Table 1 Description of selected studies

Atipo-Ibarra et al. [22]

Area: Pointe-Noire, Niari, Bouenza

Design: Cross-sectional

To characterize the molecular profile of HIV in highly endemic areas of Congo

Donors of blood

1363

HBsAg (9.9%)

Angounda et al. [19]

Area: Pointe-Noire

Design: Prospective

To detect the patients at high risk of hepatitis disease progression

Chronic HBV patients

111

HBeAg (15.3%)

Anti-HBe (73%)

Angounda et al. [19]

Area: Pointe-Noire

Design: Prospective

To determine the prevalence markers and factors associated with HBV infection in blood donors

Donors of blood

648

HBsAg 6.6%

HBeAg 1.1%

Anti-HBe 8.2%

Anti-HBs 13.6%

Anti-HBc 62.7%

Alidjinou et al. [48]

Area: Pointe-Noire

Design: Prospective

To investigate HCV and HIV co-infection among asymptomatic and treatment-naïve blood donors in Pointe-Noire, Republic of Congo

Donors of blood

7785

366 (4.7%)

Atipo-Ibara. et al. [21]

Area: Pointe-Noire and Brazzaville

Design: Coss-sectional

To identify the genotypes of the hepatitis C virus in Congo

Donors of blood

17,351

Bossali et al. [81]

Area: Pointe-Noire

Design: Cross-sectional, descriptive and analytical

To estimate the prevalence of co-infection of hepatitis B and C viruses with HIV among parous women in Pointe-Noire

New mothers

302

9.6% VHB

6% VHC

Taty-Taty et al. [80]

Area: Brazzaville

Design: Cross-sectional, descriptive

To determine the prevalence of chronic carriage of HBsAg and anti-HBc in Brazzaville

General population

Undefined

AgHBs (7.3%)

Anti-HBc (67.21%)

Bossali et al. [82]

Area: Brazzaville Design: Multicenter study-retrospective and descriptive

To define the place of infection by hepatitis B in the etiology of cirrhosis and hepatocellular carcinoma diagnosed in Pointe-Noire

Patients received for cirrhosis and hepatocellular carcinoma, who had undergone the search for HBsAg

3276

63% AgHBs

Makuwa et al. [83]

Area: Brazzaville

Design: Longitudinal

To know the significant links between the presence of markers of hepatitis B and that of HIV infection

People attended by the Department of Infectious Diseases of the Hospital Center of Makélékélé

334

Ag HBs (8.5)

Ag HBe (4.2)

Anti-HBe (4.2)

Anti HBc (93.6)

Dokekias et al. [49]

Area: Brazzaville

Design: Prospective

To evaluate the seroprevalence of anti-HCV antibodies in poly transfused subjects

Multitransfused patients: and control cases

132 multitransfused patients and 120 control cases

AcHCV: 26 out of 132 (19.7%) and control cases 9 out of 120 (7.5%)

Cantaloube et al. [23]

Area: Brazzaville

Design: Cross-sectional

To carry out among the Bantu and Pygmy populations was (i) to determine the seroprevalence and viremia of HCV

887 donors identified

50

5.6% as seropositive for HCV [subgroups: Ngala (~ 12%); Teke (3.6%); Kongo (5.6%); Pygmies (3.8%)]