Publications by authors named "Mshana S"

Introduction: HIV poses a significant global health concern, affecting adolescents among other populations. This is attributed to various vulnerabilities including biological factors, gender inequalities and limited access to comprehensive sexual and reproductive health services in sub-Saharan Africa. In Tanzania, adolescent girls, and young women (AGYW) face double the risk of HIV infection compared to their male counterparts.

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Background: In Tanzania like other developing countries, TB detection is hindered by totally missed, late notification, and delayed diagnosis of active cases. Apart from having TB control strategies and interventions to detect patients and put them on treatment to cut down the chain of transmission, TB remains a health concern. Limited data exist on the burden and trends of tuberculosis in Mwanza, which includes fishing communities and living conditions that are associated with high TB transmission like overcrowding.

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  • The study highlights the serious threat of antibacterial resistance (ABR) in low-resource areas like East Africa, specifically focusing on multi-drug resistant urinary tract infections (MDR UTIs).
  • Researchers examined a variety of factors, including behavioral, environmental, socioeconomic, and demographic influences, that contribute to the risk of developing MDR UTIs among outpatients in Kenya, Tanzania, and Uganda.
  • Findings suggest that individuals at higher risk tend to have multiple social and environmental disadvantages, indicating that effective interventions should consider these intersecting factors rather than just focusing on antibiotic use alone.
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Background: Antimicrobial resistance (AMR) is a global threat to human and livestock health. Although AMR is driven by use of antimicrobials, it is often attributed to "misuse" and "overuse", particularly for antibiotics. To curb resistance, there has been a global call to embrace new forms of moral personhood that practice "proper" use, including prescription, dispensing and consumption of antimicrobials, especially antibiotics.

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  • Plasmodium spp. infections (malaria) and dengue virus are significant health issues for children in middle- and low-income countries, with a study in Mwanza, Tanzania examining their prevalence and associated factors.
  • The study analyzed 436 children, revealing malaria prevalence rates of 15.6%, 8.5%, and 12.1% through different diagnostic methods, while dengue prevalence was 7.8%.
  • Clinical symptoms of both diseases often overlap, complicating diagnosis, and highlighting the need for better laboratory tests and more extensive research on acute febrile illnesses in developing nations.
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  • High-risk HPV types 16 and 18 are linked to various cancers, while low-risk types 6 and 11 are associated with anogenital warts and other benign conditions; the study focuses on understanding the prevalence of these viruses among pregnant women in Tanzania.* -
  • A study at Bugando Medical Centre included 255 pregnant women, utilizing a structured questionnaire and ELISA testing to assess seroprevalence of HPV types 6, 11, 16, and 18.* -
  • Results showed a 63.9% overall seropositivity rate, with significant exposure to all four HPV types; the findings highlight the need for vaccination programs to mitigate HPV-related health issues in pregnant women.*
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Background: Chronic hepatitis B virus (HBV) infection is still a major public health problem. In response to the World Health Organization (WHO), Tanzania implemented immunization and treatment to achieve the eradication of HBV infection by 2030. To achieve this goal, frequent updates of demographic data, antiviral therapy eligibility, and uptake are essential.

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Background: Bacterial pneumonia is among the leading causes of morbidity and mortality worldwide. The extensive misuse and overuse of antibiotics observed during the Corona Virus Disease 2019 (COVID-19) pandemic may have changed the patterns of pathogens causing bacterial pneumonia and their antibiotic susceptibility profiles. This study was designed to establish the prevalence of culture-confirmed bacterial pneumonia and describe their antimicrobial susceptibility profile in adult patients who presented with signs and symptoms of lower respiratory tract infections (LRTIs) during the COVID-19 pandemic.

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Background: Antimicrobial resistance (AMR) poses a significant global health threat, particularly in low- and middle-income countries (LMICs). Self-treatment with antibiotics, the practice of using antibiotics without professional guidance, is often considered an important contributor to the emergence and spread of AMR.

Method: This study investigated the drivers of self-treatment in three common types of agricultural communities in northern Tanzania.

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Background: Prospective data on the effectiveness of resistance testing in informing treatment decisions and outcomes in with first-line failure in these settings is limited. This study aimed to assess the virological impact of HIV drug-resistance testing in patients with virological failure in Tanzania.

Methods: Participants were randomly assigned to either the control or the experimental group.

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Objectives: To delineate the epidemiology and antimicrobial resistance (AMR) trends of pathogens causing urinary tract infections (UTIs) during (June 2019-June 2020) and after (March-July 2023) the implementation of the National Action Plan on AMR 2017-2022 in Mwanza, Tanzania.

Methods: This cross-sectional study was conducted among 2097 patients with clinical symptoms of UTIs during (n = 1144) and after (n = 953) the National Action Plan on AMR 2017-2022. Quantitative urine culture was done to isolate significant bacteria causing UTI, which were then identified to the species level and tested for antimicrobial susceptibility.

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  • A systematic search of multiple databases was conducted to gather studies on HBV prevalence in Tanzania, using HBV surface antigen measurements up to March 1, 2023.
  • A total of 31 studies with nearly 38,000 participants revealed an average HBV prevalence of 6.91%, with higher rates in northern regions, blood donors, and community volunteers, while lower rates were seen in the lake zone and pregnant women.
  • The findings indicate Tanzania has moderately high HBV endemicity and significant regional variability, highlighting the urgent need for targeted prevention strategies and more detailed epidemiological research.
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The importance of communication in enhancing people's awareness and understanding of antimicrobial resistance (AMR) is consistently recognised in global and national action plans (NAPs). Despite this, there have been relatively few national AMR communication campaigns which use a structured approach to take account of the local context, encompass co-design with the target audience and use a logic model to help inform its design, implementation and evaluation. Designing a logic model for communication-based interventions can help map out the planning, resources, messaging, assumptions and intended outcomes of the campaign to maximise its impact, ensure it is fit for context and minimise any unintended consequences on individuals and society.

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The spread of drug-resistant bacteria into the community is an urgent threat. In most low-middle-income countries (LMICs) settings, community-acquired infection (CAI) is empirically treated with no data to support the choice of antibiotics, hence contributing to resistance development. Continuous antimicrobial resistance (AMR) data on community-acquired pathogens are needed to draft empirical treatment guidelines, especially for areas with limited culture and susceptibility testing.

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Background: In low- and middle-income countries, antibiotics are often prescribed for patients with symptoms of urinary tract infections (UTIs) without microbiological confirmation. Inappropriate antibiotic use can contribute to antimicrobial resistance (AMR) and the selection of MDR bacteria. Data on antibiotic susceptibility of cultured bacteria are important in drafting empirical treatment guidelines and monitoring resistance trends, which can prevent the spread of AMR.

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Antibacterial resistance (ABR) is a major public health threat. An important accelerating factor is treatment-seeking behaviour, including inappropriate antibiotic (AB) use. In many low- and middle-income countries (LMICs) this includes taking ABs with and without prescription sourced from various providers, including health facilities and community drug sellers.

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Objectives: To determine the prevalence of hepatitis B virus (HBV) infection, knowledge regarding HBV, vaccination status, and associated factors among household contacts of HBV index cases in Mwanza, Tanzania.

Methods: Between July and August 2023, a cross-sectional study involving 97 index cases and 402 household contacts was conducted. Data were collected using pre-tested structured questionnaire and blood samples were collected from household contacts for HBV surface antigen (HBsAg) testing.

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Mumps is an acute contagious viral disease caused by paramyxovirus characterized by complications that include orchitis, oophoritis, aseptic meningitis, and spontaneous abortion among many others. This study reports high mumps IgG seropositivity among school-aged children in rural areas of the Mbeya region, information that might be useful in understanding the epidemiology of mumps and instituting appropriate control measures including vaccination. Between May and July 2023, a cross-sectional study involving 196 enrolled children aged 5-13 years was conducted.

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The prevalence of skin diseases such as leprosy, and limited dermatological knowledge among frontline health workers (FHWs) in rural areas of Sub-Saharan Africa, led to the development of the NLR SkinApp: a mobile application (app) that supports FHWs to promptly diagnose and treat, or suspect and refer patients with skin diseases. The app includes common skin diseases, neglected tropical skin diseases (skin NTDs) such as leprosy, and HIV/AIDS-related skin conditions. This study aimed to test the supporting role of the NLR SkinApp by examining the diagnostic accuracy of its third edition.

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COVID-19 vaccination remains to be the most important intervention in the fight against the pandemic. The immunity among the vaccinated population and its durability can significantly vary due to various factors. This study investigated the humoral immune responses among individuals who received any of the COVID-19 vaccines approved for use in Tanzania.

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Article Synopsis
  • The study investigates how the COVID-19 pandemic impacted care-seeking behaviors and antibiotic use for urinary tract infection-like symptoms in Uganda and Tanzania, two East African countries with different COVID-19 policies.
  • Data was collected from outpatient patients with UTI symptoms at three time points: before COVID-19, during early COVID-19, and later in the pandemic, focusing on delays in seeking care and antibiotic use.
  • Findings showed that while delays in seeking care decreased during the pandemic, inappropriate antibiotic use, particularly metronidazole and doxycycline, significantly increased, raising concerns about adherence to treatment guidelines.
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  • Acute febrile diseases from mosquitos pose diagnostic challenges for pediatricians in sub-Saharan Africa, leading to misclassification and inappropriate use of antibiotics and antimalarials.
  • A study in Tanzania analyzed the efficacy of blood smear microscopy and rapid malaria diagnostic tests compared to a more accurate PCR-ELISA method.
  • The findings revealed that rapid diagnostic tests had higher sensitivity and specificity, significantly reducing unnecessary antimalarial prescriptions in malaria-negative patients, thereby addressing issues of drug resistance.
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  • The study analyzed measles trends in Tanzania from 2018 to 2022, highlighting a significant uptick in cases, particularly in 2022.
  • A total of 12,253 measles cases were reported, with the majority occurring among unvaccinated children and those aged 1-4 years.
  • To combat rising measles cases, the research suggests enhancing vaccination efforts and surveillance, especially to rebuild immunity disrupted during the COVID-19 pandemic.
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  • The study investigates Rotavirus genotypes in Tanzania from 2013 to 2018, specifically after the introduction of the ROTARIX vaccine.
  • A significant decline in Rotavirus positivity rates was noted, dropping from 29.3% to 17.8% over the study period, indicating the vaccine's effectiveness.
  • The analysis revealed changes in circulating genotypes, with the G1P[8] strain decreasing significantly while the G9P[4] strain surged, which underscores the need for ongoing surveillance of Rotavirus strains post-vaccination.
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Background: The burden of healthcare associated infections (HCAIs) in low- and middle-income countries (LMICs) remains underestimated due to diagnostic complexity and lack of quality surveillance systems. We designed this study to determine clinical diagnosis, laboratory-confirmed, associated factors and risks of HCAIs.

Methods: This hospital-based longitudinal cohort study was conducted between March and June 2022 among adults (≥ 18 years) admitted in medical wards at BMC in Mwanza, Tanzania.

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