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Viral Mutations00:36

Viral Mutations

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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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Viral Recombination00:57

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Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
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[Scimitar syndrome].

Medicina·2025
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Updated: May 8, 2025

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1
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[Coinfection with two dengue serotypes during the 2024 outbreak].

Karen A Poccia1, Maria F Rugani2, Jacqueline M Galiano2

  • 1Servicio de Virología, Hospital Mariano y Luciano de la Vega, Moreno, Buenos Aires, Argentina.

Medicina
|April 8, 2025
PubMed
Summary
This summary is machine-generated.

The first report of dengue virus (DENV-1/DENV-2) co-infections in Moreno Municipality is presented. Co-infected patients showed no significant clinical differences compared to single-serotype dengue cases.

Keywords:
co-infectiondengueserotypes

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Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Context:

  • Dengue virus, a significant global health concern, is transmitted by Aedes aegypti mosquitoes.
  • Clinical manifestations of dengue range from mild to severe.
  • Co-infection with multiple dengue serotypes can potentially alter disease presentation and transmission dynamics.

Purpose:

  • To report the initial occurrence of dengue virus serotype 1 and 2 (DENV-1/DENV-2) co-infection in Moreno Municipality.
  • To analyze the clinical characteristics of patients with DENV-1/DENV-2 co-infection.
  • To monitor dengue epidemiology during an observed increase in cases.

Summary:

  • Six cases of DENV-1/DENV-2 co-infection were identified at Moreno Hospital between epidemiological weeks 1-15 of 2024.
  • A notable rise in dengue cases was recorded during this period compared to previous years.
  • Clinical presentations in co-infected individuals did not significantly differ from those with single dengue serotype infections.

Impact:

  • This finding highlights the emergence of dengue virus co-infections in Moreno Municipality, necessitating ongoing surveillance.
  • It underscores the importance of characterizing co-infected populations to understand potential implications for disease severity and public health strategies.
  • The data contributes to the broader understanding of dengue epidemiology and co-infection patterns in the region.