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Related Concept Videos

Arboviral Encephalitis01:25

Arboviral Encephalitis

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Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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Viral Meningitis01:18

Viral Meningitis

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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...
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Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

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Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable...
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Bacterial Gastroenteritis01:18

Bacterial Gastroenteritis

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Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...
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Encephalitis, Ontario, Canada, 2002-2013.

Alyssa S Parpia, Ye Li, Cynthia Chen

    Emerging Infectious Diseases
    |February 19, 2016
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    Summary
    This summary is machine-generated.

    Encephalitis incidence in Ontario is approximately 4.3 cases per 100,000 people annually. Infants and older adults face higher risks, with seasonal peaks observed, primarily due to viral causes.

    Keywords:
    CanadaEnglandOntariobacteriaencephalitisepidemiologyetiologyfungiincidenceparasitesviruses

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    Area of Science:

    • Neurology
    • Epidemiology
    • Public Health

    Background:

    • Encephalitis, a severe brain inflammation caused by over 100 pathogens, poses significant health risks.
    • Understanding the incidence and trends of encephalitis is crucial for public health planning and resource allocation.

    Purpose of the Study:

    • To determine the incidence and temporal trends of encephalitis in Ontario, Canada.
    • To identify demographic groups at higher risk for encephalitis.
    • To compare Ontario's encephalitis epidemiology with other regions, such as England.

    Main Methods:

    • Utilized hospitalization data for 6,463 encephalitis cases in Ontario from April 2002 to December 2013.
    • Employed multiple negative binomial regression analysis to assess incidence and trends.
    • Compared incidence rates across different age groups and genders.

    Main Results:

    • The crude incidence of all-cause encephalitis in Ontario was estimated at approximately 4.3 cases per 100,000 persons per year.
    • Infants under 1 year and adults over 65 years had significantly higher incidence rates compared to adults aged 20-44.
    • Incidence peaked in August-September, mainly driven by encephalitis of unknown cause and viral encephalitis.

    Conclusions:

    • Encephalitis affects all age groups, with notable vulnerability in the very young and the elderly.
    • Ontario's encephalitis epidemiology shows similarities to England despite geographical and climatic differences.
    • Further research into unknown and viral encephalitis causes is warranted.