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Evidence for a "Founder Effect" among HIV-infected injection drug users (IDUs) in Pakistan.


ABSTRACT:

Background

We have previously reported a HIV-1 subtype A infection in a community of injection drug users (IDUs) in Karachi, Pakistan. We now show that this infection among the IDUs may have originated from a single source.

Methods

Phylogenetic analysis was performed of partial gag sequences, generated using PCR, from 26 HIV-positive IDU samples.

Results

Our results showed formation of a tight monophyletic group with an intra-sequence identity of < 98% indicating a "founder effect". Our data indicate that the HIV-1 epidemic in this community of IDUs may have been transmitted by an HIV positive overseas contract worker who admitted to having contact with commercial sex workers during stay abroad.

Conclusion

Specific measures need to implemented to control transmission of HIV infection in Pakistan through infected migrant workers.

SUBMITTER: Rai MA 

PROVIDER: S-EPMC2820481 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Publications

Evidence for a "Founder Effect" among HIV-infected injection drug users (IDUs) in Pakistan.

Rai Mohammad A MA   Nerurkar Vivek R VR   Khoja Suhail S   Khan Saeed S   Yanagihara Richard R   Rehman Arish A   Kazmi Shahana U SU   Ali Syed H SH  

BMC infectious diseases 20100112


<h4>Background</h4>We have previously reported a HIV-1 subtype A infection in a community of injection drug users (IDUs) in Karachi, Pakistan. We now show that this infection among the IDUs may have originated from a single source.<h4>Methods</h4>Phylogenetic analysis was performed of partial gag sequences, generated using PCR, from 26 HIV-positive IDU samples.<h4>Results</h4>Our results showed formation of a tight monophyletic group with an intra-sequence identity of < 98% indicating a "founder  ...[more]

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