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- W1986243552 abstract "Reports of HIV-1 superinfection (re-infection) have demonstrated that the immune response generated against one strain of HIV-1 does not always protect against other strains. However, studies to determine the incidence of HIV-1 superinfection have yielded conflicting results. Furthermore, few studies have attempted to identify superinfection cases occurring more than a year after initial infection, a time when HIV-1-specific immune responses would be most likely to have developed. We screened a cohort of high-risk Kenyan women for HIV-1 superinfection by comparing partial gag and envelope sequences over a 5-y period beginning at primary infection. Among 36 individuals, we detected seven cases of superinfection, including cases in which both viruses belonged to the same HIV-1 subtype, subtype A. In five of these cases, the superinfecting strain was detected in only one of the two genome regions examined, suggesting that recombination frequently occurs following HIV-1 superinfection. In addition, we found that superinfection occurred throughout the course of the first infection: during acute infection in two cases, between 1–2 y after infection in three cases, and as late as 5 y after infection in two cases. Our results indicate that superinfection commonly occurs after the immune response against the initial infection has had time to develop and mature. Implications from HIV-1 superinfection cases, in which natural re-exposure leads to re-infection, will need to be considered in developing strategies for eliciting protective immunity to HIV-1." @default.
- W1986243552 created "2016-06-24" @default.
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- W1986243552 date "2007-11-16" @default.
- W1986243552 modified "2023-10-11" @default.
- W1986243552 title "Chronic HIV-1 Infection Frequently Fails to Protect against Superinfection" @default.
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- W1986243552 doi "https://doi.org/10.1371/journal.ppat.0030177" @default.
- W1986243552 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2077901" @default.
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