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Malaria surveillance

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https://www.readbyqxmd.com/read/28645716/guide-to-active-vaccine-safety-surveillance-report-of-cioms-working-group-on-vaccine-safety-executive-summary
#1
U Heininger, K Holm, I Caplanusi, S R Bailey
In 2013, the Council for International Organizations of Medical Sciences (CIOMS) created a Working Group on Vaccine Safety (WG) to address unmet needs in the area of vaccine pharmacovigilance. Generating reliable data about specific vaccine safety concerns is becoming a priority due to recent progress in the development and deployment of new vaccines of global importance, as well as novel vaccines targeting diseases specifically endemic to many resource-limited countries (RLCs), e.g. malaria, dengue. The WG created a Guide to Active Vaccine Safety Surveillance (AVSS) to assist national regulatory authorities and national immunization program officers in RLCs in determining the best course of action with regards to non-routine pharmacovigilance activities, when confronted with a launch of a new vaccine or a vaccine that is new to their country...
June 20, 2017: Vaccine
https://www.readbyqxmd.com/read/28643631/the-anopheles-gambiae-2la-chromosome-inversion-is-associated-with-susceptibility-to-plasmodium-falciparum-in-africa
#2
Michelle M Riehle, Tullu Bukhari, Awa Gneme, Wamdaogo M Guelbeogo, Boubacar Coulibaly, Abdrahamane Fofana, Adrien Pain, Emmanuel Bischoff, Francois Renaud, Abdoul H Beavogui, Sekou F Traore, N'Fale Sagnon, Kenneth D Vernick
Chromosome inversions suppress genetic recombination and establish co-adapted gene complexes, or supergenes. The 2La inversion is a widespread polymorphism in the Anopheles gambiae species complex, the major African mosquito vectors of human malaria. Here we show that alleles of the 2La inversion are associated with natural malaria infection levels in wild-captured vectors from West and East Africa. Mosquitoes carrying the more-susceptible allele (2L+(a)) are also behaviorally less likely to be found inside houses...
June 23, 2017: ELife
https://www.readbyqxmd.com/read/28640824/molecular-diagnosis-of-plasmodium-ovale-by-photo-induced-electron-transfer-fluorogenic-primers-pet-pcr
#3
David Akerele, Dragan Ljolje, Eldin Talundzic, Venkatachalam Udhayakumar, Naomi W Lucchi
Accurate diagnosis of malaria infections continues to be challenging and elusive, especially in the detection of submicroscopic infections. Developing new malaria diagnostic tools that are sensitive enough to detect low-level infections, user friendly, cost effective and capable of performing large scale diagnosis, remains critical. We have designed novel self-quenching photo-induced electron transfer (PET) fluorogenic primers for the detection of P. ovale by real-time PCR. In our study, a total of 173 clinical samples, consisting of different malaria species, were utilized to test this novel PET-PCR primer...
2017: PloS One
https://www.readbyqxmd.com/read/28626211/once-malaria-is-eliminated-more-attention-should-be-paid-to-imported-malaria-data-from-five-years-of-surveillance-in-the-city-of-yiwu-in-eastern-china
#4
Xuanjun Dong, Jie Yang, Lianqin Lou, Liebo Zhu, Xiayan Feng, Linong Yao
This study reviewed and analyzed data on malaria cases in Yiwu from 2012 to 2016 via a webbased system for managing and reporting information on infectious diseases. A total of 161 cases were diagnosed (77.02% due to Plasmodium falciparum, 18.01% due to P. vivax, 4.35% due to P. ovale, and 0.62% due to P. malariae). One case was imported from Yunnan Province in China and the others were imported from overseas. The ratio of male to female patients was 7.47:1. The average age was 36.34 years (SD: 9.63). Most cases (87...
June 18, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28625144/detection-of-poor-quality-artemisinin-based-combination-therapy-act-medicines-marketed-in-benin-using-simple-and-advanced-analytical-techniques
#5
Achille Yemoa, Védaste Habyalimana, Jérémie K Mbinze, Victoria Crickboom, Benjamin Muhigirwa, Agnès Ngoya, Pierre-Yves Sacré, Fernand Gbaguidi, Joëlle Quetin-Leclercq, Philippe Hubert, Roland D Marini
BACKGROUND: Poor quality antimalarial medicines still represent a threat to the public health, especially in Sub-Saharan Africa who bears a disproportionate share of the global burden of malaria. It is essential and urgent to strengthen mechanisms against counterfeit medicines. One of the approaches is regular market surveillance through quality controls. METHODS: 12 samples of artemether/lumefantrine were collected from formal and informal drug sellers in Cotonou (Benin) as well as additional other similar samples from Rwanda (13 samples) and from D...
June 15, 2017: Current Drug Safety
https://www.readbyqxmd.com/read/28615155/experiences-from-developing-and-upgrading-a-web-based-surveillance-system-for-malaria-elimination-in-cambodia
#6
Clementine Fu, Sérgio Lopes, Steve Mellor, Siddhi Aryal, Siv Sovannaroth, Arantxa Roca-Feltrer
Strengthening the surveillance component is key toward achieving country-wide malaria elimination in Cambodia. A Web-based upgraded malaria information system (MIS) was deemed to essentially act as the central component for surveillance strengthening. New functionality (eg, data visualization) and operational (eg, data quality) attributes of the system received particular attention. However, building from the lessons learned in previous systems' developments, other aspects unique to Cambodia were considered to be equally important; for instance, feasibility issues, particularly at the field level (eg, user acceptability at various health levels), and sustainability needs (eg, long-term system flexibility)...
June 14, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28615026/engaging-the-private-sector-in-malaria-surveillance-a-review-of-strategies-and-recommendations-for-elimination-settings
#7
Adam Bennett, Anton L V Avanceña, Jennifer Wegbreit, Chris Cotter, Kathryn Roberts, Roly Gosling
BACKGROUND: In malaria elimination settings, all malaria cases must be identified, documented and investigated. To facilitate complete and timely reporting of all malaria cases and effective case management and follow-up, engagement with private providers is essential, particularly in settings where the private sector is a major source of healthcare. However, research on the role and performance of the private sector in malaria diagnosis, case management and reporting in malaria elimination settings is limited...
June 14, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28612497/pharmacotherapy-follow-up-role-in-active-malaria-surveillance-in-a-travel-medicine-centre-outside-the-transmission-area-in-brazil
#8
R S Pedro, P Brasil, A Pina-Costa, C R Machado, L S Damasceno, C T Daniel-Ribeiro, L Guaraldo
WHAT IS KNOWN AND OBJECTIVE: Malaria is a potentially severe disease, widespread in tropical and subtropical areas. Apart from parasite drug resistance, which receives the largest share of attention, several factors directly influence the response to antimalarial treatment such as incorrect doses, adverse drug events, lack of adherence to treatment, drug quality and drug-drug interactions. Pharmacotherapy follow-up can be used to monitor and improve the effectiveness of treatment, prevent drug-related problems and ensure patient safety...
June 13, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28594879/molecular-surveillance-of-plasmodium-falciparum-resistance-to-artemisinin-based-combination-therapies-in-the-democratic-republic-of-congo
#9
Dieudonné Makaba Mvumbi, Thierry Lengu Bobanga, Jean-Marie Ntumba Kayembe, Georges Lelo Mvumbi, Hippolyte Nani-Tuma Situakibanza, Françoise Benoit-Vical, Pierrette Melin, Patrick De Mol, Marie-Pierre Hayette
Malaria is a major public health problem in the Democratic Republic of Congo. Despite progress achieved over the past decade in the fight against malaria, further efforts have to be done such as in the surveillance and the containment of Plasmodium falciparum resistant strains. We investigated resistance to artemisinin-based combination therapies currently in use in Democratic Republic of Congo by surveying molecular polymorphisms in three genes: pfcrt, pfmdr1 and pfk13 to explore possible emergence of amodiaquine, lumefantrine or artemisinin resistance in Democratic Republic of Congo...
2017: PloS One
https://www.readbyqxmd.com/read/28584181/facility-based-surveillance-for-emerging-infectious-diseases-diagnostic-practices-in-rural-west-african-hospital-settings-observations-from-ghana
#10
Freya L Jephcott, James L N Wood, Andrew A Cunningham
The aim of this study was to better understand the effectiveness of Integrated Disease Surveillance and Response (IDSR) facility-based surveillance in detecting newly emerging infectious diseases (EIDs) in rural West African settings. A six-month ethnographic study was undertaken in 2012 in the Techiman Municipality of the Brong-Ahafo Region of Ghana, aimed at documenting the trajectories of febrile illness cases of unknown origin occurring within four rural communities. Particular attention was paid to where these trajectories involved the use of formal healthcare facilities and the diagnostic practices that occurred there...
July 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28583119/surveillance-for-sulfadoxine-pyrimethamine-resistant-malaria-parasites-in-the-lake-and-southern-zones-tanzania-using-pooling-and-next-generation-sequencing
#11
Jeremiah M Ngondi, Deus S Ishengoma, Stephanie M Doctor, Kyaw L Thwai, Corinna Keeler, Sigsbert Mkude, Oresto M Munishi, Ritha A Willilo, Shabbir Lalji, Naomi Kaspar, Chonge Kitojo, Lynn A Paxton, Nicholas J Hathaway, Jeffrey A Bailey, Jonathan J Juliano, Steven R Meshnick, Julie Gutman
BACKGROUND: Malaria in pregnancy (MiP) remains a major public health challenge in areas of high malaria transmission. Intermittent preventive treatment in pregnancy (IPTp) with sulfadoxine-pyrimethamine (SP) is recommended to prevent the adverse consequences of MiP. The effectiveness of SP for IPTp may be reduced in areas where the dhps581 mutation (a key marker of high level SP resistance) is found; this mutation was previously reported to be common in the Tanga Region of northern Tanzania, but there are limited data from other areas...
June 5, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28582562/adaptation-of-a-malaria-surveillance-system-for-use-in-a-visceral-leishmaniasis-elimination-programme
#12
Geraldine M Foster, Sophie Dunkley, Rinki M Deb, Edward Thomsen, Marlize Coleman, A C Dhariwal, R K Das Gupta, Sridhar Srikantiah, Pradeep Das, Michael Coleman
Background: Successful public practice relies on generation and use of high-quality data. A data surveillance system (the Disease Data Management System [DDMS]) in use for malaria was adapted for use in the Indian visceral leishmaniasis elimination programme. Methods: A situational analysis identified the data flows in current use. Taxonomic trees for the vector of visceral leishmaniasis in India, Phlebotomus argentipes, were incorporated into the DDMS to allow entry of quality assurance and insecticide susceptibility data...
May 1, 2017: International Health
https://www.readbyqxmd.com/read/28580365/low-quality-housing-is-associated-with-increased-risk-of-malaria-infection-a-national-population-based-study-from-the-low-transmission-setting-of-swaziland
#13
Nomcebo Dlamini, Michelle S Hsiang, Nyasatu Ntshalintshali, Deepa Pindolia, Regan Allen, Nomcebo Nhlabathi, Joseph Novotny, Mi-Suk Kang Dufour, Alemayehu Midekisa, Roly Gosling, Arnaud LeMenach, Justin Cohen, Grant Dorsey, Bryan Greenhouse, Simon Kunene
BACKGROUND: Low-quality housing may confer risk of malaria infection, but evidence in low transmission settings is limited. METHODS: To examine the relationship between individual level housing quality and locally acquired infection in children and adults, a population-based cross-sectional analysis was performed using existing surveillance data from the low transmission setting of Swaziland. From 2012 to 2015, cases were identified through standard diagnostics in health facilities and by loop-mediated isothermal amplification in active surveillance, with uninfected subjects being household members and neighbors...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28579627/carriage-of-sub-microscopic-sexual-and-asexual-plasmodium-falciparum-stages-in-the-dry-season-at-navrongo-ghana
#14
Geoffrey R Atelu, Nancy O Duah, Michael D Wilson
BACKGROUND: We investigated the prevalence of sub-microscopic Plasmodium falciparum infections and gametocyte carriage in asymptomatic individuals in Navrongo in northern Ghana, an area of seasonal malaria transmission. DESIGN: A cross sectional study of 209 randomly selected participants of all age-groups was conducted in February and March, 2015. METHODS: Capillary blood samples collected from these individuals were used for the detection of both asexual and gametocyte stage parasites by microscopy, reverse transcriptase polymerase chain reaction (RT-PCR) and conventional nested PCR methods...
December 2016: Ghana Medical Journal
https://www.readbyqxmd.com/read/28572680/using-remote-sensing-environmental-data-to-forecast-malaria-incidence-at-a-rural-district-hospital-in-western-kenya
#15
Maquins Odhiambo Sewe, Yesim Tozan, Clas Ahlm, Joacim Rocklöv
Malaria surveillance data provide opportunity to develop forecasting models. Seasonal variability in environmental factors correlate with malaria transmission, thus the identification of transmission patterns is useful in developing prediction models. However, with changing seasonal transmission patterns, either due to interventions or shifting weather seasons, traditional modelling approaches may not yield adequate predictive skill. Two statistical models,a general additive model (GAM) and GAMBOOST model with boosted regression were contrasted by assessing their predictive accuracy in forecasting malaria admissions at lead times of one to three months...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28571572/assessment-of-climate-driven-variations-in-malaria-incidence-in-swaziland-toward-malaria-elimination
#16
Ting-Wu Chuang, Adam Soble, Nyasatu Ntshalintshali, Nomcebo Mkhonta, Eric Seyama, Steven Mthethwa, Deepa Pindolia, Simon Kunene
BACKGROUND: Swaziland aims to eliminate malaria by 2020. However, imported cases from neighbouring endemic countries continue to sustain local parasite reservoirs and initiate transmission. As certain weather and climatic conditions may trigger or intensify malaria outbreaks, identification of areas prone to these conditions may aid decision-makers in deploying targeted malaria interventions more effectively. METHODS: Malaria case-surveillance data for Swaziland were provided by Swaziland's National Malaria Control Programme...
June 1, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28569154/evaluation-of-the-knowledge-and-attitude-of-pharmacists-about-the-national-malaria-control-policy-in-southern-benin
#17
Habib Ganfon, Giraud Ekanmian, Louis Amoussou, Emilie Daniel-Garcia, Aurel Constant Allabi
BACKGROUND: The national strategy against malaria in an endemic country should involve all the health stakeholders. In Benin, the private sector is rarely present in the activities of the National Malaria Control Programme (NMCP), and its surveillance system does not cover private sector outlets that are a non-negligible part of the healthcare system. OBJECTIVE: The aim of this study was to describe the drug delivery practices within private pharmacies of Cotonou and Porto-Novo and the awareness of medicine providers concerning the national policy of malaria treatment...
May 31, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28558764/elimination-of-plasmodium-falciparum-malaria-in-tajikistan
#18
Anatoly V Kondrashin, Azizullo S Sharipov, Dilshod S Kadamov, Saifuddin S Karimov, Elkhan Gasimov, Alla M Baranova, Lola F Morozova, Ekaterina V Stepanova, Natalia A Turbabina, Maria S Maksimova, Evgeny N Morozov
Malaria was eliminated in Tajikistan by the beginning of the 1960s. However, sporadic introduced cases of malaria occurred subsequently probably as a result of transmission from infected mosquito Anopheles flying over river the Punj from the border areas of Afghanistan. During the 1970s and 1980s local outbreaks of malaria were reported in the southern districts bordering Afghanistan. The malaria situation dramatically changed during the 1990s following armed conflict and civil unrest in the newly independent Tajikistan, which paralyzed health services including the malaria control activities and a large-scale malaria epidemic occurred with more than 400,000 malaria cases...
May 30, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28558701/rapid-reduction-of-malaria-following-introduction-of-vector-control-interventions-in-tororo-district-uganda-a-descriptive-study
#19
David W Oguttu, Joseph K B Matovu, David C Okumu, Alex R Ario, Allen E Okullo, Jimmy Opigo, Victoria Nankabirwa
BACKGROUND: In 2012, Tororo District had the highest malaria burden in Uganda with community Plasmodium prevalence of 48%. To control malaria in the district, the Ministry of Health introduced universal distribution of long lasting insecticide-treated nets (LLINs) in 2013 and added indoor residual spraying (IRS) in 2014. This study assessed malaria incidence, test positivity rates and outpatient (OPD) attendance due to malaria before and after vector control interventions. METHODS: This study was based on analysis of Health Management Information System (HMIS) secondary malaria surveillance data of 2,727,850 patient records in OPD registers of 61 health facilities from 2012 to 2015...
May 30, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28546554/high-throughput-resistance-profiling-of-plasmodium-falciparum-infections-based-on-custom-dual-indexing-and-illumina-next-generation-sequencing-technology
#20
Sidsel Nag, Marlene D Dalgaard, Poul-Erik Kofoed, Johan Ursing, Marina Crespo, Lee O'Brien Andersen, Frank Møller Aarestrup, Ole Lund, Michael Alifrangis
Genetic polymorphisms in P. falciparum can be used to indicate the parasite's susceptibility to antimalarial drugs as well as its geographical origin. Both of these factors are key to monitoring development and spread of antimalarial drug resistance. In this study, we combine multiplex PCR, custom designed dual indexing and Miseq sequencing for high throughput SNP-profiling of 457 malaria infections from Guinea-Bissau, at the cost of 10 USD per sample. By amplifying and sequencing 15 genetic fragments, we cover 20 resistance-conferring SNPs occurring in pfcrt, pfmdr1, pfdhfr, pfdhps, as well as the entire length of pfK13, and the mitochondrial barcode for parasite origin...
May 25, 2017: Scientific Reports
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