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https://www.readbyqxmd.com/read/29153070/-the-importance-of-the-contribution-of-rapid-test-serological-and-molecular-methods-in-the-diagnosis-of-two-imported-malaria-cases-with-atypical-microscopy
#1
Orçun Zorbozan, Hüsnü Pullukçu, Esra Atalay Şahar, Muhammet Karakavuk, Hüseyin Can, Varol Tunali, Mert Döşkaya, Nevin Turgay, Seray Töz, Ahmet Özbilgin
Malaria is a widespread and life-threatening disease in tropical and subtropical regions. In patients with typical clinical symptoms, malaria is considered as a preliminary diagnosis if there is a travel history to malaria-endemic areas. The basis of the laboratory diagnosis of malaria is the microscopic examination of Giemsa stained smears. On the other hand, the diagnosis and differentiation of Plasmodium species with microscopic examination may have some difficulties. In the first case, adifferent appearance from the classical Plasmodium vivax erythrocytic forms in infected erythrocytes were detected in 1% of all erythrocytes in thin smear blood preparations of a 26-year-old male with complaints of fever and chills and a story of travel to Nigeria...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29143441/cellular-aging-dynamics-after-acute-malaria-infection-a-12-month-longitudinal-study
#2
Muhammad Asghar, Victor Yman, Manijeh Vafa Homann, Klara Sondén, Ulf Hammar, Dennis Hasselquist, Anna Färnert
Accelerated cellular aging and reduced lifespan have recently been shown in birds chronically infected with malaria parasites. Whether malaria infection also affects cellular aging in humans has not been reported. Here, we assessed the effect of a single acute Plasmodium falciparum malaria infection on cellular aging dynamics in travelers prospectively followed over one year in Sweden. DNA and RNA were extracted from venous blood collected at the time of admission and repeatedly up to one year. Telomere length was measured using real-time quantitative PCR, while telomerase activity and CDKN2A expression were measured by reverse transcriptase (RT)-qPCR...
November 16, 2017: Aging Cell
https://www.readbyqxmd.com/read/29141337/-epidemiology-of-imported-infectious-diseases-in-china-2013-2016
#3
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/29140229/epidemiology-of-imported-malaria-cases-in-japan-2006-2014-a-sentinel-traveler-surveillance-approach
#4
Atsuhiro Kanayama, Yuzo Arima, Tamano Matsui, Koki Kaku, Hitomi Kinoshita, Kazunori Oishi
Malaria continues to be imported into Japan. To better assess the risk of imported malaria, we describe malaria species, suspected country/area of infection (accounting for the number of travelers), demographic characteristics, clinical manifestation, and healthcare access, based on the national surveillance data from 2006 to 2014. Among 557 cases, the median age was 33 years (range: 1-83 years), and 76% were male; 306 (55%) were classified as Japanese based on the reported name. The majority were Plasmodium falciparum infections (58%), followed by Plasmodium vivax infections (30%)...
November 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29132978/intensive-care-in-severe-malaria-report-from-the-task-force-on-tropical-diseases-by-the-world-federation-of-societies-of-intensive-and-critical-care-medicine
#5
REVIEW
Dilip R Karnad, Mohd Basri Mat Nor, Guy A Richards, Tim Baker, Pravin Amin
Severe malaria is common in tropical countries in Africa, Asia, Oceania and South and Central America. It may also occur in travelers returning from endemic areas. Plasmodium falciparum accounts for most cases, although P vivax is increasingly found to cause severe malaria in Asia. Cerebral malaria is common in children in Africa, manifests as coma and seizures, and has a high morbidity and mortality. In other regions, adults may also develop cerebral malaria but neurological sequelae in survivors are rare...
November 8, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29127021/severe-delayed-haemolytic-anaemia-associated-with-artemether-lumefantrine-treatment-of-malaria-in-a-japanese-traveller
#6
Chihiro Hasegawa, Masaharu Kudo, Haruhiko Maruyama, Mikio Kimura
Delayed haemolytic anaemia has been reported in association with intravenous artesunate treatment in patients with severe Plasmodium falciparum malaria, and furthermore, oral artemisinin-based combination therapies including artemether-lumefantrine (AL) have also been incriminated. However, definite cases of delayed haemolytic anaemia associated with AL appear to be scarce, as reported cases were often treated concomitantly with other anti-malarials. In this study, we report a severe case of delayed haemolytic anaemia following AL alone in a Japanese traveller with severe parasitaemia caused by numerous P...
November 7, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29115370/-febrile-syndromes-in-the-traveler-returning-from-tropical-regions-admitted-in-a-monographic-unit
#7
N Moya Notario, M Hernández-Cabrera, C Carranza-Rodríguez, E Pisos-Álamo, N Jaén-Sánchez, J L Pérez-Arellano
OBJECTIVE: The aim was to analyse those syndromes with fever in travellers who return from tropical regions evaluated at our Department of Infectology and Tropical Medicine. Clarifying these conditions intends to reach earlier diagnoses and, perhaps, to avoid the emergence and spread of imported diseases, as well as to establish appropriate preventive measures. METHODS: An observational descriptive transversal study was performed, selecting those patients who returned from tropical regions with fever, amongst all travellers evaluated in our department between 1998 and 2013...
November 8, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29112671/travel-characteristics-and-pretravel-health-care-among-pregnant-or-breastfeeding-u-s-women-preparing-for-international-travel
#8
Stefan H F Hagmann, Sowmya R Rao, Regina C LaRocque, Stefanie Erskine, Emily S Jentes, Allison T Walker, Elizabeth D Barnett, Lin H Chen, Davidson H Hamer, Edward T Ryan
OBJECTIVE: To study characteristics and preventive interventions of adult pregnant and breastfeeding travelers seeking pretravel health care in the United States. METHODS: This cross-sectional study analyzed data (2009-2014) of pregnant and breastfeeding travelers seen at U.S. travel clinics participating in Global TravEpiNet. Nonpregnant, nonbreastfeeding adult female travelers of childbearing age were used for comparison. We evaluated the prescription of malaria chemoprophylaxis and antibiotics for this population as well as the administration of three travel-related vaccines: hepatitis A, typhoid, and yellow fever...
November 3, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29107173/deaths-and-parasuicides-associated-with-mefloquine-chemoprophylaxis-a-systematic-review
#9
REVIEW
Maya Tickell-Painter, Rachel Saunders, Nicola Maayan, Vittoria Lutje, Alberto Mateo-Urdiales, Paul Garner
BACKGROUND: Mefloquine is recommended in international health guidelines for preventing malaria in travellers. Reports of psychosis and suicide are often alluded to but are not clearly established. METHODS: We carried out a systematic review to identify and critically appraise any death or parasuicide associated with mefloquine prophylaxis. We developed a comprehensive search that included publications up to 11 July 2017. We included case studies but excluded newspaper reports...
October 25, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29095834/residual-malaria-transmission-dynamics-varies-across-the-gambia-despite-high-coverage-of-control-interventions
#10
Julia Mwesigwa, Jane Achan, Gian Luca Di Tanna, Muna Affara, Musa Jawara, Archibald Worwui, Majidah Hamid-Adiamoh, Fatoumatta Kanuteh, Sainey Ceesay, Teun Bousema, Chris Drakeley, Koen Peeters Grietens, Steve W Lindsay, Jean-Pierre Van Geertruyden, Umberto D'Alessandro
Over the last decades, malaria has declined substantially in The Gambia but its transmission has not been interrupted. In order to better target control interventions, it is essential to understand the dynamics of residual transmission. This prospective cohort study was conducted between June 2013 and April 2014 in six pairs of villages across The Gambia. Blood samples were collected monthly during the transmission season (June-December) from all residents aged ≥6 months (4,194 individuals) and then in April (dry season)...
2017: PloS One
https://www.readbyqxmd.com/read/29083100/mefloquine-for-preventing-malaria-during-travel-to-endemic-areas
#11
REVIEW
Maya Tickell-Painter, Nicola Maayan, Rachel Saunders, Cheryl Pace, David Sinclair
BACKGROUND: Mefloquine is one of four antimalarial agents commonly recommended for preventing malaria in travellers to malaria-endemic areas. Despite its high efficacy, there is controversy about its psychological side effects. OBJECTIVES: To summarize the efficacy and safety of mefloquine used as prophylaxis for malaria in travellers. SEARCH METHODS: We searched the Cochrane Infectious Diseases Group Specialized Register; the Cochrane Central Register of Controlled Trials (CENTRAL), published on the Cochrane Library; MEDLINE; Embase (OVID); TOXLINE (https://toxnet...
October 30, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29080559/self-diagnosis-of-malaria-by-travellers-a-cohort-study-on-the-use-of-malaria-rapid-diagnostic-tests-provided-by-a-swiss-travel-clinic
#12
Delphine Berthod, Jacynthe Rochat, Rachel Voumard, Laurence Rochat, Blaise Genton, Valérie D'Acremont
BACKGROUND: The WHO recommends that all suspect malaria cases be tested before receiving treatment. Rapid diagnostic tests (RDT) for malaria can be performed reliably by community health workers with no formal medical background and thus, RDTs could also be provided to travellers for self-diagnosis during visits to endemic regions. METHODS: RDTs were proposed during pre-travel consultations to pre-defined categories of travellers. A training run on their own blood was performed and, if carried out correctly, the traveller was given a written procedure on how to perform the test and act on its result...
October 28, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29066404/one-sixth-of-inpatients-in-a-danish-infectious-disease-ward-have-imported-diseases-a-cross-sectional-analysis
#13
F Dam Larsen, S Jespersen, C Wejse, E Petersen, C S Larsen
BACKGROUND: The aim of the study was to describe travel demographics and disease patterns of patients hospitalized with travel-related diseases, and assess risk factors to improve pre-travel information and post-travel diagnostics and treatment. METHODS: The study included all patients hospitalized with travel-related diseases in 2015 at a Danish infectious diseases ward. Patient data was extracted from the in-patient hospital registry. was analyzed regarding diagnoses, destination, purpose of travel and pre-travel information...
October 21, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29065910/very-high-carriage-of-gametocytes-in-asymptomatic-low-density-plasmodium-falciparum-and-p-vivax-infections-in-western-thailand
#14
Wang Nguitragool, Ivo Mueller, Chalermpon Kumpitak, Teerawat Saeseu, Sirasate Bantuchai, Ritthideach Yorsaeng, Surapon Yimsamran, Wanchai Maneeboonyang, Patiwat Sa-Angchai, Wutthichai Chaimungkun, Prasert Rukmanee, Supalarp Puangsa-Art, Nipon Thanyavanich, Cristian Koepfli, Ingrid Felger, Jetsumon Sattabongkot, Pratap Singhasivanon
BACKGROUND: Low-density asymptomatic infections of Plasmodium spp. are common in low endemicity areas worldwide, but outside Africa, their contribution to malaria transmission is poorly understood. Community-based studies with highly sensitive molecular diagnostics are needed to quantify the asymptomatic reservoir of Plasmodium falciparum and P. vivax infections in Thai communities. METHODS: A cross-sectional survey of 4309 participants was conducted in three endemic areas in Kanchanaburi and Ratchaburi provinces of Thailand in 2012...
October 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29063526/malaria-cases-in-switzerland-from-2005-to-2015-and-recent-rise-of-imported-plasmodium-vivax-malaria
#15
Gilles Eperon, Sophie Durieux-Paillard, Anne Mauris, François Chappuis, Nicole Gysin
Reporting cases of malaria to the Federal Office of Public Health has been mandatory in Switzerland since 1974. We analysed notifications of imported confirmed malaria cases between 2005 and 2015 in Switzerland or Liechtenstein. Data for previously visited countries, nationality and reason for travelling were analysed. In contrast with the impressive drop of malaria cases reported worldwide since 2000, we found that the number of malaria cases imported yearly in Switzerland doubled in 2014 and 2015 compared to the average for the preceding decade...
October 24, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29056574/plasmodium-detection-and-differentiation-by-direct-on-blood-pcr-nucleic-acid-lateral-flow-immunoassay-development-validation-and-evaluation
#16
Johanna M Roth, Laura de Bes, Patrick Sawa, George Omweri, Victor Osoti, Boris Oberheitmann, Henk D F H Schallig, Pètra F Mens
Decreasing malaria transmission warrants the search for highly sensitive point-of-care diagnostics, especially in resource-limited settings. The direct-on-blood PCR nucleic acid lateral flow immunoassay (db-PCR-NALFIA) is a simplified PCR-based technique with a lateral flow readout that does not require sample preparation. Two duplex db-PCR-NALFIAs were developed: a pan-Plasmodium/Plasmodium falciparum (pan/P. falciparum) and a pan-Plasmodium/Plasmodium vivax (pan/P. vivax) assay. Confirmed positive (n = 61) and negative controls (n = 40) were used for laboratory validations...
October 19, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/29050948/detection-of-malaria-parasites-after-treatment-in-travelers-a-12-months-longitudinal-study-and-statistical-modelling-analysis
#17
Manijeh Vafa Homann, S Noushin Emami, Victor Yman, Christine Stenström, Klara Sondén, Hanna Ramström, Mattias Karlsson, Muhammad Asghar, Anna Färnert
The rapid clearance of malaria parasite DNA from circulation has widely been accepted as a fact without being systemically investigated. We assessed the persistence of parasite DNA in travelers treated for Plasmodium falciparum malaria in a malaria-free area. Venous blood was collected at the time of admission and prospectively up to one year. DNA and RNA were extracted and analyzed using species-specific and gametocyte-specific real-time PCR as well as merozoite surface protein 2 (msp2)-PCR. In 31 successfully treated individuals, asexual parasites were seen by microscopy until two days after treatment, whereas parasite DNA was detected by msp2- and species-specific PCR up to days 31 and 42, respectively...
November 2017: EBioMedicine
https://www.readbyqxmd.com/read/29041927/diagnostic-performance-of-the-loop-mediated-isothermal-amplification-lamp-based-illumigene-%C3%A2-malaria-assay-in-a-non-endemic-region
#18
Anne-Sophie De Koninck, Lieselotte Cnops, Mattias Hofmans, Jan Jacobs, Dorien Van den Bossche, Jan Philippé
BACKGROUND: Light microscopy and antigen-based rapid diagnostic tests are the primary diagnostic tools for detecting malaria, although being labour-intensive and frequently challenged by lack of personnel's experience and low levels of parasite density. The latter being especially important in non-endemic settings. Novel molecular techniques aim to overcome this drawback. The objective of this study was to assess the diagnostic performance of the illumigene malaria assay(®) (Meridian Bioscience) compared to microscopy, RDT and real-time PCR...
October 17, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29037202/high-prevalence-of-very-low-plasmodium-falciparum-and-plasmodium-vivax-parasitaemia-carriers-in-the-peruvian-amazon-insights-into-local-and-occupational-mobility-related-transmission
#19
Gabriel Carrasco-Escobar, Julio Miranda-Alban, Carlos Fernandez-Miñope, Kimberly C Brouwer, Katherine Torres, Maritza Calderon, Dionicia Gamboa, Alejandro Llanos-Cuentas, Joseph M Vinetz
BACKGROUND: The incidence of malaria due both to Plasmodium falciparum and Plasmodium vivax in the Peruvian Amazon has risen in the past 5 years. This study tested the hypothesis that the maintenance and emergence of malaria in hypoendemic regions such as Amazonia is determined by submicroscopic and asymptomatic Plasmodium parasitaemia carriers. The present study aimed to precisely quantify the rate of very-low parasitaemia carriers in two sites of the Peruvian Amazon in relation to transmission patterns of P...
October 16, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29020345/plasmodium-malariae-in-israeli-travelers-a-nationwide-study
#20
Yarden Yavne, Eyal Leshem, Yael Paran, Eyal Nadir, Miriam Weinberger, Michal Stein, Neta Petersiel, Dafna Yahav, Tamar Grossman, Eli Schwartz
Background: Little is known about Plasmodium malariae, a relatively rare cause of malaria in returned travelers. Recently, polymerase chain reaction (PCR) use for malaria diagnosis has enhanced specificity of P. malariae detection. The study objective was to describe the unique aspects of P. malariae diagnosis and clinical course in travelers. Methods: Malaria is a reportable disease in Israel. All PCR-proven P. malariae monoinfections in Israeli travelers between January 2008 and January 2017 were retrieved from the Ministry of Health Reference Parasitology Laboratory...
August 9, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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