Publications by authors named "Olalekan A Ayo-Yusuf"

This study assessed sexually transmitted infection (STI) results among nonhealth-seeking men who have sex with men (MSM) who had not previously screened for curable STIs. Secondary data analysis of a sample of 164 MSM who were STI infection naïve was performed. Data were collected in the Clinical Research Unit (MeCRU) among the MSM in the Tshwane North area, South Africa.

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Article Synopsis
  • * Five key themes emerged from the analysis, revealing that vendors started selling tobacco mainly due to demand and profit, and they largely lacked awareness and compliance with existing laws.
  • * While many vendors supported some regulations like banning sales to minors, they were indifferent or negative towards other restrictions; overall, they believed that quitting tobacco sales would not significantly harm their businesses.
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Several studies have demonstrated the effectiveness of motivational interviewing (MI) in reducing sexual risk behaviors. However, limited information is available on the acceptability of brief MI among men who have sex with men (MSM) in poor resource settings like sub-Saharan Africa. The objective of this study was to assess the views of MSM about the benefits and utility of brief MI (bMI) in changing their risky behavior.

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Introduction: Using more than one tobacco product increases the risk of tobacco-related diseases. We investigated trends in the prevalence and dual use of factory-made (FM) cigarettes, other tobacco products, and electronic cigarettes (e-cigarettes) in South Africa over a 12-year period.

Methods: Data from five waves (2007, 2010, 2011, 2017, and 2018) of the South African Social Attitudes Survey (n=14582) were analyzed.

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Recent studies have shown softening among smokers in different countries and in different population groups i.e., as smoking prevalence declined remaining smokers made more quit attempts and smoked fewer cigarettes per day (CPD), as opposed to hardening.

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Alcohol and tobacco use may lead to negative treatment outcomes in tuberculosis (TB) patients, and even more so if they are HIV-infected. We developed and tested the feasibility of a complex behavioral intervention (ProLife) delivered by lay health workers (LHWs) to improve treatment outcomes in TB patients who smoke tobacco and/or drink alcohol, at nine clinics in South Africa. The intervention comprised three brief motivational interviewing (MI) sessions augmented with a short message service (SMS) program, targeting as appropriate: tobacco smoking, harmful or hazardous drinking and medication adherence.

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Yearly, tobacco use kills about 8 million people globally, 80% of whom live in low/middle-income countries. Given sub-Saharan Africa's (SSA) rapidly increasing and youthful population, growing incomes and the increased presence of the tobacco industry, the number of tobacco users is growing. The region is predicted to face a heavier burden of tobacco-related diseases and deaths in the future.

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Article Synopsis
  • The study aimed to evaluate the ProLife behavioral intervention's impact on tuberculosis (TB) treatment success and related factors like medication adherence, smoking, and alcohol use.
  • Conducted as a randomized controlled trial in 27 South African primary care clinics, 574 adults starting TB treatment were assigned to either the ProLife intervention or standard care.
  • Results indicated no significant differences in TB treatment success rates or other secondary outcomes between the intervention group and the control group.
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Objectives: DESIGN: Cross-sectional.

Setting: Household-based survey.

Participants: 3063 individuals who participated in the 2017 South African Social Attitudes survey, a nationally representative, in-person survey of the non-institutionalised civilian adult population aged ≥16 years EXPOSURE: 'In the past 12 months, have you seen advertisements or promotions for e-cigarettes (including e-shisha, e-pipe) on any of the following media: newspapers/magazines, billboards, in the malls or any other source?'

Main Outcomes: Beliefs and attitudes regarding e-cigarettes.

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As a public health measure against COVID-19, South Africa restricted the sale of "tobacco, e-cigarettes and related products" for 5 months, ending on August 17, 2020. We examined marketing activities related to novel tobacco products (e-cigarettes and heated tobacco products) during this restriction. Using web scraping, we accessed data for 2661 e-cigarette liquids marketed online by South African vendors in June 2020.

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Introduction: The aim of this study was to determine trends in receiving quit advice from healthcare professionals among current smokers in South Africa, pre- and post-adoption of Article 14 guidelines of the WHO FCTC in 2010, and to determine the association between quit advice, e-cigarette use and quit attempt.

Methods: This study was a secondary data analysis involving 2206 ever-smokers aged ≥16 years who participated in the South African Social Attitude Surveys conducted in 2007, 2010 and 2017. Data included participants' sociodemographics, tobacco, and/or e-cigarette use (for years 2010 and 2017 only), exposure to others' smoking at home and/or work or public places, quit advice, and quit attempts.

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Article Synopsis
  • The study compared the annual costs of using e-cigarettes versus traditional cigarettes in South Africa and estimated potential tax revenue from e-cigarettes if taxed as proposed by the government.
  • E-cigarette costs ranged from ZAR 8,574.69 to ZAR 19,780.83 per year, while traditional cigarettes cost about ZAR 6,693, showing e-cigarettes could be more expensive overall.
  • Projections indicate revenue from taxing e-cigarettes at 75% of the cigarette tax could reach ZAR 2.20 billion, suggesting that a higher tax could limit youth access while encouraging smokers to switch to less harmful alternatives.
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We estimated the spatial distribution of e-cigarette vape shops in South Africa and measured associations with tobacco use among adults. We linked geocoordinates of identified vape shops to internet protocol addresses of individual participants in the 2018 Health 24 survey (n = 18,208). We used logistic regression to measure the associations between proximity to vape shops and tobacco-related behaviors.

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Importance: To prepare for future coronavirus disease 2019 (COVID-19) waves, Nigerian policy makers need insights into community spread of COVID-19 and changes in rates of infection associated with government-mandated closures and restrictions.

Objectives: To measure the association of closures and restrictions with aggregate mobility and the association of mobility with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections and to characterize community spread of COVID-19.

Design, Setting, And Participants: This cross-sectional study used aggregated anonymized mobility data from smartphone users in Nigeria who opted to provide location history (from a pool of up to 40 million individuals) collected between February 27 and July 21, 2020.

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Current South African tobacco control law allows for 25% designated smoking areas in some indoor public places. This study investigates non-smokers' exposure to second-hand smoke (SHS) in workplaces, homes, cafés/restaurants, and shebeens (local bars) using data from the 2017 South African Social Attitude Survey. Factors associated with any level of exposure were explored using multiple-variable-adjusted logistic regression analysis.

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Introduction: Shisha which was formally popular mostly in the Eastern Mediterranean region is now gaining popularity globally and has become a trending tobacco product in Nigeria. The increasing popularity of shisha is possibly driven by the attractive flavours and the misperception that it is safer than traditional cigarettes. Since the media plays a significant influence on public awareness, perception and understanding of various issues, this study sought to explore the coverage of shisha use by five national newspapers in Nigeria.

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Background: South Africa is among the seven highest tuberculosis (TB) burden countries. Harmful lifestyle behaviours, such as smoking and alcohol, and poor adherence to medication can affect clinical outcomes. Modification of these behaviours is likely to improve TB treatment outcomes and has proven possible using motivational interviewing (MI) techniques or use of short message service (SMS) text messaging.

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Alcohol and tobacco use may lead to negative treatment outcomes in tuberculosis (TB) patients, and even more so if they are HIV-infected. We developed and tested the feasibility of a complex behavioral intervention (ProLife) delivered by lay health workers (LHWs) to improve treatment outcomes in TB patients who smoke tobacco and/or drink alcohol, at nine clinics in South Africa. The intervention comprised three brief motivational interviewing (MI) sessions augmented with a short message service (SMS) program, targeting as appropriate: tobacco smoking, harmful or hazardous drinking and medication adherence.

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Tobacco use and oral sex (OS) are important risk factors for oral and oropharyngeal Human papillomavirus (HPV) infection. Little is known about the prevalence of OS practice in South Africa. This study aimed to determine the prevalence of OS practice and tobacco use in a South African patient population.

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Conceptual frameworks for health policy analysis guide investigations into interactions between institutions, interests, and ideas to identify how to improve policy decisions and outcomes. This review assessed constructs from current frameworks and theories of health policy analysis to (1) develop a preliminary synthesis of findings from selected frameworks and theories; (2) analyze relationships between elements of those frameworks and theories to construct an overarching framework for health policy analysis; and then, (3) apply that overarching framework to analyze tobacco control policies in Togo and in South Africa. This Comprehensive Framework for Multi-Sectoral Approach to Health Policy Analysis has 4 main constructs: context, content, stakeholders, and strategies.

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Background: Tobacco use among people living with HIV results in excess morbidity and mortality. However, very little is known about the extent of tobacco use among people living with HIV in low-income and middle-income countries (LMICs). We assessed the prevalence of tobacco use among people living with HIV in LMICs.

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Introduction: Snus may present lower health risks than cigarettes, but its harm reduction potential may be undermined if used dually with cigarettes. The likelihood of exclusive snus use compared with dual use may depend in part on the capacity of snus to deliver nicotine in doses that are satisfactory to smokers. We examined characteristics of "American snus" products, including nicotine levels, and compared to snus products that are more typical of Sweden.

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