title: A comparative profile of the prevalence and age distribution of human papillomavirus type 16/18 infections among three states of India with focus on northeast India.
abstract: Human papillomavirus (HPV) DNA in cervical scrape samples of married women from Manipur (n= 692) and Sikkim (n= 415) in northeast India was determined and compared with that of women from West Bengal (n= 1112) in eastern India by polymerase chain reaction. HPV prevalence was lower in Manipur (7.4%) than in Sikkim (12.5%), which was closely followed by West Bengal (12.9%). HPV18 was predominant in Manipur (2.03%) and strikingly lower (0.2%) in Sikkim and West Bengal (0.9%), while the reverse was true for HPV16. The proportion of HPV16/18 infections in Manipur (3.3%, 22/672) and Sikkim (3.89%, 14/359) were comparable and significantly lower compared to that in West Bengal (7.8%, 79/1007) among women having normal cervical cytology. Such prevalence was similar among all age groups in Manipur: increased with age for women in Sikkim and dropped with age for those in West Bengal similar to that reported previously. At age < or =30 years, HPV16/18 prevalence in Manipur (3.3%) and Sikkim (2.5%) was comparable but was significantly lower (P < 0.05) in contrast to that in West Bengal (8.8%). Among abnormal cytologic lesions, HPV16/18 infections were significantly higher than in normals (P= 0.000) both in Sikkim (14.3%) and West Bengal (20.9%) and absent in Manipur. Such prevalence was noted among women in Sikkim aged >30 years and equally among those in West Bengal aged < or =30 or >30 years. Thus, women from northeast India, particularly from Manipur, appear less susceptible to HPV16/18 infection and related cervical lesions compared to those from West Bengal, where such proneness was prominently evident at age < or =30 years.
authors.affiliation: Human Genetics Unit, Indian Statistical Institute, 203 B.T. Road, Kolkata 700-108, India.
authors.forename: P
authors.initials: P
authors.lastname: Laikangbam
authors.forename: S
authors.initials: S
authors.lastname: Sengupta
authors.forename: P
authors.initials: P
authors.lastname: Bhattacharya
authors.forename: C
authors.initials: C
authors.lastname: Duttagupta
authors.forename: Th
authors.initials: T
authors.lastname: Dhabali Singh
authors.forename: Y
authors.initials: Y
authors.lastname: Verma
authors.forename: S
authors.initials: S
authors.lastname: Roy
authors.forename: R
authors.initials: R
authors.lastname: Das
authors.forename: S
authors.initials: S
authors.lastname: Mukhopadhyay
mesh_terms: D000328:Adult; D000367:Age Factors; D002584:Cervix Uteri / Q000166:cytology / Q000473:pathology / Q000821:virology; D004279:DNA, Viral / Q000032:analysis / Q000302:isolation & purification; D005260:Female; D052162:Human papillomavirus 16 / Q000235:genetics; D052161:Human papillomavirus 18 / Q000235:genetics; D006801:Humans; D007194:India / Q000453:epidemiology; D008875:Middle Aged; D030361:Papillomavirus Infections / Q000453:epidemiology* / Q000821:virology*; D015995:Prevalence
chemical_list: D004279:DNA, Viral