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Malaria surveillance

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https://www.readbyqxmd.com/read/29225124/time-delays-in-the-diagnosis-and-treatment-of-malaria-in-non-endemic-countries-a-systematic-review
#1
REVIEW
Hamad Bastaki, Jessica Carter, Louise Marston, Jackie Cassell, Greta Rait
BACKGROUND: Delays in diagnosis and treatment for malaria are associated with an increased risk for severe disease and mortality. Identifying the extent of patient and health system delay can provide a benchmark against which interventions to reduce delays can be measured. METHODS: We performed an electronic search in PubMed, EMBASE, Web of Science and LILACS for studies reporting time to diagnosis and treatment after return from travel, onset of symptoms and seeking healthcare in non-endemic countries...
December 7, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29219091/potential-impact-of-climate-change-on-emerging-vector-borne-and-other-infections-in-the-uk
#2
Matthew Baylis
Climate is one of several causes of disease emergence. Although half or more of infectious diseases are affected by climate it appears to be a relatively infrequent cause of human disease emergence. Climate mostly affects diseases caused by pathogens that spend part of their lifecycle outside of the host, exposed to the environment. The most important routes of transmission of climate sensitive diseases are by arthropod (insect and tick) vectors, in water and in food. Given the sensitivity of many diseases to climate, it is very likely that at least some will respond to future climate change...
December 5, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/29211239/urban-malaria-transmission-in-a-non-endemic-area-in-the-andean-region-of-colombia
#3
Pablo E Chaparro, Karen Molina, Alberto Alzate, Julio Padilla, Myriam Arévalo-Herrera, Sócrates Herrera
BACKGROUND: Rapid urbanisation in difficult socio-economic conditions such as inadequate housing infrastructure, lack of public services, improper sanitation, and poor water drainage systems in vegetation-rich areas lead to ecological conditions that are conducive to the breeding of mosquitoes and transmission of malaria, in semi-urban and urban settings. OBJECTIVES: This study aimed to describe the cases of malaria that were reported in the peri-urban areas of Pereira (Colombia), between 2008 and 2015...
December 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29202107/a-multi-level-spatial-analysis-of-clinical-malaria-and-subclinical-plasmodium-infections-in-pailin-province-cambodia
#4
Daniel M Parker, Rupam Tripura, Thomas J Peto, Richard J Maude, Chea Nguon, Jeremy Chalk, Pasathorn Sirithiranont, Mallika Imwong, Lorenz von Seidlein, Nicholas J White, Arjen M Dondorp
Background: The malaria burden is decreasing throughout the Greater Mekong Subregion, however transmission persists in some areas. Human movement, subclinical infections and complicated transmission patterns contribute to the persistence of malaria. This research describes the micro-geographical epidemiology of both clinical malaria and subclinical Plasmodium infections in three villages in Western Cambodia. Methods: Three villages in Western Cambodia were selected for the study based on high reported Plasmodium falciparum incidence...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29190295/malera-an-updated-research-agenda-for-combination-interventions-and-modelling-in-malaria-elimination-and-eradication
#5
(no author information available yet)
This paper summarises key advances and priorities since the 2011 presentation of the Malaria Eradication Research Agenda (malERA), with a focus on the combinations of intervention tools and strategies for elimination and their evaluation using modelling approaches. With an increasing number of countries embarking on malaria elimination programmes, national and local decisions to select combinations of tools and deployment strategies directed at malaria elimination must address rapidly changing transmission patterns across diverse geographic areas...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29190281/internet-based-biosurveillance-methods-for-vector-borne-diseases-are-they-novel-public-health-tools-or-just-novelties
#6
REVIEW
Simon Pollett, Benjamin M Althouse, Brett Forshey, George W Rutherford, Richard G Jarman
Internet-based surveillance methods for vector-borne diseases (VBDs) using "big data" sources such as Google, Twitter, and internet newswire scraping have recently been developed, yet reviews on such "digital disease detection" methods have focused on respiratory pathogens, particularly in high-income regions. Here, we present a narrative review of the literature that has examined the performance of internet-based biosurveillance for diseases caused by vector-borne viruses, parasites, and other pathogens, including Zika, dengue, other arthropod-borne viruses, malaria, leishmaniasis, and Lyme disease across a range of settings, including low- and middle-income countries...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29187975/evolutionary-structure-of-plasmodium-falciparum-major-variant-surface-antigen-genes-in-south-america-implications-for-epidemic-transmission-and-surveillance
#7
Virginie Rougeron, Kathryn E Tiedje, Donald S Chen, Thomas S Rask, Dionicia Gamboa, Amanda Maestre, Lise Musset, Eric Legrand, Oscar Noya, Erhan Yalcindag, François Renaud, Franck Prugnolle, Karen P Day
Strong founder effects resulting from human migration out of Africa have led to geographic variation in single nucleotide polymorphisms (SNPs) and microsatellites (MS) of the malaria parasite, Plasmodium falciparum. This is particularly striking in South America where two major founder populations of P. falciparum have been identified that are presumed to have arisen from the transatlantic slave trade. Given the importance of the major variant surface antigen of the blood stages of P. falciparum as both a virulence factor and target of immunity, we decided to investigate the population genetics of the genes encoding "Plasmodium falciparum Erythrocyte Membrane Protein 1" (Pf EMP1) among several countries in South America, in order to evaluate the transmission patterns of malaria in this continent...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29187150/identification-of-pathogens-for-differential-diagnosis-of-fever-with-jaundice-in-the-central-african-republic-a-retrospective-assessment-2008-2010
#8
Christelle Luce Bobossi Gadia, Alexandre Manirakiza, Gaspard Tekpa, Xavier Konamna, Ulrich Vickos, Emmanuel Nakoune
BACKGROUND: Febrile jaundice results clinically in generalized yellow coloration of the teguments and mucous membranes due to excess plasma bilirubin, accompanied by fever. Two types are found: conjugated and unconjugated bilirubin jaundice. Jaundice is a sign in several diseases due to viruses (viral hepatitis and arbovirus), parasites (malaria) and bacteria (leptospirosis). In the Central African Republic (CAR), only yellow fever is included on the list of diseases for surveillance...
November 29, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29183370/towards-malaria-elimination-in-savannakhet-lao-pdr-mathematical-modelling-driven-strategy-design
#9
Sai Thein Than Tun, Lorenz von Seidlein, Tiengkham Pongvongsa, Mayfong Mayxay, Sompob Saralamba, Shwe Sin Kyaw, Phetsavanh Chanthavilay, Olivier Celhay, Tran Dang Nguyen, Thu Nguyen-Anh Tran, Daniel M Parker, Maciej F Boni, Arjen M Dondorp, Lisa J White
BACKGROUND: The number of Plasmodium falciparum malaria cases around the world has decreased substantially over the last 15 years, but with the spread of resistance against anti-malarial drugs and insecticides, this decline may not continue. There is an urgent need to consider alternative, accelerated strategies to eliminate malaria in countries like Lao PDR, where there are a few remaining endemic areas. A deterministic compartmental modelling tool was used to develop an integrated strategy for P...
November 28, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29181956/infectious-diseases-in-poland-in-2015
#10
Małgorzata Sadkowska-Todys, Andrzej Zieliński, Mirosław P. Czarkowski
PURPOSE OF THE STUDY: This is the next annual analysis of the situation of infectious and parasitic diseases in Poland in 2015 within the framework of the Epidemiological Chronicle of Przegląd Epidemiologiczny - Epidemiological Review. Its purpose is to identify potential threats to the health of populations from infectious diseases occurring in Poland with reference to other parts of the globe. MATERIAL AND METHODS: This paper is an introduction to more detailed studies of the epidemiological situation of selected infectious diseases and summarizes the results of the surveillance of infectious diseases in Poland in 2015...
2017: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/29178921/plasmodium-falciparum-kelch-13-mutations-and-treatment-response-in-patients-in-hpa-pun-district-northern-kayin-state-myanmar
#11
Craig A Bonnington, Aung Pyae Phyo, Elizabeth A Ashley, Mallika Imwong, Kanlaya Sriprawat, Daniel M Parker, Stephane Proux, Nicholas J White, Francois Nosten
BACKGROUND: Artemisinin resistance, linked to polymorphisms in the Kelch gene on chromosome 13 of Plasmodium falciparum (k13), has outpaced containment efforts in South East Asia. For national malaria control programmes in the region, it is important to establish a surveillance system which includes monitoring for k13 polymorphisms associated with the clinical phenotype. METHODS: Between February and December 2013, parasite clearance was assessed in 35 patients with uncomplicated P...
November 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29166907/quantifying-seasonal-and-diel-variation-in-anopheline-and-culex-human-biting-rates-in-southern-ecuador
#12
Sadie J Ryan, Catherine A Lippi, Philipp H Boersch-Supan, Naveed Heydari, Mercy Silva, Jefferson Adrian, Leonardo F Noblecilla, Efraín B Ayala, Mayling D Encalada, David A Larsen, Jesse T Krisher, Lyndsay Krisher, Lauren Fregosi, Anna M Stewart-Ibarra
BACKGROUND: Quantifying mosquito biting rates for specific locations enables estimation of mosquito-borne disease risk, and can inform intervention efforts. Measuring biting itself is fraught with ethical concerns, so the landing rate of mosquitoes on humans is often used as a proxy measure. Southern coastal Ecuador was historically endemic for malaria (Plasmodium falciparum and Plasmodium vivax), although successful control efforts in the 2000s eliminated autochthonous transmission (since 2011)...
November 22, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29164092/the-nuisance-mosquito-anopheles-plumbeus-stephens-1828-in-germany-a-questionnaire-survey-may-help-support-surveillance-and-control
#13
Eva C Heym, Jette Schröder, Helge Kampen, Doreen Walther
The mosquito species Anopheles plumbeus is an aggressive biter and a potential vector of malaria parasites and West Nile virus. It occurs naturally at low population densities, as its larval development is adapted to the specific water qualities found in tree holes. However, probably owing to environmental changes, it has recently been observed in several European countries to use increasingly often artificial breeding habitats that may lead to mass development and severe annoyance to humans living close by...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/29162062/rural-households-at-risk-of-malaria-did-not-own-sufficient-insecticide-treated-nets-at-dabat-hdss-site-evidence-from-a-cross-sectional-re-census
#14
Kindie Fentahun Muchie, Kassahun Alemu, Amare Tariku, Adino Tesfahun Tsegaye, Solomon Mekonnen Abebe, Mezgebu Yitayal, Tadesse Awoke, Gashaw Andargie Biks
BACKGROUND: Malaria is the leading cause of disease burden across the world, especially in African countries. Ethiopia has designed a five year (2011-2015) plan to cover 100% of the households in malarious areas with one insecticide treated net (ITN) for every two persons, and to raise consistent ITN utilization to at least 80%. However, evidence on ownership of ITN among malarious rural households in northwest Ethiopia is quite limited. Hence, the present study aimed at assessing ownership of ITN and associated factors among rural households at risk of malaria at Dabat Health and Demographic Surveillance System site, northwest Ethiopia...
November 21, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29161492/bionomics-of-anopheles-nyssorhynchus-albimanus-diptera-culicidae-in-two-villages-of-the-way%C3%A3%C2%BAu-people-riohacha-la-guajira-colombia
#15
Airleth Sofía Díaz, Aura Isabel Sotelo, Catalina González-Uribe, Helena L Brochero
INTRODUCTION: Riohacha, capital of the department of La Guajira, reports the highest rates for malaria in the department, and the most vulnerable people are those of the Wayúu indigenous group. OBJECTIVE: To describe some aspects of the bionomics of the Anopheles species in two Wayúu settlements. MATERIALS AND METHODS: Two sampling events were carried out during dry and rainy seasons in Marbacella and El Horno (Riohacha, La Guajira). Immature stages of Anopheles spp...
March 29, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29155658/building-global-epidemiology-and-response-capacity-with-field-epidemiology-training-programs
#16
Donna S Jones, Richard C Dicker, Robert E Fontaine, Amy L Boore, Jared O Omolo, Rana J Ashgar, Henry C Baggett
More than ever, competent field epidemiologists are needed worldwide. As known, new, and resurgent communicable diseases increase their global impact, the International Health Regulations and the Global Health Security Agenda call for sufficient field epidemiologic capacity in every country to rapidly detect, respond to, and contain public health emergencies, thereby ensuring global health security. To build this capacity, for >35 years the US Centers for Disease Control and Prevention has worked with countries around the globe to develop Field Epidemiology Training Programs (FETPs)...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29141762/efficacy-of-artemether-lumefantrine-for-uncomplicated-plasmodium-falciparum-malaria-in-cruzeiro-do-sul-brazil-2016
#17
Megumi Itoh, Suiane Negreiros do Valle, Sâmela Farias, Thayna Maria Holanda de Souza, Giselle Maria Rachid Viana, Naomi Lucchi, Stella Chenet, Paola Marchesini, Marinete Póvoa, Ana Carolina Faria E Silva Santelli, Alexandre Macedo de Oliveira
We evaluated the therapeutic efficacy of artemether-lumefantrine (AL) fixed-dose combination to treat uncomplicated Plasmodium falciparum malaria in Cruzeiro do Sul, Acre State, in the Amazon region of Brazil. Between December 2015 and May 2016, we enrolled 79 patients, 5-79 years old with fever or history of fever in the previous 48 hours and P. falciparum monoinfection confirmed by microscopy. Attempts were made to provide direct observation or phone reminders for all six doses of AL, and patients were followed-up for 28 days...
November 6, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141606/trends-in-bednet-ownership-and-usage-and-the-effect-of-bednets-on-malaria-hospitalization-in-the-kilifi-health-and-demographic-surveillance-system-khdss-2008-2015
#18
Alice Kamau, Victoria Nyaga, Evasius Bauni, Benjamin Tsofa, Abdisalan M Noor, Philip Bejon, J Anthony G Scott, Laura L Hammitt
BACKGROUND: Use of bednets reduces malaria morbidity and mortality. In Kilifi, Kenya, there was a mass distribution of free nets to children < 5 years in 2006. In 2009, a new policy was implemented to offer bednets to pregnant women and children < 5 years free of charge. Nets were again distributed to children and adults through national mass campaigns in 2012 and 2015. We aimed to evaluate trends in bednet ownership and usage, and the effect of bednets on the incidence of malaria hospitalization in children < 5 years within the Kilifi Health and Demographic Surveillance System (KHDSS)...
November 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29141337/-epidemiology-of-imported-infectious-diseases-in-china-2013-2016
#19
Y L Wang, X Wang, R Q Ren, L Zhou, W W Tu, D X Ni, Q Li, Z J Feng, Y P Zhang
Objective: To describe the epidemic of imported infectious diseases in China between 2013 and 2016, including the kinds of infectious diseases, affected provinces, source countries and the epidemiological characteristics, and provide scientific information for the prevention and control of imported infectious diseases. Methods: Data of cases of imported infectious diseases in China from 2013 to 2016 were collected from national information reporting system of infectious diseases, Microsoft Excel 2010 and SPSS 18...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29140232/country-wide-surveillance-of-molecular-markers-of-antimalarial-drug-resistance-in-senegal-by-use-of-positive-malaria-rapid-diagnostic-tests
#20
MULTICENTER STUDY
Magatte Ndiaye, Doudou Sow, Sidsel Nag, Khadime Sylla, Roger Clement Tine, Jean Louis Ndiaye, Aminata Collé Lo, Oumar Gaye, Babacar Faye, Michael Alifrangis
In Senegal, antimalarial drugs used in treatment and prevention of malaria are one of the main reasons for the current success in controlling malaria. However, the successful control of malaria is highly dependent on continued effectiveness of these drugs which may be compromised by the spread of drug resistance. Therefore, surveillance of drug resistance in the malaria parasites is essential. The objective of this pilot study was to test the feasibility of routinely sampled malaria rapid diagnostic tests (RDTs) at a national scale to assess the temporal changes in the molecular profiles of antimalarial drug resistance markers of Plasmodium falciparum parasites...
November 2017: American Journal of Tropical Medicine and Hygiene
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