title: [Distribution and clinical significance of HBV genotypes in patients with HBV infection in 30 regions of China].
abstract: OBJECTIVE
  To explore the distribution and clinical significance of HBV genotypes in patients with HBV infection in China.
  
  
  METHODS
  Serum samples were collected from 2922 patients with HBV infection. HBV genotyping was performed with type-specific primers polymerase chain reaction, and the virological and biochemical markers were detected, which differences in the genotypes distribution between various regions and liver function and virological markers between various HBV genotyping were analyzed.
  
  
  RESULTS
  The genotype B, C, B + C, D of 2922 patients with HBV infection accounted for 15.9%, 83.5%, 0.41%, 0.21% respectively. In Northern China, genotype C was most prevalent, accounting for 90% of all cases, while it was less common in Southern China; genotype C was present in Zhejiang and Jiangsu provinces, but genotype B was comparatively more common in Guangdong, Hunan, Hubei, and Jiangxi provinces. B, C genotype HBV infection patients in the sex difference was not statistically significant; B genotypes compared with C genotype HBV infection patients, the average age of is less (P < 0.001); HBeAg positive rate of C genotype HBV infection patients are higher than that of B genotype (P = 0.023); Viral load of genotype C HBV infection patients is higher than that of genotype B (P = 0.038); Cholinesterase and Albumin levels of genotype C HBV infection patients are lower than that of genotype B (P values were 0.016, <0.001).
  
  
  CONCLUSIONS
  There were HBV genotype B, C, B + C and D in Chinese patients with HBV infection, with genotype B and C being the major ones. Mainly in northern regions of genotype C, C genotype significantly reduced the southern region, some of the southern region dominated by B genotype. Genotype C HBV infection patients are older, and their HBeAg-positive rate is higher, and their liver damage is more severe, but their viral load is less.
authors.affiliation: Postgraduate Team of PLA Postgraduate Medical School, Beijing 100853, China.
authors.forename: Ai-min
authors.initials: AM
authors.lastname: Zhang
authors.forename: Hui-fen
authors.initials: HF
authors.lastname: Wang
authors.forename: Hai-bin
authors.initials: HB
authors.lastname: Wang
authors.forename: Hai-bin
authors.initials: HB
authors.lastname: Su
authors.forename: Shao-jie
authors.initials: SJ
authors.lastname: Xin
authors.forename: Jin-hua
authors.initials: JH
authors.lastname: Hu
authors.forename: Shao-li
authors.initials: SL
authors.lastname: You
mesh_terms: D000293:Adolescent; D000328:Adult; D000914:Antibodies, Viral / Q000276:immunology; D002681:China / Q000453:epidemiology; D005260:Female; D005838:Genotype; D006509:Hepatitis B / Q000453:epidemiology / Q000276:immunology / Q000821:virology*; D006515:Hepatitis B virus / Q000145:classification / Q000235:genetics* / Q000276:immunology / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D055815:Young Adult
chemical_list: D000914:Antibodies, Viral