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Related Concept Videos

Primary Healthcare Services01:30

Primary Healthcare Services

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Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
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Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
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Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
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Principles of Disease Surveillance

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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
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At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
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Public Health.

Rory Boyle1, Brian Nelson2, Sheina Emrani2

  • 1Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.

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|December 23, 2025
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Summary
This summary is machine-generated.

Exposure to nitrogen dioxide (NO2) is linked to increased functional impairment and accelerated cognitive decline in individuals with behavioral-variant frontotemporal degeneration (bvFTD). Further research is needed to understand the underlying mechanisms.

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Area of Science:

  • Neurodegenerative diseases
  • Environmental health
  • Cognitive science

Background:

  • Elevated ambient air pollutants, including nitrogen dioxide (NO2), are linked to dementia risk and reduced cognitive performance in older adults.
  • The association between NO2 exposure and cognitive/functional impairment in behavioral-variant frontotemporal degeneration (bvFTD) remains unclear.

Purpose of the Study:

  • To investigate the relationship between NO2 exposure and cognitive and functional impairment in individuals diagnosed with bvFTD.
  • To examine if NO2 exposure influences the progression of cognitive decline in bvFTD patients.

Main Methods:

  • Utilized data from 168 individuals with bvFTD for NO2 exposure and cognitive performance, and 101 individuals for NO2 exposure and functional impairment.
  • NO2 exposure was estimated using census-tract level data matched to home addresses.
  • Cognitive performance was assessed using the Mini-Mental State Examination (MMSE) over a 2-year period, and functional impairment was measured using the Functional Activities Questionnaire (FAQ) at baseline.

Main Results:

  • NO2 exposure was significantly associated with greater baseline functional impairment (p=0.031).
  • No significant association was found between NO2 exposure and baseline cognitive performance (p=0.212).
  • NO2 exposure was linked to a faster rate of global cognitive decline over time (p=0.008).

Conclusions:

  • Elevated NO2 exposure is associated with worse functional impairment at baseline and accelerated cognitive decline in bvFTD.
  • Further imaging and pathological studies are warranted to elucidate the mechanisms behind these observed associations.