缅甸人类免疫缺陷病毒-1的二重感染

目的 了解缅甸高危人群HIV-1二重感染的发生情况与特征.方法 收集缅甸HIV-1阳性血浆46份,通过不同PCR测序引物得到不同测序结果或直接测序时碱基模糊,从而确定可能为二重感染病例,然后采用TA克隆的方法对单个PCR克隆进行测序,找到血浆标本中的HIV-1准种,并分析其系统发生和重组结构.结果 46例HIV-1阳性患者中,3例为HIV-1二重感染,发生率为6.5%.此3例患者均通过异性性接触感染,均为CRF01_AE和B′以及两者的重组病毒准种构成的混合感染.结论 缅甸高危人群HIV-1的二重感染较为常见,为快速产生新的重组病毒株提供了基础.

Abstract：

Objective To investigate the occurrence and the characteristics of human immunodeficiency virus (HIV)-1 co/super-infection among high-risk populations in Myanmar.Methods Forty-six HIV-1 positive plasma in Myanmar were collected. Possible cases with HIV-1 co/super infection were identified by discordant sequence results obtained with different polymerase chain reaction (PCR)/sequencing primers or by ambiguous readings in direct sequencing. HIV-1 quasispecies in plasma were then characterized by clonal sequence analysis of independent PCR-clones generated by TA cloning method. Thereafter, their phylogeny and recombinant structure were investigated. Results Co/super infection was identified in 3 (6.5 %) cases among the 46 screened HIV-1 positive patients.All of these three patients were heterosexuals and were co/super infected with CRF01_AE/subtype B′recombinants. Conclusions HIV-1 co/super infections are relatively common and provide a prerequisite for rapid generation of new recombinant forms in Myanmar.

Study on human immunodeficiency virus-1 super-infection among high-risk populations in Myanmar

Objective To investigate the occurrence and the characteristics of human immunodeficiency virus (HIV)-1 co/super-infection among high-risk populations in Myanmar.Methods Forty-six HIV-1 positive plasma in Myanmar were collected. Possible cases with HIV-1 co/super infection were identified by discordant sequence results obtained with different polymerase chain reaction (PCR)/sequencing primers or by ambiguous readings in direct sequencing. HIV-1 quasispecies in plasma were then characterized by clonal sequence analysis of independent PCR-clones generated by TA cloning method. Thereafter, their phylogeny and recombinant structure were investigated. Results Co/super infection was identified in 3 (6.5 %) cases among the 46 screened HIV-1 positive patients.All of these three patients were heterosexuals and were co/super infected with CRF01_AE/subtype B′recombinants. Conclusions HIV-1 co/super infections are relatively common and provide a prerequisite for rapid generation of new recombinant forms in Myanmar.