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HIV-2 subtype circulating in India (south).

Rajesh Kannangai1, Ramachandran V Shaji, Sandeep Ramalingam

  • 1Department of Clinical Virology, Christian Medical College Hospital, Vellore-632 004, India.

Journal of Acquired Immune Deficiency Syndromes (1999)
|June 10, 2003
PubMed
Summary

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This study identified the Human Immunodeficiency Virus type 2 (HIV-2) subtype A prevalence in South India. All sequenced strains, including dual Human Immunodeficiency Virus type 1 (HIV-1) and HIV-2 infections, belonged to subtype A.

Area of Science:

  • Virology
  • Genetics
  • Epidemiology

Background:

  • Genetic diversity of Human Immunodeficiency Virus (HIV) subtypes necessitates regional surveillance.
  • Understanding HIV-2 subtype distribution is crucial for effective public health strategies in India.

Purpose of the Study:

  • To determine the prevalence and genetic characteristics of HIV-2 subtypes in South India.
  • To analyze HIV-2 strains from both monoinfections and coinfections with HIV-1.

Main Methods:

  • Nucleotide sequencing of the HIV-2 envelope V3 region.
  • Phylogenetic analysis of sequenced HIV-2 strains.
  • Analysis of strains from individuals across different regions of South India.

Main Results:

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  • All analyzed HIV-2 strains from South India belonged to subtype A.
  • This finding includes strains from individuals with HIV-2 monoinfection and dual HIV-1/HIV-2 infection.
  • A total of 17 HIV-2 strains, including 12 from this study, have been sequenced in India to date.

Conclusions:

  • HIV-2 subtype A is prevalent in South India.
  • Subtype A circulates in both HIV-2 monoinfections and dual HIV-1/HIV-2 infections in the region.
  • Continued molecular surveillance of HIV subtypes in India is warranted.