2003. Most cases were in northeastern Poland.
Conclusions:
- Bacterial neuroinfections are a growing concern in Poland, necessitating enhanced surveillance and vaccination strategies, particularly for N. meningitidis.
- While viral neuroinfections like tick-borne encephalitis decreased, they remain endemic in specific regions.
- Further research into unknown etiological factors is warranted to improve understanding and management of neuroinfections.
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