Related Experiment Video
Updated: Jul 17, 2026
10:03
Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
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
Przeglad Epidemiologiczny
|January 26, 2007
Summary
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.
Related Concept Videos
01:19Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
01:17Poliomyelitis
Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
01:22Bacterial Meningitis I: Introduction
Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
01:26Encephalitis ll: Pathophysiology
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
01:24Bacterial Meningitis
Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
01:18Viral Meningitis
Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...