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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
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In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
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The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
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In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
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Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
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Cuando una enfermedad emergente se vuelve endémica

Graham F Medley1, Anna Vassall2

  • 1Department of Global Health and Development, London School of Hygiene and Tropical Medicine, WC1E 7HT London, UK. graham.medley@lshtm.ac.uk.

Science (New York, N.Y.)
|July 15, 2017
PubMed
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Las epidemias reciben una atención y financiación significativas, lo que lleva a esfuerzos exitosos de erradicación. Sin embargo, las enfermedades endémicas imponen una mayor carga para la salud pública, pero reciben menos atención.

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Área de la Ciencia:

  • Salud pública
  • Epidemiología
  • Enfermedades infecciosas

Sus antecedentes:

  • Las epidemias como el VIH (a principios de los años ochenta) y el Ébola (2014) provocan una inversión gubernamental sustancial, preocupación pública y acción rápida.
  • Las enfermedades endémicas, como el VIH (2017) y la tuberculosis, a menudo no logran mantener niveles similares de atención y recursos.
  • Existe una paradoja significativa cuando las enfermedades endémicas representan colectivamente una mayor carga para la salud pública que las epidémicas.

Objetivo del estudio:

  • Destacar la disparidad en la atención pública y gubernamental entre las enfermedades epidémicas y endémicas.
  • Subrayar el impacto sustancial y permanente de las enfermedades infecciosas endémicas en la salud pública.
  • Analizar los factores que contribuyen a la gestión exitosa de las epidemias frente a la negligencia de las enfermedades endémicas.

Principales métodos:

  • Análisis comparativo de las respuestas históricas a las epidemias y de las cargas endémicas actuales.
  • Revisión de la inversión en salud pública y la atención de los medios de comunicación para determinadas enfermedades epidémicas y endémicas.
  • Examen del impacto a largo plazo de las enfermedades infecciosas en la salud mundial.

Principales resultados:

  • Las enfermedades epidémicas han provocado históricamente una acción decisiva, que a menudo condujo a la erradicación exitosa, incluso sin intervenciones biomédicas avanzadas.
  • Las enfermedades endémicas, a pesar de su carga acumulada más alta, luchan por mantener un enfoque público y político consistente.
  • El VIH representa un caso único, que pasa de ser epidémico a endémico, mientras que muchas enfermedades endémicas de larga data continúan dominando el panorama de las enfermedades infecciosas.

Conclusiones:

  • El enfoque actual de las enfermedades infecciosas favorece desproporcionadamente las amenazas epidémicas sobre la carga persistente de las enfermedades endémicas.
  • Las estrategias eficaces para la gestión de las epidemias ofrecen valiosas lecciones para abordar el desafío sostenido de las enfermedades endémicas.
  • Es necesaria una reevaluación de la asignación de recursos y el enfoque en la salud pública para abordar adecuadamente la totalidad de las amenazas de enfermedades infecciosas.