Some risk factors associated with acid-alcohol-fast bacilli in patients with suspected pulmonary tuberculosis in Jos, Central Nigeria

Background: Mycobacterium tuberculosis remains a very serious public health problem due to its high tendency of person to person transmission; morbidity; and mortality. This study aimed at determining some risk factors associated with the prevalence of acid-alcohol-fast-bacilli (AAFB) within the study area. Materials and Methods: Sputum samples were collected from three hundred and three (303) patients with suspected cases of pulmonary tuberculosis in Jos. The samples were examined using Ziehl Neelson method. Structured questionnaires were administered to obtain some demographic data from patients that consented. Results were tested statistically for significance at p 0.05 using Chi-square test. Results: Out of the samples examined; 29 (9.60); were positive for AAFB. The study showed that the prevalence of smear-positive increased with increase in number of persons sharing the same room. Statistically the study reveals that some risk factors such as alcoholism; cigarette smoking and number of persons staying in a household had a significant effects on the prevalence (p 0.05);while HIV status had no significant effect on the prevalence (p 0.05). Conclusion: There was high prevalence of AAFB in the study area especially among people living in poor/congested housing facilities and people with HIV/AIDS. This calls for more collaborative efforts and political will by government and non-governmental agencies in order to eradicate the infection rate within the area; and the country at large

Molecular epidemiology of hepatitis C virus (HCV) in Kadun State

Objective: To determine the distribution of hepatitis C virus (HCV) genotypes and subtypes among blood donors and outpatients attendees positive for antibody to HCV (anti-HCV). Justification: Hepatitis C virus (HCV) continues to be a major disease burden on the world and Man is the only known natural host of Hepatitis C virus (Chivaliez and Pawlotsky; 2007). There is no published data on the prevalence of the genotypes and subtypes of HCV in Kaduna State. Setting: Three hospitals one in each of the 3 senatorial zones in Kaduna State. Patients: Blood donors who reported for blood donation and outpatient department attendees. Method: Antibody detection by a third generation HCV ELISA (Biotech Laboratories; UK); HCV RNA and genotyping by Reverse Transcriptase polymerase chain reaction with genotype-specific primers. (Sacace Biotechnologies; UK). Results: of the 259 plasma specimens screened for Hepatitis C virus in this study; 20(7.7) were positive for anti-HCV antibodies by ELISA and 16(6.2) of the antibodies positive specimen were positive for HCV RNA. Of the 139 blood donors tested; 8 (5.8) were HCV RNA positive. Similarly; 120 were tested from the outpatient Department attendees and 8 (6.7) were HCV RNA positive. Hepatitis C virus genotype 1b was found in the entire HCV RNA positive sample. Conclusions: The findings of 6.2prevalence of HCV infection based on HCV RNA test confirmed that there is Hepatitis C virus in Kaduna State with genotype 1b as the predominant genotype found in all the three senatorial zones