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Malaria autochthonous

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https://www.readbyqxmd.com/read/29761766/factors-associated-with-the-rapid-and-durable-decline-in-malaria-incidence-in-el-salvador-1980-2017
#1
Robert A Burton, José Eduardo Romero Chévez, Mauricio Sauerbrey, Caterina Guinovart, Angela Hartley, Geoffrey Kirkwood, Matthew Boslego, Mirna Elizabeth Gavidia, Jaime Enrique Alemán Escobar, Rachel Turkel, Richard W Steketee, Laurence Slutsker, Kammerle Schneider, Carlos C Kent Campbell
A decade after the Global Malaria Eradication Program, El Salvador had the highest burden of malaria in Mesoamerica, with approximately 20% due to Plasmodium falciparum . A resurgence of malaria in the 1970s led El Salvador to alter its national malaria control strategy. By 1995, El Salvador recorded its last autochthonous P. falciparum case with fewer than 20 Plasmodium vivax cases annually since 2011. By contrast, its immediate neighbors continue to have the highest incidences of malaria in the region. We reviewed and evaluated the policies and interventions implemented by the Salvadoran National Malaria Program that likely contributed to this progress toward malaria elimination...
May 14, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29700629/an-analysis-of-the-influence-of-the-local-effects-of-climatic-and-hydrological-factors-affecting-new-malaria-cases-in-riverine-areas-along-the-rio-negro-and-surrounding-puraquequara-lake-amazonas-brazil
#2
Paulo Eduardo Guzzo Coutinho, Luiz Antonio Candido, Wanderli Pedro Tadei, Urbano Lopes da Silva Junior, Honorly Katia Mestre Correa
A study was conducted at three sampling regions along the Rio Negro and surrounding Puraquequara Lake, Amazonas, Brazil. The aim was to determine the influence of the local effects of climatic and hydrological variables on new malaria cases. Data was gathered on the river level, precipitation, air temperature, and the number of new cases of autochthonous malaria between January 2003 and December 2013. Monthly averages, time series decompositions, cross-correlations, and multiple regressions revealed different relationships at each location...
April 26, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29672709/surveillance-of-travel-associated-diseases-at-two-referral-centres-in-marseille-france-a-12-year-survey
#3
Karolina M Griffiths, Hélène Savini, Philippe Brouqui, Fabrice Simon, Philippe Parola, Philippe Gautret
Background: With increasing international travel and historically high numbers of residents visiting friends and relatives overseas, travel-associated illnesses are frequent in Marseille, France. We report the changing epidemiology of travel-related illnesses over a 12-year period. Methods: A single site GeoSentinel surveillance analysis was undertaken for 3460 ill returned travellers presenting to two public hospitals in Marseille, France from March 2003 to October 2015, with travel-related illnesses...
January 1, 2018: Journal of Travel Medicine
https://www.readbyqxmd.com/read/29506527/analysis-of-polymorphisms-in-the-circumsporozoite-protein-gene-of-plasmodium-vivax-isolates-from-henan-province-china
#4
Ying Liu, Rui-Min Zhou, Ya-Lan Zhang, Duo-Quan Wang, Su-Hua Li, Cheng-Yun Yang, Dan Qian, Yu-Ling Zhao, Hong-Wei Zhang, Bian-Li Xu
BACKGROUND: Plasmodium vivax malaria has historically been a major source of disease in Henan, China. In the 1970s, the morbidity of malaria was highest in the country. With support from the government and the efforts of healthcare personnel, the reported malaria cases have declined dramatically and a national elimination programme was launched in 2010. To achieve the goal, it is essential to study the diversity of autochthonous malaria and transmission of Plasmodium parasites, which will provide baseline data for disease control and management...
March 5, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29414182/laboratory-findings-in-zika-infection-the-experience-of-a-reference-centre-in-north-west-italy
#5
Elisa Burdino, Maria Grazia Milia, Tiziano Allice, Gabriella Gregori, Tina Ruggiero, Guido Calleri, Filippo Lipani, Anna Lucchini, Giulietta Venturi, Giovanni Di Perri, Valeria Ghisetti
BACKGROUND: Zika virus (ZIKV) remains a public health concern due to its association with fetal malformation and neurologic disease. OBJECTIVE: To report a reference centre experience on ZIKA virus (ZIKV) infection in travelers from epidemic countries from January 1 to September, 30, 2016 in Italy North-West (a geographic area covering 4.424 million inhabitants, corresponding to almost 73% of Italy North-West area). STUDY DESIGN: One hundred and twelve febrile travelers were studied to rule out a tropical fever [e...
April 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29378594/decreased-endemic-malaria-in-suriname-moving-towards-elimination
#6
Edward D van Eer, Gustavo Bretas, Hélène Hiwat
BACKGROUND: Suriname has moved from being the country with the highest annual parasite index in the Americas to one on the threshold of elimination. The progress toward elimination in the stable populations of Suriname between 2000 and 2015 is reviewed. METHODS: Data was obtained from the Medical Mission and the Ministry of Health Malaria Programme case-reporting systems, and analysed with a focus on disease burden and differentiation of the disease geographically, by malaria species, age, gender, ethnicity, incidence and gametocytaemia...
January 30, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29311638/an-assay-for-the-identification-of-plasmodium-simium-infection-for-diagnosis-of-zoonotic-malaria-in-the-brazilian-atlantic-forest
#7
Denise Anete Madureira de Alvarenga, Richard Culleton, Anielle de Pina-Costa, Danielle Fonseca Rodrigues, Cesare Bianco, Sidnei Silva, Ana Júlia Dutra Nunes, Julio César de Souza, Zelinda Maria Braga Hirano, Sílvia Bahadian Moreira, Alcides Pissinatti, Filipe Vieira Santos de Abreu, André Luiz Lisboa Areas, Ricardo Lourenço-de-Oliveira, Mariano Gustavo Zalis, Maria de Fátima Ferreira-da-Cruz, Patricia Brasil, Cláudio Tadeu Daniel-Ribeiro, Cristiana Ferreira Alves de Brito
Zoonotic malaria poses a unique problem for malaria control. Autochthonous cases of human malaria in the Atlantic Forest have recently been attributed to Plasmodium simium, a parasite that commonly infects non-human primates in this Brazilian biome. However, due to its close similarity at both the morphological and molecular level to Plasmodium vivax, the diagnosis of P. simium in this region remains problematic. Therefore, a diagnostic assay able to accurately identify P. simium is important for malaria surveillance...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29236924/ecological-characterisation-and-infection-of-anophelines-diptera-culicidae-of-the-atlantic-forest-in-the-southeast-of-brazil-over-a-10-year-period-has-the-behaviour-of-the-autochthonous-malaria-vector-changed
#8
Julyana Cerqueira Buery, Helder Ricas Rezende, Licia Natal, Leonardo Santana da Silva, Regiane Maria Tironi de Menezes, Blima Fux, Rosely Dos Santos Malafronte, Aloisio Falqueto, Crispim Cerutti Junior
BACKGROUND In southeastern Brazil, autochthonous cases of malaria can be found near Atlantic Forest fragments. Because the transmission cycle has not been completely clarified, the behaviour of the possible vectors in those regions must be observed. A study concerning the entomological aspects and natural infection of anophelines (Diptera: Culicidae) captured in the municipalities of the mountainous region of Espírito Santo state was performed in 2004 and 2005. Similarly, between 2014 and 2015, 12 monthly collections were performed at the same area of the study mentioned above...
February 2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29232457/imported-malaria-in-northern-italy-epidemiology-and-clinical-features-observed-over-18-years-in-the-teaching-hospital-of-brescia
#9
Paola Zanotti, Silvia Odolini, Lina Rachele Tomasoni, Cecilia Grecchi, Silvio Caligaris, Maurizio Gulletta, Alberto Matteelli, Veronica Cappa, Francesco Castelli
Background: Even though malaria incidence is decreasing worldwide, travel-related cases reported in Europe have remained stable in recent years. In Italy, incidence had increased in the 1990s, reaching a peak in 1999; a slow decline was then reported over the subsequent decade. To our knowledge, few published data are available on imported malaria in Italy since 2010. In this article we aimed to analyse trends in imported malaria in the teaching hospital of Brescia, northern Italy, over the last 18 years...
January 1, 2018: Journal of Travel Medicine
https://www.readbyqxmd.com/read/29211239/urban-malaria-transmission-in-a-non-endemic-area-in-the-andean-region-of-colombia
#10
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/29175392/genetic-ancestry-effects-on-the-distribution-of-toll-like-receptors-tlrs-gene-polymorphisms-in-a-population-of-the-atlantic-forest-s%C3%A3-o-paulo-brazil
#11
Lilian O Guimarães, Miklos Maximiliano Bajay, Eliana F Monteiro, Gerhard Wunderlich, Sidney E Santos, Karin Kirchgatter
The innate immune system governed by toll-like receptors (TLRs) provides the first line of defense against pathogens. Surface-localized TLR1 and TLR6 are known to detect parasite components. TLR encoding genes were shown to display signatures of recent positive selection in Europeans and might be involved in local adaptation at immune-related genes. To verify the influence of Brazilian population admixture on the distribution of polymorphisms in TLRs, we analyzed the genotype frequencies of 24 polymorphisms distributed across five TLR genes in a Southeastern Brazilian population where autochthonous cases of malaria occur in small foci of transmission...
February 2018: Human Immunology
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/29145859/singapore-s-anopheles-sinensis-form-a-is-susceptible-to-plasmodium-vivax-isolates-from-the-western-thailand-myanmar-border
#13
Sook-Cheng Pang, Chiara Andolina, Benoit Malleret, Peter R Christensen, Sai-Gek Lam-Phua, Muhammad Aliff Bin Abdul Razak, Chee-Seng Chong, Daiqin Li, Cindy S Chu, Bruce Russell, Laurent Rénia, Lee-Ching Ng, Francois Nosten
BACKGROUND: Singapore has been certified malaria-free by the World Health Organization since November 1982. However, sporadic autochthonous malaria outbreaks do occur. In one of the most recent outbreaks of vivax malaria, an entomological investigation identified Anopheles sinensis as the most probable vector. As metaphase karyotype studies divided An. sinensis into two forms, A and B, with different vector competence: the investigation of vector competence of An. sinensis found in Singapore was thus pursued using Plasmodium vivax field isolates from the Thailand-Myanmar border...
November 16, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28903890/human-parasitic-diseases-in-bulgaria-in-between-2013-2014
#14
Iskra Rainova, Rumen Harizanov, Iskren Kaftandjiev, Nina Tsvetkova, Ognyan Mikov, Eleonora Kaneva
BACKGROUND: In Bulgaria, more than 20 autochthonous human parasitic infections have been described and some of them are widespread. Over 50 imported protozoan and helminthic infections represent diagnostic and therapeutic challenges and pose epidemiological risks due to the possibility of local transmission. AIMS: To establish the distribution of autochthonous and imported parasitic diseases among the population of the country over a 2-year period (2013-2014) and to evaluate their significance in the public health system...
January 20, 2018: Balkan Medical Journal
https://www.readbyqxmd.com/read/28867401/outbreak-of-human-malaria-caused-by-plasmodium-simium-in-the-atlantic-forest-in-rio-de-janeiro-a-molecular-epidemiological-investigation
#15
Patrícia Brasil, Mariano Gustavo Zalis, Anielle de Pina-Costa, Andre Machado Siqueira, Cesare Bianco Júnior, Sidnei Silva, André Luiz Lisboa Areas, Marcelo Pelajo-Machado, Denise Anete Madureira de Alvarenga, Ana Carolina Faria da Silva Santelli, Hermano Gomes Albuquerque, Pedro Cravo, Filipe Vieira Santos de Abreu, Cassio Leonel Peterka, Graziela Maria Zanini, Martha Cecilia Suárez Mutis, Alcides Pissinatti, Ricardo Lourenço-de-Oliveira, Cristiana Ferreira Alves de Brito, Maria de Fátima Ferreira-da-Cruz, Richard Culleton, Cláudio Tadeu Daniel-Ribeiro
BACKGROUND: Malaria was eliminated from southern and southeastern Brazil over 50 years ago. However, an increasing number of autochthonous episodes attributed to Plasmodium vivax have recently been reported from the Atlantic Forest region of Rio de Janeiro state. As the P vivax-like non-human primate malaria parasite species Plasmodium simium is locally enzootic, we performed a molecular epidemiological investigation to determine whether zoonotic malaria transmission is occurring. METHODS: We examined blood samples from patients presenting with signs or symptoms suggestive of malaria as well as from local howler monkeys by microscopy and PCR...
October 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28662650/non-imported-malaria-in-non-endemic-countries-a-review-of-cases-in-spain
#16
Emilia Velasco, Diana Gomez-Barroso, Carmen Varela, Oliva Diaz, Rosa Cano
Spain declared the elimination of malaria in 1964. In non-endemic areas, the overwhelming majority of malaria cases are acquired abroad, and locally acquired infections are rare events. In Spain, malaria is a statutorily notifiable disease. During these fifty years more than ten thousand malaria cases have been reported, and about 0.8% of them did not have a history of recent travel. In this report, it was carried out a review of the ways in which malaria can be transmitted in non-endemic areas and a short description of the Spanish cases, aggregated by their transmission mechanisms...
June 29, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28615868/some-probable-factors-affecting-the-malaria-situation-before-and-at-the-beginning-of-a-pre-elimination-program-in-southeastern-iran
#17
Jalil Nejati, Seyed Mehdi Tabatabaei, Masoud Salehi, Abedin Saghafipour, Ehssan Mozafari
The area southeast of Iran still copes with malaria as an unstable infectious disease and includes the most autochthonous malaria reports in the country. This comprehensive study was carried out for the evaluation of environmental factors, welfare indicators and health facilities on the malaria situation before and at the beginning of a pre-elimination programme in this area. The probable factors affecting the malaria situation, including the water-pipe network, electricity, rainfall, long-lasting integrated nets (LLINs), indoor residual spraying and malaria diagnosis-treatment centres were analysed using SPSS software...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28426114/infectious-diseases-and-migrant-worker-health-in-singapore-a-receiving-country-s-perspective
#18
REVIEW
Sapna P Sadarangani, Poh Lian Lim, Shawn Vasoo
Background: Approximately 1.4 million migrant workers reside in Singapore, presenting unique infectious disease challenges to both migrants and Singapore. Methods: A Pubmed, MEDLINE (Ovid), EBSCO Host (Global Health) and Google Scholar search was performed for both peer, non-peer reviewed articles and reports relevant to migrant health in Singapore, published between 1 January 1989 and 1 September 2016. Additional studies were identified from citations within searched articles...
July 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28222159/the-role-of-spatial-mobility-in-malaria-transmission-in-the-brazilian-amazon-the-case-of-porto-velho-municipality-rond%C3%A3-nia-brazil-2010-2012
#19
COMPARATIVE STUDY
Jussara Rafael Angelo, Tony Hiroshi Katsuragawa, Paulo Chagastelles Sabroza, Lino Augusto Sander de Carvalho, Luiz Hildebrando Pereira da Silva, Carlos Afonso Nobre
BACKGROUND: This study aims to describe the role of mobility in malaria transmission by discussing recent changes in population movements in the Brazilian Amazon and developing a flow map of disease transmission in this region. METHODOLOGY/PRINCIPAL FINDINGS: This study presents a descriptive analysis using an ecological approach on regional and local scales. The study location was the municipality of Porto Velho, which is the capital of Rondônia state, Brazil...
2017: PloS One
https://www.readbyqxmd.com/read/28187764/new-potential-plasmodium-brasilianum-hosts-tamarin-and-marmoset-monkeys-family-callitrichidae
#20
Denise A M Alvarenga, Anielle Pina-Costa, Cesare Bianco, Silvia B Moreira, Patricia Brasil, Alcides Pissinatti, Claudio T Daniel-Ribeiro, Cristiana F A Brito
BACKGROUND: Non-human primates (NHPs) as a source for Plasmodium infections in humans are a challenge for malaria elimination. In Brazil, two species of Plasmodium have been described infecting NHPs, Plasmodium brasilianum and Plasmodium simium. Both species are infective to man. Plasmodium brasilianum resembles morphologically, genetically and immunologically the human quartan Plasmodium malariae. Plasmodium brasilianum naturally infects species of non-human primates from all New World monkey families from a large geographic area...
February 10, 2017: Malaria Journal
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