Blood and body fluids exposure, post-exposure prophylaxis, and HIV self-testing among healthcare workers in northern Nigeria.

INTRODUCTION: In high-HIV burden settings, such as Nigeria, HIV self-testing and post-exposure prophylaxis (PEP) are often recommended, but not widely practiced. This study aims to identify the predictors of PEP utilization and preferences for HIV self-testing among healthcare workers in Nigeria. METHODS: A total of 403 healthcare workers from a tertiary hospital in Nigeria completed questionnaires. Adjusted odds ratios were derived from logistic regression models. RESULTS: Among the respondents, 141 (35.0%) reported experiencing at least one workplace exposure incident, with 72 (51.1%) of them receiving PEP. The majority of healthcare workers (n = 354, 87.8%) expressed a preference for HIV self-testing over traditional HIV testing and counseling. The occurrence of exposure incidents was predicted by the respondent's sex (adjusted odds ratio [aOR] = 1.25; 95% confidence interval [CI]: 1.15-3.08, female vs. male), age (aOR = 0. 16; 95% CI: 0.03-0.92, >40 vs. <30 years), profession (aOR = 1.88; 95% CI: 1.18-4.66, nurse/midwife vs. physician), work unit (aOR = 0.06; 95% CI: 0.02-0.23, obstetrics/gynecology vs. surgery), and previous HIV testing and counseling (aOR = 0.01; 95% Cl: 0.004-0.03, no vs. yes). Respondent's profession, work unit, and previous HIV testing and counseling independently predicted a preference for HIV self-testing. CONCLUSION: Further exploration of the feasibility of implementing HIV self-testing as an alternative to traditional HIV testing and counseling for workplace exposures is warranted.

"I Would Rather Take the Vaccine Than Undergo Weekly Testing": Correlates of Health Workers' Support for COVID-19 Vaccine Mandates.

This study examined the support for vaccine mandates and uptake among clinical and non-clinical staff at a tertiary hospital in northern Nigeria, focusing on variation of survey responses based on job position, socio-demographic characteristics, and perceived risk of infection with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Using an explanatory, sequential, mixed-methods design and deploying a pragmatic paradigm, 370 healthcare workers were administered structured questionnaires. This was followed by in-depth interviews with a sub-sample of respondents to further clarify the responses regarding support for the coronavirus disease 2019 (COVID-19) vaccine mandate. Findings demonstrated that less than one-half of respondents supported the COVID-19 mandate, and only one in three had received the recommended COVID-19 vaccine doses. Support for the vaccine mandate and vaccine uptake were predicted by profession, work experience, number of children, health status, and risk perception. Support for the vaccine mandate was ascribed to ethical and professional duty, whereas opposition was associated with respect for autonomy and human rights. This study documents the need to enhance support for vaccine mandates and uptake among healthcare workers through sustainable strategies, as Nigeria's healthcare workers are considered a source of trust and role models for the rest of society.

'Why Should I Take the COVID-19 Vaccine after Recovering from the Disease?' A Mixed-methods Study of Correlates of COVID-19 Vaccine Acceptability among Health Workers in Northern Nigeria.

We assessed the acceptability of COVID-19 vaccine, predictors, and reasons for vaccine hesitancy among clinical and non-clinical staff at a tertiary hospital in Kano, northern Nigeria.Using a mixed-methods design, structured questionnaires were administered to 284 hospital staff, followed by 20 in-depth interviews with a purposive sub-sample. Logistic regression and the framework approach were used to analyze the data.Only 24.3% (n = 69) of the respondents were willing to accept the COVID-19 vaccine. Acceptance was lower among females (Adjusted Odds Ratio (aOR) = 0.37, 95% Confidence Interval (95%CI): 0.18-0.77 (male vs. female), nurses/midwives (aOR = 0.41, 95%CI:0.13-0.60, physicians vs. nurses/midwives), persons not tested for COVID-19 (aOR = 0.32, 95%CI 0.13-0.79) (no vs. yes) and those who perceived themselves to be at low risk of COVID-19 (aOR = 0.47, 95%CI,0.21-0.89, low vs. high). In contrast, vaccine acceptance was higher among more experienced workers (aOR = 2.28, 95%CI:1.16-8.55, ≥10 vs. <5 years). Vaccine acceptance was also higher among persons who did not worry about vaccine efficacy (aOR = 2.35, 95%CI:1.18-6.54, no vs. yes), or about vaccine safety (aOR = 1.76, 95%CI: 1.16-5.09, no vs. yes), side effects (aOR = 1.85, 95%CI:1.17-5.04, no vs. yes), or rumors (aOR = 2.55, 95%CI:1.25-5.20, no vs. yes). The top four reasons for vaccine hesitancy included distrust, inadequate information, fear of long-term effects, and infertility-related rumors.Concerted efforts are required to build COVID-19 vaccine confidence among health workers in Kano, Nigeria.Our findings can help guide implementation of COVID-19 vaccination in similar settings.

Predictors of Safer Conception Practices Among HIV-Infected Women in Northern Nigeria.

BACKGROUND: Persons living with HIV often face discrimination in safe sex and reproductive choices, especially in lowresource settings. This study assessed fertility desires and intentions, risk perception and correlates of ever use of at least one safer conception method among HIV-infected women attending a tertiary health facility in Kano, Nigeria. METHODS: Structured questionnaires were administered to a cross section of 328 of 427 eligible HIV-infected women. Fertility desires and intentions, risk perception and safer conception practice were analyzed. Logistic regression was employed to assess for predictors. RESULTS: Of the 328 respondents, 150 respondents (45.7%) wanted more children. The proportions of respondents aware of their transmission risk during pregnancy, delivery, and breastfeeding were 69.5%, 75.3%, and 78.9%, respectively. Further, 68.9% of respondents were aware of the prospects of bearing HIV-negative children without infecting their partners. About 64.8% of women were aware of at least one safer conception method. Safer conception methods everused by the participants include: antiretroviral therapy (ART) (36.7%), timed unprotected intercourse with (10.9%), and without pre-exposure prophylaxis (PrEP) (17.2%), intravaginal insemination (7.3%) and intrauterine insemination (4.7%). Safer conception practice was predicted by marital status (married versus single, adjusted odds ratio [AOR]=1.50, 95% CI =1.10-3.55), parity (2-4 versus 0, AOR=12.1, 95% CI=3.7-39.8), occupation (civil servants versus traders, AOR=0.37, 95% CI=0.16-0.86), husband's serostatus (seroconcordant versus serodiscordant) (AOR=1.51, 95% CI=1.13-4.64), couple contraceptive use (users versus non-users) (AOR=1.62, 95% CI=1.16-5.83) and transmission risk perception (high risk versus low/no risk) (AOR=2.14, 95% CI=1.18-3.90). CONCLUSION: We found high levels of fertility desires and intentions and moderate risk perception among a cohort of HIV-infected women in urban Kano, Nigeria. The use of safer conception practices was not common. Our findings underscore the need for healthcare provider capacity building to enhance safer conception counseling and service delivery.

Determinants of Infant Feeding Practices Among HIV-Infected Mothers in Urban Kano, Nigeria.

BACKGROUND: Despite advances in prevention of mother-to-child HIV transmission, infants in Africa remain at risk of HIV acquisition from inappropriate feeding practices. RESEARCH AIMS: To assess maternal knowledge and predictors of appropriate infant feeding practices among HIV-infected mothers attending a tertiary facility in Kano, Nigeria. METHOD: A cross section of 203 HIV-positive mothers were interviewed using structured, pretested survey questionnaires. Knowledge scores and infant feeding practices were analyzed. Multivariate logistic regression was employed to ascertain independent correlates of infant feeding practices in the study sample. RESULTS: Over a third (37.4%) of the participants were aware of the risk of HIV transmission through breastfeeding. The proportion of participants with good, fair, and poor knowledge of recommended feeding options for HIV-exposed infants was 4.4%, 73.4%, and 22.2%, respectively. About three in four participants (73.9%) breastfed their index infants exclusively for the first six months. Approximately 7.4% of respondents practiced mixed feeding (breastfeeding plus infant formula). Counseling on infant feeding (Adjusted Odds Ratio [AOR] = 2.16, 95% Confidence Interval [CI] = [1.58, 4.15]) and hospital delivery (AOR = 3.02, 95% CI = [2.67, 7.84]) predicted appropriate infant feeding practice. CONCLUSION: Appropriate infant feeding practices were significantly associated with prior infant feeding counseling and delivery in a hospital setting. HIV-infected mothers in this setting should receive counseling on infant feeding early in their pregnancy and be educated on the importance of hospital delivery.

Trends in Poliovirus Seroprevalence in Kano State, Northern Nigeria.

Background: Kano state has been a protracted reservoir of poliovirus in Nigeria. Immunity trends have been monitored through seroprevalence surveys since 2011. The survey in 2015 was, in addition, intended to assess the impact of use of inactivated poliovirus vaccine (IPV). Methods: It was a health facility based seroprevalence survey. Eligible children aged 6-9, 12-15 and 19-22 months of age brought to the paediatrics outpatient department of Murtala Mohammad Specialist Hospital between 19 October and 6 November 2015, were screened for eligibility. Eligible children were enrolled after parental consent, history taken, physical examination conducted, and a blood sample collected to test for neutralizing antibody titres against the three poliovirus serotypes. Results: Overall, 365 results were available in the three age groups. In the 6-9-month-old age group, the seroprevalence was 73% (95% confidence interval [CI] 64-80%), 83% (95% CI 75-88%), and 66% (95% CI 57-73%) for serotypes 1, 2, and 3, respectively. In the 12-15- and 19-22-month-old age groups, seroprevalence was higher but still remained <90% across serotypes. Seroprevalence to serotypes 1 and 3 in 2015 was similar to 2014; however, for serotype 2 there was a significant improvement. IPV received in supplemental immunization activities was found to be a significant predictor of seropositivity among 6-9-month-old infants for serotypes 1 and 2. Conclusions: Seroprevalence for serotypes 1 and 3 remains low (<80%) in 6-9-month-olds. This poses a significant risk for poliovirus spread if reintroduced into the population. Efforts to strengthen immunization coverage are imperative to secure and sustain high population immunity.

Deaths during tuberculosis treatment among paediatric patients in a large tertiary hospital in Nigeria.

BACKGROUND: Despite availability of effective cure, tuberculosis (TB) remains a leading cause of death in children. In many high-burden countries, childhood TB is underdiagnosed and underreported, and care is often accessed too late, resulting in adverse treatment outcomes. In this study, we examined the time to death and its associated factors among a cohort of children that commenced TB treatment in a large treatment centre in northern Nigeria. METHODS: This is a retrospective cohort study of children that started TB treatment between 2010 and 2014. We determined mortality rates per 100 person-months of treatment, as well as across treatment and calendar periods. We used Cox proportional hazards regression to determine adjusted hazard ratios (aHR) for factors associated with mortality. RESULTS: Among 299 children with a median age 4 years and HIV prevalence of 33.4%; 85 (28.4%) died after 1,383 months of follow-up. Overall mortality rate was 6.1 per 100 person-months. Deaths occurred early during treatment and declined from 42.4 per 100 person-months in the 1st week of treatment to 2.2 per 100 person-months after at the 3rd month of treatment. Mortality was highest between October to December period (9.1 per 100 pm) and lowest between July and September (2.8 per 100 pm). Risk factors for mortality included previous TB treatment (aHR 2.04:95%CI;1.09-3.84); HIV infection (aHR 1.66:95%CI;1.02-2.71), having either extra-pulmonary disease (aHR 2.21:95%CI;1.26-3.89) or both pulmonary and extrapulmonary disease (aHR 3.03:95%CI;1.70-5.40). CONCLUSIONS: Mortality was high and occurred early during treatment in this cohort, likely indicative of poor access to prompt TB diagnosis and treatment. A redoubling of efforts at improving universal health coverage are required to achieve the End TB Strategy target of zero deaths from TB.

High mortality among tuberculosis patients on treatment in Nigeria: a retrospective cohort study.

BACKGROUND: Tuberculosis (TB) remains a leading cause of death in much of sub-Saharan Africa despite available effective treatment. Prompt initiation of TB treatment and access to antiretroviral therapy (ART) remains vital to the success of TB control. We assessed time to mortality after treatment onset using data from a large treatment centre in Nigeria. METHODS: We analysed a retrospective cohort of TB patients that commenced treatment between January 2010 and December 2014 in Aminu Kano Teaching Hospital. We estimated mortality rates per person-months at risk (pm). Cox proportional hazards model was used to determine risk factors for mortality. RESULTS: Among 1,424 patients with a median age of 36.6 years, 237 patients (16.6%) died after commencing TB treatment giving a mortality rate of 3.68 per 100 pm of treatment in this cohort. Most deaths occurred soon after treatment onset with a mortality rate of 37.6 per 100 pm in the 1st week of treatment. Risk factors for death were being HIV-positive but not on anti-retroviral treatment (ART) (aHR 1.39(1 · 04-1 · 85)), residence outside the city (aHR 3 · 18(2.28-4.45)), previous TB treatment (aHR 3.48(2.54-4.77)), no microbiological confirmation (aHR 4.96(2.69-9.17)), having both pulmonary and extra-pulmonary TB (aHR 1.45(1.03-2.02), and referral from a non-programme linked clinic/centre (aHR 3.02(2.01-4.53)). CONCLUSIONS: We attribute early deaths in this relatively young cohort to delay in diagnosis and treatment of TB, inadequate treatment of drug-resistant TB, and poor ART access. Considerable expansion and improvement in quality of diagnosis and treatment services for TB and HIV are needed to achieve the sustainable development goal of reducing TB deaths by 95% by 2035.

Poliovirus seroprevalence before and after interruption of poliovirus transmission in Kano State, Nigeria.

INTRODUCTION: In September 2015, Nigeria was removed from the list of polio-endemic countries after more than 12months had passed since the detection of last wild poliovirus case in the country on 24 July 2014. We are presenting here a report of two polio seroprevalence surveys conducted in September 2013 and October 2014, respectively, in the Kano state of northern Nigeria. METHODS: Health facility based seroprevalence surveys were undertaken at Murtala Mohammad Specialist Hospital, Kano. Parents or guardians of children aged 6-9months, 36-47months, 5-9years and 10-14years in 2013 and 6-9months and 19-22months (corresponding to 6-9months range at the time of 2013 survey) in 2014 presenting to the outpatient department, were approached for participation, screened for eligibility and asked to provide informed consent. A questionnaire was administered and a blood sample collected for polio neutralization assay. RESULTS: Among subjects aged 6-9months in the 2013 survey, seroprevalence was 58% (95% confidence interval [CI] 51-66%) to poliovirus type 1, 42% (95% CI 34-50%) to poliovirus type 2, and 52% (95% CI 44-60%) to poliovirus type 3. Among children 36-47months and older, seroprevalence was 85% or higher for all three serotypes. In 2014, seroprevalence in 6-9month infants was 72% (95% CI 65-79%) for type 1, 59% (95% CI 52-66%) for type 2, and 65% (95% CI 57-72%) for type 3 and in 19-22months, 80% (95% CI 74-85%), 57% (49-63%) and 78% (71-83%) respectively. Seroprevalence was positively associated with history of increasing oral poliovirus vaccine doses. CONCLUSIONS: There was significant improvement in seroprevalence in 2014 over the 2013 levels indicating a positive impact of recent programmatic interventions. However the continued low seroprevalence in 6-9month age is a concern and calls for improved immunization efforts to sustain the polio-free Nigeria.

Prevalence and Patterns of Sexual Activity during Pregnancy in Kano, Northern Nigeria.

Very little has been documented on sexual activity during pregnancy in northern Nigeria. We examined prevalence and factors associated with vaginal intercourse during pregnancy in Kano, Nigeria. A cross section of 336 pregnant women attending antenatal care at Aminu Kano Teaching Hospital was interviewed using pre-tested structured questionnaire. Nearly all respondents (96.4%; n=324) reported vaginal intercourse during the index pregnancy. By trimester, 88.4%, 90.7% and 97.4% women had coitus during the first, second and third trimesters respectively, (P>0.05). Relative to pre-pregnancy behavior, 55.4%, 16.3% and 28.3% women reported decreased, increased and unchanged coital frequency, respectively. Ninety six (29.6%) of the sexually active women reported having problems. These included vaginal soreness/pain, abdominal discomfort, bleeding, rupture of the membranes, urinary incontinence and vaginal dryness and itching. History of previous miscarriages and higher pre-pregnancy coital frequency were significantly associated with sexual activity during pregnancy (P <0.05). Vaginal intercourse is nearly universal among pregnant women attending this center with little variation between the trimesters. Health providers should counsel couples on safe coital activity during pregnancy and clear any misconceptions.

Survey of poliovirus antibodies in Kano, Northern Nigeria.

INTRODUCTION: In 1988, the World Health Assembly resolved to eradicate poliomyelitis. Since then, much progress towards this goal has been made, but three countries including Nigeria remain polio-endemic as of end 2012. To assess the immunity level against poliomyelitis in young children in Northern Nigeria, we conducted a seroprevalence survey in the Kano Metropolitan Area (KMA) in May 2011. METHODS: Parents or guardians of infants aged 6-9months or children aged 36-47months presenting to the outpatient department of Murtala Mohammad Specialist Hospital were approached for participation, screened for eligibility and were asked to provide informed consent. After that, a questionnaire was administered and blood was collected for neutralization assay. RESULTS: A total of 327 subjects were enrolled. Of these, 313 (96%) met the study requirements and were analyzed (161 [51%] aged 6-9months and 152 [49%] aged 36-47months). Among subjects aged 6-9months, seroprevalence was 81% (95% confidence interval [CI] 75-87%) to poliovirus type 1, 76% (95% CI 68-81%) to poliovirus type 2, and 73% (95% CI 67-80%) to poliovirus type 3. Among subjects aged 36-47months, the seroprevalence was 91% (95% CI 86-95%) to poliovirus type 1, 87% (95% CI 82-92%) for poliovirus type 2, and 86% (95% CI 80-91%) to poliovirus type 3. Seroprevalence was associated with history of oral poliovirus vaccine (OPV) doses, maternal education and gender. CONCLUSIONS: Seroprevalence is lower than required levels for poliovirus interruption in the KMA. Persistence of immunity gaps in the 36-47months group is a big concern. Since higher number of vaccine doses is associated with higher seroprevalence, it implies that failure-to-vaccinate and not vaccine failure accounts for the suboptimal seroprevalence. Intensified efforts are necessary to administer polio vaccines to all target children and surpass the threshold levels for herd immunity.