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  1. Article ; Online: Enhanced surveillance and data feedback loop associated with improved malaria data in Lusaka, Zambia.

    Chisha, Zunda / Larsen, David A / Burns, Matthew / Miller, John M / Chirwa, Jacob / Mbwili, Clara / Bridges, Daniel J / Kamuliwo, Mulakwa / Hawela, Moonga / Tan, Kathrine R / Craig, Allen S / Winters, Anna M

    Malaria journal

    2015  Volume 14, Page(s) 222

    Abstract: Background: Accurate and timely malaria data are crucial to monitor the progress towards and attainment of elimination. Lusaka, the capital city of Zambia, has reported very low malaria prevalence in Malaria Indicator Surveys. Issues of low malaria ... ...

    Abstract Background: Accurate and timely malaria data are crucial to monitor the progress towards and attainment of elimination. Lusaka, the capital city of Zambia, has reported very low malaria prevalence in Malaria Indicator Surveys. Issues of low malaria testing rates, high numbers of unconfirmed malaria cases and over consumption of anti-malarials were common at clinics within Lusaka, however. The Government of Zambia (GRZ) and its partners sought to address these issues through an enhanced surveillance and feedback programme at clinic level.
    Methods: The enhanced malaria surveillance programme began in 2011 to verify trends in reported malaria, as well as to implement a data feedback loop to improve data uptake, use, and quality. A process of monthly data collection and provision of feedback was implemented within all GRZ health clinics in Lusaka District. During clinic visits, clinic registers were accessed to record the number of reported malaria cases, malaria test positivity rate, malaria testing rate, and proportion of total suspected malaria that was confirmed with a diagnostic test.
    Results and discussion: Following the enhanced surveillance programme, the odds of receiving a diagnostic test for a suspected malaria case increased (OR = 1.54, 95 % CI = 0.96-2.49) followed by an upward monthly trend (OR = 1.05, 95 % CI = 1.01-1.09). The odds of a reported malaria case being diagnostically confirmed also increased monthly (1.09, 95 % CI 1.04-1.15). After an initial 140 % increase (95 % CI = 91-183 %), costs fell by 11 % each month (95 % CI = 5.7-10.9 %). Although the mean testing rate increased from 18.9 to 64.4 % over the time period, the proportion of reported malaria unconfirmed by diagnostic remained high at 76 %.
    Conclusions: Enhanced surveillance and implementation of a data feedback loop have substantially increased malaria testing rates and decreased the number of unconfirmed malaria cases and courses of ACT consumed in Lusaka District within just two years. Continued support of enhanced surveillance in Lusaka as well as national scale-up of the system is recommended to reinforce good case management and to ensure timely, reliable data are available to guide targeting of limited malaria prevention and control resources in Zambia.
    MeSH term(s) Child, Preschool ; Diagnostic Tests, Routine/utilization ; Epidemiological Monitoring ; Humans ; Infant ; Infant, Newborn ; Malaria/diagnosis ; Malaria/epidemiology ; Malaria/parasitology ; Prevalence ; Public Health Surveillance/methods ; Zambia/epidemiology
    Language English
    Publishing date 2015-05-29
    Publishing country England
    Document type Journal Article
    ISSN 1475-2875
    ISSN (online) 1475-2875
    DOI 10.1186/s12936-015-0735-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Malaria surveillance in low-transmission areas of Zambia using reactive case detection.

    Larsen, David A / Chisha, Zunda / Winters, Benjamin / Mwanza, Mercie / Kamuliwo, Mulakwa / Mbwili, Clara / Hawela, Moonga / Hamainza, Busiku / Chirwa, Jacob / Craig, Allen S / Rutagwera, Marie-Reine / Lungu, Chris / Ngwenya-Kangombe, Tokozile / Cheelo, Sanford / Miller, John M / Bridges, Daniel J / Winters, Anna M

    Malaria journal

    2015  Volume 14, Page(s) 465

    Abstract: Background: Repeat national household surveys suggest highly variable malaria transmission and increasing coverage of high-impact malaria interventions throughout Zambia. Many areas of very low malaria transmission, especially across southern and ... ...

    Abstract Background: Repeat national household surveys suggest highly variable malaria transmission and increasing coverage of high-impact malaria interventions throughout Zambia. Many areas of very low malaria transmission, especially across southern and central regions, are driving efforts towards sub-national elimination.
    Case description: Reactive case detection (RCD) is conducted in Southern Province and urban areas of Lusaka in connection with confirmed incident malaria cases presenting to a community health worker (CHW) or clinic and suspected of being the result of local transmission. CHWs travel to the household of the incident malaria case and screen individuals living in adjacent houses in urban Lusaka and within 140 m in Southern Province for malaria infection using a rapid diagnostic test, treating those testing positive with artemether-lumefantrine.
    Discussion: Reactive case detection improves access to health care and increases the capacity for the health system to identify malaria infections. The system is useful for targeting malaria interventions, and was instrumental for guiding focal indoor residual spraying in Lusaka during the 2014/2015 spray season. Variations to maximize impact of the current RCD protocol are being considered, including the use of anti-malarials with a longer lasting, post-treatment prophylaxis.
    Conclusion: The RCD system in Zambia is one example of a malaria elimination surveillance system which has increased access to health care within rural communities while leveraging community members to build malaria surveillance capacity.
    MeSH term(s) Artemisinins/administration & dosage ; Community Health Workers ; Disease Transmission, Infectious ; Drug Combinations ; Epidemiological Monitoring ; Ethanolamines/administration & dosage ; Fluorenes/administration & dosage ; Health Services Accessibility ; Humans ; Immunochromatography ; Incidence ; Malaria/diagnosis ; Malaria/drug therapy ; Malaria/epidemiology ; Malaria/transmission ; Zambia/epidemiology
    Chemical Substances Artemisinins ; Drug Combinations ; Ethanolamines ; Fluorenes ; artemether-lumefantrine combination
    Language English
    Publishing date 2015-11-19
    Publishing country England
    Document type Journal Article
    ISSN 1475-2875
    ISSN (online) 1475-2875
    DOI 10.1186/s12936-015-0895-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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