Browsing by Author "Malunguza, N.J."

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    Perceptions of Healthcare Workers on the Attributes of the Integrated Disease Surveillance and Response System in Zimbabwe
    (2024) Mteliso, F.; Adalier, A.; Malunguza, N.J.; Chiyaka, E.T.
    Objective: To investigate healthcare workers' perceptions of the integrated disease surveillance and response (IDSR) strategy. Methods: A cross-sectional survey of healthcare workers (HCWs) was conducted from December 2021 to June 2022 to assess their perceptions of the IDSR system attributes. Results: Of the 409 respondents, 12 (2.9%) reported no prior training on disease surveillance. The IDSR was deemed simple, acceptable, useful, and timely by most participants. There were sharp differences in perceptions of flexibility and simplicity between doctors and the other healthcare professionals. However, acceptability, timeliness, and usefulness were uniformly perceived. Healthcare workers with at least 11-years’ experience perceived the usefulness of the IDSR system significantly higher than those with lesser years of experience. However, work experience did not have an impact on HCWs perceptions of the simplicity, timeliness, and flexibility of the IDSR system. Conclusions: Most healthcare workers have positive perceptions of the IDSR approach. However, there are reservations about how well the system can adapt to changing conditions and demands (flexibility) and how well it simplifies the implementation processes. These findings demonstrate the necessity of adopting cutting-edge strategies for capacity building as well as ongoing professional development of healthcare professionals responsible for the implementation of the IDSR strategy.
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    Quantifying early COVID-19 outbreak transmission in South Africa and exploring vaccine efficacy scenarios
    (2020-07-24) Mukandavire, Z.; Nyabadza, F.; Malunguza, N.J.; Cuadros, D.F.; Shiri, T.; Musuka, G.
    The emergence and fast global spread of COVID-19 has presented one of the greatest public health challenges in modern times with no proven cure or vaccine. Africa is still early in this epidemic, therefore the extent of disease severity is not yet clear. We used a mathematical model to fit to the observed cases of COVID-19 in South Africa to estimate the basic reproductive number and critical vaccination coverage to control the disease for different hypothetical vaccine efficacy scenarios. We also estimated the percentage reduction in effective contacts due to the social distancing measures implemented. Early model estimates show that COVID-19 outbreak in South Africa had a basic reproductive number of 2.95 (95% credible interval [CrI] 2.83–3.33). A vaccine with 70% efficacy had the capacity to contain COVID-19 outbreak but at very higher vaccination coverage 94.44% (95% Crl 92.44–99.92%) with a vaccine of 100% efficacy requiring 66.10% (95% Crl 64.72–69.95%) coverage. Social distancing measures put in place have so far reduced the number of social contacts by 80.31% (95% Crl 79.76–80.85%). These findings suggest that a highly efficacious vaccine would have been required to contain COVID-19 in South Africa. Therefore, the current social distancing measures to reduce contacts will remain key in controlling the infection in the absence of vaccines and other therapeutics.