Publications by authors named "Phiri M"

Unlabelled: Urgent improvements in the diagnosis and management of infection are required to reach End TB goals. Conventional interferon-gamma release assays (IGRAs), such as QuantiFERON-TB Gold Plus (QFT-Plus), require substantial laboratory infrastructure and large blood volumes, limiting use in high-burden settings. The QIAreach QuantiFERON-TB (QIAreach QFT) was developed to overcome these challenges but has not previously been evaluated in field conditions in a low-income, high-burden country, or at scale in children.

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This study investigated the role of fish in addressing food and nutrition security challenges in Southern Africa, focusing on 10 countries including Angola, Zambia, Malawi, Mozambique, Namibia, Botswana, Zimbabwe, Lesotho, Eswatini, and South Africa. It examined the current state of food and nutrition security, fish production, and fish consumption patterns. Additionally, the study investigated the challenges and opportunities to enhance fish production in these countries thereby enhancing food and nutrition security.

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Community-based active case finding (ACF) for tuberculosis (TB) involves an offer of screening to populations at risk of TB, oftentimes with additional health promotion, community engagement and health service strengthening. Recently updated World Health Organization TB screening guidelines conditionally recommend expanded offer of ACF for communities where the prevalence of undiagnosed pulmonary TB is greater than 0.5% among adults, or with other structural risk factors for TB.

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Article Synopsis
  • The study focused on TB trends in three health facilities in Chongwe District, Zambia, from 2015-2018, using 2014 data for comparison.
  • A significant increase in presumptive TB cases was observed at Chongwe Health Centre and Chongwe District Hospital, but the proportion of bacteriologically positive TB cases dropped substantially by late 2018.
  • The introduction of GeneXpert technology improved screening but seemingly contributed to lower treatment success rates in 2017, indicating a complex relationship between diagnosis and outcomes.
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According to the World Health Organization (WHO), tobacco use causes over 8 million deaths annually including 1.3 million due to second-hand exposure. Furthermore, data from the Tobacco Atlas show that the tobacco industry continues to target new markets in the WHO African region, one of two regions where absolute numbers of smokers continue to increase.

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Article Synopsis
  • - VegDischarge v1 is a comprehensive dataset covering over 64,000 river segments in Africa, created using a combination of the VegET agro-hydrologic model and the mizuRoute routing model for the years 2001-2021.
  • - The dataset shows strong reliability in its modeling performance with statistical metrics indicating good fit at the continental level, and reveals Africa’s total average annual river discharge as approximately 3271.4 km³·year.
  • - This dataset is essential for researchers and stakeholders, providing insights into water availability and variations that support effective infrastructure planning, resource management, and climate resilience strategies.
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Background: The COVID-19 epidemic in Malawi involved almost 90,000 recorded cases and 2,638 deaths. In response to early concerns about vulnerable older people in rural areas, we developed 'Kuteteza': a COVID-19 mitigation response project. Clinicians, public health professionals, and researchers collaborated with government and district-level staff in two Southern Malawi districts.

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Crowdsourcing strategies are useful in the development of public health interventions. Crowdsourcing engages end users in a co-creation process through challenge contests, designathons or online collaborations. Drawing on our experience of crowdsourcing in four African countries, we provide guidance on designing crowdsourcing strategies across seven steps: deciding on the type of crowdsourcing strategy, convening a steering committee, developing the content of the call for ideas, promotion, evaluation, recognizing finalists and sharing back ideas or implementing the solutions.

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Introduction: Emergency contraceptive pills (ECPs) are effective and can be used safely at any age repeatedly within the same cycle. They are often favored by youth yet are underutilized. Private facilities can increase ECP access but present barriers including cost.

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Introduction: coronavirus disease 2019 (COVID-19) transmission dynamics in the communities of low- and middle-income countries, particularly sub-Saharan African countries, are still not fully understood. This study aimed to determine the characteristics of COVID-19 secondary transmission during the first wave of the epidemic (March-October 2020) in Lusaka, Zambia.

Methods: we conducted an observational study on COVID-19 secondary transmission among residents in Lusaka City, between March 18 and October 30, 2020.

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Introduction: Women engaging in sex work (WESW) have 21 times the risk of HIV acquisition compared with the general population. However, accessing HIV pre-exposure prophylaxis (PrEP) remains challenging, and PrEP initiation and persistence are low due to stigma and related psychosocial factors. The WiSSPr (Women in Sex work, Stigma and PrEP) study aims to (1) estimate the effect of multiple stigmas on PrEP initiation and persistence and (2) qualitatively explore the enablers and barriers to PrEP use for WESW in Lusaka, Zambia.

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  • This study reviews how disability weights, used to calculate DALYs in tuberculosis cost-effectiveness analyses, vary and their impact on health resource decisions.
  • It involved a systematic review of 105 studies published from 2002 to 2023, mainly focusing on low- and middle-income countries, highlighting inconsistencies in the application and citation of these weights.
  • The findings indicate methodological gaps in addressing key factors of tuberculosis, such as TB-HIV coinfection and drug resistance, prompting recommendations for improved practices in future studies.
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Background: While Malawi has made great strides increasing the number of facility-based births, maternal and neonatal mortality remains high. An intervention started in 2019 provided short-course training followed by year-long longitudinal bedside mentorship for nurse midwives at seven health facilities in Blantyre district. The intervention was initiated following invitation from the district to improve outcomes for patients during childbirth.

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Background: The Yathu Yathu ("For Us, By Us") cluster-randomized trial (CRT) evaluated a peer-led community-based sexual and reproductive health(SRH) intervention implemented to address persistent barriers to SRH service use among adolescents and young people (AYP). We report the impact of the intervention on coverage of key SRH services among AYP.

Methods: The trial was conducted from Jul 2019-Oct 2021 in two urban communities in Lusaka, Zambia, divided into 20 zones (~ 2350 AYP/zone).

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Tuberculosis (TB) transmission and prevalence are dynamic over time, and heterogeneous within populations. Public health programmes therefore require up-to-date, accurate epidemiological data to appropriately allocate resources, target interventions, and track progress towards End TB goals. Current methods of TB surveillance often rely on case notifications, which are biased by access to healthcare, and TB disease prevalence surveys, which are highly resource-intensive, requiring many tens of thousands of people to be tested to identify high-risk groups or capture trends.

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Background: Contraception is an important public health initiative for addressing maternal health outcomes associated with unplanned pregnancies, unsafe abortions and maternal deaths. Although contraceptive use has been on the rise globally, the observed increases in sub-Saharan Africa (SSA) are sub-optimal and vary among countries. In Zambia, drivers of contraceptive use transition are not well documented.

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Objective: To assess the association between breastfeeding competency, as determined by Latch, Audible swallowing, Type of nipple, Comfort, and Hold (LATCH) and Preterm Infant Breastfeeding Behavior Scale (PIBBS) scores, and exclusive breastfeeding and growth among infants with low birth weight (LBW) in India, Malawi, and Tanzania.

Study Design: We conducted LATCH and PIBBS assessments among mother-infant dyads enrolled in the Low Birthweight Infant Feeding Exploration (LIFE) observational study of infants with moderately LBW (1500g-2499 g) in India, Malawi, and Tanzania. We analyzed feeding and growth patterns among this cohort.

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There is little evidence regarding community-based delivery of STI testing and treatment for youth aged 15-24 (AYP) in Zambia. In a cluster-randomised trial, we evaluated whether offering syndromic STI screening through community-based, peer-led sexual and reproductive health services (Yathu Yathu) with referral to a local health facility for testing, increased self-reported testing for STIs (other than HIV) among AYP. Two communities in Lusaka were divided into 10 zones each (20 zones in total); by community, zones were randomly allocated (1:1) to Yathu Yathu or control.

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Background: Unintended pregnancies can pose significant public health concerns for both maternal and child health because of their associated risks and implications. Experience of unintended pregnancies may lead to delay in seeking antenatal care, thus leading to increased risk of complications during pregnancy and childbirth. Globally, the prevalence of unintended pregnancies has declined.

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The Covid-19 pandemic reified pre-existing inequalities predicated on anti-Black racism, imperial geographical cartography, and the violent language of biomilitarism. In this reflective essay I deploy tools of historical sociology to underscore the importance of race, racism, racialization, and global responses to pandemics. I considerer the following questions.

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Background: Nicotine replacement therapy (NRT) and short messaging service (SMS)-based tobacco cessation interventions have demonstrated effectiveness in reducing tobacco use in many populations, but evidence is needed on which tailored treatments are most efficacious in meeting the complex medical and psychosocial factors confronting people living with HIV (PLWH) in sub-Saharan Africa (SSA). This paper describes the protocol of a study to test the efficacy of both NRT and a tailored SMS-based tobacco use cessation intervention among PLWH in Uganda and Zambia.

Methods: In a randomized controlled trial, 800 adult PLWH who use tobacco will be recruited by health care professionals at HIV treatment centers where they are receiving care.

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Article Synopsis
  • The study investigates rotavirus infections in fully vaccinated children in Zambia, highlighting the emergence of genetically altered viruses that can evade immunity from existing vaccines.
  • Researchers conducted whole genome sequencing on diarrheal stool samples and identified several RVA strains, including mono and multiple reassortant strains, which exhibited differences in antigenic epitope compared to the common vaccine strain, Rotarix.
  • Results suggest that these genetic variations may help the virus escape neutralizing antibodies, indicating a need for improved vaccination strategies and the development of more effective universal rotavirus vaccines.
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  • Antifungal resistance (AFR) is a significant global health issue, and a study was conducted in Zambia to evaluate the knowledge, attitudes, and practices of pharmacy students regarding AFR and antifungal stewardship (AFS).
  • The study, involving 412 pharmacy students, found that while most had good knowledge (85.9%) and positive attitudes (86.7%), their practices were lacking, with only 65.8% demonstrating good practices—30.2% accessed antifungals without a prescription.
  • The results indicate a need for improved educational interventions and strategies to promote better practices and reduce inappropriate antifungal use, especially among certain demographics like urban students and advanced-year pharmacy students.
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