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Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1
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Different lineages of Chikungunya virus in Equatorial Guinea in 2002 and 2006

Ximena Collao1, Ana I Negredo, Jorge Cano

  • 1National Center of Microbiology, Instituto de Salud Carlos III, Madrid, Spain. xime.collao@isciii.es

The American Journal of Tropical Medicine and Hygiene
|March 9, 2010
PubMed

Insights

Chikungunya virus, a re-emergent mosquito-borne pathogen, was detected in Equatorial Guinea between 2002-2003 and 2006. Two distinct viral lineages are circulating, highlighting the need for differential diagnosis in febrile illnesses.

Area of Science:

  • * Virology and infectious diseases.
  • * Epidemiology of arboviral infections.
  • * Public health surveillance in tropical regions.

Background:

  • * Chikungunya virus (CHIKV) is a significant mosquito-borne arbovirus causing acute febrile illness and severe joint pain.
  • * CHIKV is recognized as a re-emergent pathogen with increasing global distribution.
  • * Understanding its presence and circulation is crucial for public health management.

Purpose of the Study:

  • * To investigate the presence and genetic diversity of chikungunya virus in Bata, Equatorial Guinea.
  • * To determine if chikungunya virus was circulating during the study period (2002-2003).
  • * To assess the relevance of chikungunya virus in febrile syndromes in the region.

Main Methods:

  • * Amplification of chikungunya virus genome from blood samples collected during rainy seasons (2002-2003).
  • * Isolation of the virus from a traveler returning from Equatorial Guinea in 2006.
  • * Genomic analysis to identify circulating lineages.

Main Results:

  • * Chikungunya virus genome was successfully amplified from infant blood samples in Bata, Equatorial Guinea.
  • * The virus was also isolated from a traveler returning from Equatorial Guinea in 2006.
  • * Evidence indicates the circulation of at least two distinct chikungunya virus lineages in the region.

Conclusions:

  • * Chikungunya virus is actively circulating in Equatorial Guinea.
  • * The presence of multiple lineages suggests ongoing viral transmission and potential for spread.
  • * Chikungunya virus should be included in the differential diagnosis of febrile illnesses for both local populations and returning travelers.

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