Microbial Contamination of Locally Produced Cheese and Determination of their Antimicrobial Potential in Nigeria

The high consumptionrate of soft cheese and manner of cheese production in Nigeria prompted the need to determine the microbial quality and  antimicrobial properties of locally produced cheese in Nigeria. A total of 20 cheese samples were obtained from different points in 4 cities in southern Nigeria, 5 cheeses per city. They were investigated for some physico-chemical properties, isolation and microbial counts and determination of antimicrobial potential. There was no significant variation in the  composition of physic-chemical properties of cheese samples from various cities except for the acidity of cheese sample obtained from Ilorin. All the 20 samples (100%) yielded low level of lactic acid bacteria (LAB) with counts ~ 103. Escherichia coli or Klebsiella species were constantly isolated in all the cheese samples. Similarly, yeast and Aspergillus species were isolated either alone or in a mixed culture. The result showed increase in total bacteria count from the point of production to the hawkers.  Antimicrobial potential was not found in cheese against the  microorganisms used in the study. The study identified local cheese (‘wara’) as a high risk food in Nigeria due to the high rate of contamination since they are ready-to-eat food item and no antimicrobial property detected in the soft cheese.Key Words: Cheese; Bacteria; Fungi; Nigeria, Susceptibility Le taux de fromage à pâte molle et les modalités de production de  fromage au Nigeria à forte consommation a incité la nécessité de déterminer la qualité microbienne et propriétés antimicrobiennes de  fromage produit localement au Nigeria. Un total de 20 échantillons de fromage ont été obtenues à partir de différents points dans 4 villes au sud du Nigeria, 5 fromages par ville. Ils ont été étudiés pour certaines  propriétés physico-chimiques, l'isolement et les numérations microbiennes et détermination du potentiel antimicrobien. Il n'y avait aucune variation significative dans la composition des propriétés physico- chimiques des échantillons de fromage à partir de différentes villes à l'exception de l'acidité de l'échantillon obtenu à partir de fromage de la ville d’Ilorin. Tous les 20 échantillons (100%) ont donné un faible niveau de bactéries lactiques (LAB) avec environs 103 espèces. Escherichia coli ou Klebsiellaont été constamment isolés dans tous les échantillons de fromage. De même, des espèces de levures et d'Aspergillus ont été isolés soit seuls, soit dans une culture mixte. Le résultat a montré l’augmentation des bactéries totales compté du point de production aux colporteurs. Potentiel antimicrobien n'a pas été trouvé dans le fromage contre les micro-organismes utilisés dans l'étude. L'étude a identifié fromage local (' wara ‘) comme un aliment à haut risque au Nigeria en raison du taux élevé de contamination, car ils sont prêts à consommer l'aliment et aucune  propriété antimicrobienne détecté dans le fromage à pâte molle.Mots clés: Fromage; bactéries; champignons; Nigeria, sensibilit

Seroprevalence of HTLV -I/II amongst Blood Donors in Osogbo, Nigeria.

Background: HTLV type I/II is a blood borne infection that can be transmitted via blood transfusion.Objective: To determine the seroprevalence of human T – lymphotropic virus among blood donors in Osogbo, Nigeria.Methods: Diagnosis of Human T. Lymphotropic virus antigen was carried out on 372 serum samples among blood donors who visited the blood bank/transfusion unit of Ladoke Akintola University of Technology  Teaching Hospital and Our Lady of Fatima Catholic Hospital, Osogbo between January and July 2008 using Enzyme linked immunosorbent  assay techniques (ELISA) as described by the manufacturer. Western  blotting was used to confirm the serum reactive samples from ELISA.Results: Out of 372 samples analyzed, 14 (3.6%) samples were found to be positive for HTLV-I/II (7 HTLV-I and 7 HTLV-II) while 358 (96.4%) samples were negative after confirmation with Western blotting. The seroprevalence of HTLV-I/II among the blood donors in Osogbo, Nigeriawas found to be 3.6%. This has major implication for the blood transfusion service in Nigeria.Conclusion: The study concluded that there is need for screening of blood donor for HTLV-I/II in order to rule out this transfusion related infection.Keywords: human T-lymphotropic virus, T-cell leukaemia,  myelopathy/tropical spasticparaparesis

Prevalence of hepatitis- B virus infection among HIV patients in Ikole Ekiti, South – Western, Nigeria

Infections from HIV, Hepatitis B virus constitute a major public health challenge in sub-Saharan Africa, and there are evidences to suggest that there is faster progression of HIV in those co-infected with either HBV. The aim of this study was to determine the prevalence of HBV infections among HIV-infected patients, and describe the sociodemographic features and correlates of HIV and HBV co-infected patients at Specialists Hospital, Ekiti, Nigeria. One hundred and fifty eight (158) HIV individuals who consented to the study were tested for HBV using Diaspot HBsAg kit (Screening test) and Biorex Diagnostic ELISA kit (Confirmatory test) between November 2012 and April, 2013. CD4 counts were also analysed with Aldrich Sigma kit and flow cytometery respectively. P value < 0.05 was considered to be significant. Prevalence rates of Hepatitis B infections among HIV obtained were 5.7%. Individuals who were 51 years or younger were the most affected HBV co-infection was more common among females than males (3.8%: 1.8%, res, P = 0.0004). Out of 9 patients, 8 patients (88.9%) fell within the age range 30- 49 years which implies the high prevalence of HIV among labour force while 1 patient (11.1%) fell within the range of 50-60 years .Mean serum ALT and AST among participants with HIV alone were (42.0, 38.3) International Units (IU), but were significantly higher (57.6, 43.7) International Units (IU) for those with HIV/HBV co-infection, P = (0.048, 0.032).Mean CD 4 count for HIV/HBV co-infected participants (389 cell/mm 3 ) was significantly higher than that for participants with HIV alone (230 cell/mm 3 ), P = 0.024 Conclusion: Co-infection with hepatitis B virus is common among HIV-infected patients in our setting and this further reaffirms the need for routine baseline screening for this marker, as it is a major consideration in the initiation and choice of highly active antiretroviral therapy. Furthermore, those found to be negative should be immunized with HBV vaccine to improve the prognosis of their HIV status

Adaptation of the Wound Healing Questionnaire universal-reporter outcome measure for use in global surgery trials (TALON-1 study): mixed-methods study and Rasch analysis

BackgroundThe Bluebelle Wound Healing Questionnaire (WHQ) is a universal-reporter outcome measure developed in the UK for remote detection of surgical-site infection after abdominal surgery. This study aimed to explore cross-cultural equivalence, acceptability, and content validity of the WHQ for use across low- and middle-income countries, and to make recommendations for its adaptation.MethodsThis was a mixed-methods study within a trial (SWAT) embedded in an international randomized trial, conducted according to best practice guidelines, and co-produced with community and patient partners (TALON-1). Structured interviews and focus groups were used to gather data regarding cross-cultural, cross-contextual equivalence of the individual items and scale, and conduct a translatability assessment. Translation was completed into five languages in accordance with Mapi recommendations. Next, data from a prospective cohort (SWAT) were interpreted using Rasch analysis to explore scaling and measurement properties of the WHQ. Finally, qualitative and quantitative data were triangulated using a modified, exploratory, instrumental design model.ResultsIn the qualitative phase, 10 structured interviews and six focus groups took place with a total of 47 investigators across six countries. Themes related to comprehension, response mapping, retrieval, and judgement were identified with rich cross-cultural insights. In the quantitative phase, an exploratory Rasch model was fitted to data from 537 patients (369 excluding extremes). Owing to the number of extreme (floor) values, the overall level of power was low. The single WHQ scale satisfied tests of unidimensionality, indicating validity of the ordinal total WHQ score. There was significant overall model misfit of five items (5, 9, 14, 15, 16) and local dependency in 11 item pairs. The person separation index was estimated as 0.48 suggesting weak discrimination between classes, whereas Cronbach's α was high at 0.86. Triangulation of qualitative data with the Rasch analysis supported recommendations for cross-cultural adaptation of the WHQ items 1 (redness), 3 (clear fluid), 7 (deep wound opening), 10 (pain), 11 (fever), 15 (antibiotics), 16 (debridement), 18 (drainage), and 19 (reoperation). Changes to three item response categories (1, not at all; 2, a little; 3, a lot) were adopted for symptom items 1 to 10, and two categories (0, no; 1, yes) for item 11 (fever).ConclusionThis study made recommendations for cross-cultural adaptation of the WHQ for use in global surgical research and practice, using co-produced mixed-methods data from three continents. Translations are now available for implementation into remote wound assessment pathways