Operational coverage and timeliness of reactive case detection for malaria elimination in Zanzibar, Tanzania (Publications)
Since 2012, the Zanzibar Malaria Elimination Program has been implementing reactive case detection (RACD). Health facility (HF) staff send individual malaria case notifications by using mobile phones, [...] triggering a review of HF records and malaria testing and treatment at the household level by a district malaria surveillance officer. We assessed the completeness and timeliness of this system, from [...] Zanzibar achieved high operational coverage, timeliness was suboptimal. Patients...
The potential of pregnant women as a sentinel population for malaria surveillance (Publications)
Monthly ANC malaria test-positivity data from all Tanzanian health facilities for January 2014 to May 2016 was compared to prevalence data from the School Malaria Parasitaemia Survey 2015, the Malaria Indicator [...] proposed as a pragmatic sentinel population for malaria surveillance. However, the representativeness of routine ANC malaria test-positivity and its relationship with prevalence in other population subgroups [...] Indicator Survey (MIS) 2015/16, the Malaria Atlas Project 2015, and a...
Increase of dose associated with decrease in protection against controlled human malaria infection by PfSPZ vaccine in Tanzanian adults (Publications)
reducing malaria's impact. PfSPZ Vaccine (radiation attenuated, aseptic, purified, cryopreserved Plasmodium falciparum [Pf] sporozoites [SPZ]) has been well tolerated and safe in > 1,526 malaria-naive and [...] (VE) of 5 doses of 2.7x105 PfSPZ of PfSPZ Vaccine was assessed in adults against controlled human malaria infection (CHMI) in the U.S. and Tanzania and intense field transmission of heterogeneous Pf in Mali
Resurgence of malaria infection after mass treatment: a simulation study (Publications)
management, and test-and-treat interventions. Individual-based stochastic models of malaria transmission (OpenMalaria) were then used to estimate the probability and likely rates of resurgence in realistic [...] if mass drug administration (MDA) might shorten the time to elimination of Plasmodium falciparum malaria, when vector control measures and reactive surveillance strategies are scaled-up. A concern with [...] of bistability. Importation rates are important only when this threshold is very...
Differential impact of malaria control interventions on <em>P. falciparum</em> and <em>P. vivax</em> infections in young Papua New Guinean children (Publications)
children and the key risk factors for malaria infection and illness in 2013. RESULTS: Between 2006 and 2008, P. falciparum infection prevalence, molFOB, and clinical malaria episodes reduced by 47%, 59% and [...] INTRODUCTION: As malaria transmission declines, understanding the differential impact of intensified control on Plasmodium falciparum relative to Plasmodium vivax and identifying key drivers of ongoing [...] cohort, children aged 1-5 years were actively monitored for infection and...
Investigating the drivers of the spatio-temporal patterns of genetic differences between <em>Plasmodium falciparum</em> malaria infections in Kilifi... (Publications)
Knowledge of how malaria infections spread locally is important both for the design of targeted interventions aiming to interrupt malaria transmission and the design of trials to assess the interventions [...] to account for the observed patterns. The mean geographic distance between parent and offspring malaria infections for the base model was 0.5 km (95% CI 0.3-1.5), for a distribution with 68% of distances
Strengthening surveillance systems for malaria elimination by integrating molecular and genomic data (Publications)
elimination efforts are currently going on with the objective of reducing malaria morbidity and mortality by 90% and malaria elimination in at least 35 countries by 2030. Strengthening surveillance systems [...] Unprecedented efforts in malaria control over the last 15 years have led to a substantial decrease in both morbidity and mortality in most endemic settings. However, these progresses have stalled over [...] such as polymerase chain reaction (PCR) and quantitative PCR (qPCR) are...
The development and evaluation of a self-marking unit to estimate malaria vector survival and dispersal distance (Publications)
diseases such as malaria. Mosquito mark-release-recapture (MMRR) experiments are a popular method of measuring the survival and dispersal of disease vectors; however, examples with African malaria vectors are [...] This study demonstrates the successful use of a self-marking device in an MMRR study with African malaria vectors. This method may be useful in investigating population structure and dispersal of mosquitoes
Impact of climate variability and interventions on malaria incidence and forecasting in Burkina Faso (Publications)
BACKGROUND: Malaria remains a climate-driven public health issue in Burkina Faso, yet the interactions between climatic factors and malaria interventions across different zones are not well understood [...] suitability and malaria incidence. Wavelet analysis was conducted to understand better how fluctuations in climatic factors across different time scales and climatic zones affect malaria transmission dynamics [...] . This study estimates time delays in the effects of climatic factors on malar...