Long Term Exposure to Tenofovir Disoproxil Fumarate-Containing Antiretroviral Therapy Is Associated with Renal Impairment in an African Cohort of HIV-Infected Adults

OBJECTIVES AND METHOD

There are growing concerns of tenofovir disoproxil fumarate (TDF)-associated renal toxicity. We evaluated the effect of long-term TDF exposure on renal function in a cohort of HIV-1-infected Nigerians between 2006 and 2015. Multivariate logistic regression was used to identify predictors of renal impairment at different time over 144 weeks of antiretroviral therapy (ART).

RESULTS

Data of 4897 patients, median age 42 years (interquartile range: 36-49), and 61% females were analyzed. The prevalence of renal impairment increased from 10% at week 24 to 45% at 144 weeks in TDF-exposed participants compared to an increase from 8% at 24 weeks to 14% at 144 weeks in TDF-unexposed participants. Tenofovir disoproxil fumarate exposure predicted the risk of renal impairment at 144 weeks of ART (odds ratio: 2.36; 95% confidence interval: 1.28-4.34).

CONCLUSION

Long-term exposure to TDF-based ART significantly increases the likelihood of renal impairment. The continued use of TDF-based regimen in our setting should be reviewed. We recommend the urgent introduction of tenofovir alafenamide-based regimen in the HIV treatment guidelines of Nigeria and other resource-limited countries.

Assessment of hand hygiene facilities and staff compliance in a large tertiary health care facility in northern Nigeria: a cross sectional study

Background

The burden of healthcare-associated infection (HAI) is 2 to 18 times higher in developing countries. However, few data are available regarding infection prevention and control (IPC) process indicators in these countries. We evaluated hand hygiene (HH) facilities and compliance amongst healthcare workers (HCW) in a 600-bed healthcare facility in Northcentral Nigeria providing tertiary care service for a catchment population of about 20 million.

Methods

An in-house facility assessment tool and the World Health Organization (WHO) direct observation method were used to assess the HH facilities and compliance, respectively. Factors associated with good compliance were determined by multivariate analysis.

Results

The facility survey was carried out in all 46 clinical units of the hospital. 72% of the units had no poster or written policy on HH; 87% did not have alcohol-based hand rubs; 98% had at least one handwash sink; 28% had flowing tap water all day while 72% utilized cup and bucket; and 58% had no hand drying facilities. A total of 406 HH opportunities were observed among 175 HCWs. The overall compliance was 31%, ranging from 18% among ward attendants to 82% among medical students. Based on WHO “5 moments” for HH, average compliance was 21% before patient contact, 23% before aseptic procedure, 63% after body fluid exposure risk, 41% after patient contact and 40% after contact with patients’ surrounding. Being a medical student was independently associated with high HH compliance, adjusted odds ratio: 13.87 (1.70–112.88).

Conclusions

Availability of HH facilities and HCW compliance in a large tertiary hospital in Nigeria is poor. Our findings confirm that HCWs seem more sensitized to their risk of exposure to potential pathogens than to the prevention of HAI cross-transmission. Inadequate HH facilities probably contributed to the poor compliance. Specific measures such as improved facilities, training and monitoring are needed to improve HH compliance.

Hand hygiene knowledge, training and practice: A cross-sectional study in a tertiary health institution, North-central Nigeria

Background

Hand hygiene (HH) is the single most important means of preventing hospital-acquired infections. We set out to determine the knowledge, training gaps, and practice of HH in a tertiary health institution in a resource constrained setting.

Methods

This cross-sectional study was conducted among health care workers in a 600-bed capacity tertiary health centre. The study was conducted between April and November 2013. A multi-stage randomized sampling method was used to self-administer 322 WHO HH knowledge questionnaires. Information on HH training in the past 3 years, knowledge and practice of HH were obtained, and data were analysed using Epi-Info version 3.5.1.

Results

A response rate of 98.5% was obtained for the HH knowledge assessment. Mean age of the study population was 39 ± 9.8. About 64% were females. Of all the respondents, only 16% had good knowledge of HH, 52% had moderate knowledge while 32% had poor knowledge. About 24% had formal training on HH. In terms of practice, only about 22% of the respondents self-reported routine practice of HH.

Conclusions

The findings in this study suggest that there is sub-optimal HH knowledge, practice and training. It is imperative to improve the HH training and retraining of health care workers with a focus on attendants. Administrative controls and bold signage in healthcare institutions are also recommended.

Lassa Fever 2016 Outbreak in Plateau State, Nigeria-The Changing Epidemiology and Clinical Presentation

Lassa fever (LF) outbreaks in Nigeria mostly occur in rural areas and during the dry season, peaking between December through February. Fever is a cardinal presenting feature among the myriad manifestations of LF. Thirty four patients with clinical diagnosis of LF were analyzed. However, only 11 (32%) LASV infections were confirmed by RT-PCR. The 2016 LF outbreak showed a preferential urban occurrence and a high case fatality. Fever (≥38°C) was not detected in over a fourth of the patients at the time of examination. Bleeding diathesis was the most common presentation while abdominal pain and headache were present in more than half of the confirmed cases. Changes in the geographical distribution and clinical presentation may have implications for disease control efforts and the risk of transmission, both locally and internationally. In order to guide interventions, public health authorities should be aware that the epidemic patterns may be changing.

Low Zika virus seroprevalence among pregnant women in North Central Nigeria, 2016

BACKGROUND

Zika virus (ZIKV) has been known for decades in Africa but contemporary data is lacking at large.

OBJECTIVES

To describe the seroepidemiology of ZIKV in North Central Nigeria.

STUDY DESIGN

We performed a cross-sectional study at six health care facilities in North Central Nigeria from January to December 2016. Detection of ZIKV antibodies was done using an anti-ZIKV recombinant non-structural protein 1 (NS1)-based ELISA. A colorimetric assay to detect ZIKV neutralizing antibodies was used on ELISA reactive and randomly selected ELISA non-reactive samples. ZIKV real-time RT-PCR was done on a subset of samples.

RESULTS

A total of 468 individual samples were included with almost 60% from pregnant women. Using NS1-based ELISA, an anti-ZIKV positive rate of 6% for IgM and 4% for IgG was found. Pregnant women showed anti-ZIKV positive rates of 4% for IgM and 3% for IgG. None of the ZIKV antibody positive samples tested ZIKV RT-PCR positive. An association with male sex was found for anti-ZIKV IgG ELISA positivity (prevalence ratio 3.49; 95% confidence interval: 1.48-8.25; p = .004). No association with pregnancy, yellow fever vaccination or malaria was found for anti-ZIKV IgM or IgG positivity. ZIKV neutralizing antibodies were detected in 17/18 (94%) anti-ZIKV NS1 positive/borderline samples and in one sample without detectable ZIKV NS1 antibodies. Partial ZIKV E gene sequence was retrieved in one sample without ZIKV antibodies, which clustered within the West African ZIKV lineage.

CONCLUSIONS

Our results show a largely ZIKV immunologically naïve population and reinforce the importance of ZIKV surveillance in Africa.

SPUTUM SMEAR PATTERN AMONG PATIENTS DIAGNOSED WITH PULMONARY TUBERCULOSIS IN MAKURDI, NORTH CENTRAL NIGERIA

BACKGROUND

Tuberculosis (TB) is endemic in Nigeria due mainly to the high burden of HIV/AIDS and especially in Benue state which has the highest prevalence of HIV in Nigeria. Sputum smear examination is of importance in the diagnosis of pulmonary TB and can be smear-positive or negative. In this study, we analyzed the sputum smear results of all patients diagnosed to have PTB during the time under review.

METHODS

The study was a retrospective study done with records of patients diagnosed with PTB between July 2009 and July 2011. The sample size was 305.

AIM

To determine the smear patterns in pulmonary tuberculosis and its relationship with HIV status.

RESULTS

There was slight male preponderance among the study group. 37% were found to be smear positive, out of which 63.7% and 36.3% were males and females respectively. The highest frequency was between 21-40 years and in this age group there were more males than females.72.1% wereTB/HIV co-infected and 29.1% of the TB/HIV co-infected patients had smear-positiveTuberculosis.

CONCLUSION

There is a high burden of TB/HIV co-infection affecting predominantly the youths. Sputum smear results in TB/HIV co-infection are largely negative. There is the need for provision of other diagnostic tests to improve the diagnosis of TB in our environment and targeted intervention among the youth to reduce the burden of TB/HIV.

Prevalence and predictors of obstructive sleep apnea syndrome in a sample of patients with type 2 Diabetes Mellitus in Nigeria

Introduction:

Obstructive sleep apnea (OSA) and Diabetes Mellitus (DM) are growing health challenges worldwide. However, the relation of OSA with type 2 diabetes is not well understood in developing countries. This study described the prevalence and predictors of OSA in type 2 DM patients using a screening questionnaire.

Materials and Methods:

Patients aged 40years and above with type 2 diabetes mellitus were recruited into the study consecutively from the outpatient clinics of a university hospital. They were all administered the Berlin questionnaire and the Epworth sleepiness scale (ESS) to assess the risk of OSA and the tendency to doze off, respectively. Anthropometric details like height, weight and body mass index (BMI) were measured and short-term glycaemic control was determined using fasting blood glucose.

Results:

A total of 117 patients with type 2 diabetes mellitus were recruited into the study. The mean (SD) age, height and BMI was 63 years (11), 160 cm (9) and 27.5 kg/ m² (5.7), respectively. Twenty-seven percent of the respondents had a high risk for OSA and 22% had excessive daytime sleepiness denoted by ESS score above 10. In addition, the regression model showed that for every 1 cm increase in neck circumference, there is a 56% independent increase in the likelihood of high risk of OSA after adjusting for age, sex, BMI, waist, hip circumferences and blood glucose.

Conclusion:

Our study shows a substantial proportion of patients with type 2 diabetes may have OSA, the key predictor being neck circumference after controlling for obesity.

Frequency of cryptococcal meningitis in HIV-1 infected patients in north central Nigeria

BACKGROUND

Cryptococcal meningitis (CM) is the most common severe life threatening fungal infection in AIDS patients. It is an important cause of morbidity and mortality There is paucity of data on the prevalence of CM in Nigeria. We aimed to determine the frequency of CM, the clinical presentation and immunological profile.

METHODS

A cross sectional study was carried out at the Jos University Teaching Hospital (JUTH). A total of 100 HIV-1 infected patients suspected of having meningitis or meningoencephalitis were subjected to cerebrospinal fluid (CSF) analysis (including Indian ink preparation and fungal culture by conventional methods) and CD4 count was determined using flow cytometry (count bit Y-R 1004 Partec Muster Germany).

RESULTS

The freguency of CM was 36% in our cohort. The commonest clinical presentation included headache (100.0%), neck stiffness (77.8%), fever (72.0%), vomiting 55.6%), personality changes (55.6%), photophobia (27.8%) and convulsions (27.8%). The mean duration of symptoms was 24 +/- 22 days with a median of 17 days. The mean CD4 count was 89 +/- 60 cells/mm3 with a median of 82 cells/mm3.

CONCLUSION

The high prevalence of CM and the associated severe immunosuppression underscores the importance of early diagnosis of HIV infection which may reduce the incidence of CM. There is the urgent need for access to Amphotericin B and fluconazole in resource constrained settings in addition to a wide access to HAART.