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https://www.readbyqxmd.com/read/28698027/access-to-yellow-fever-travel-vaccination-centres-in-england-wales-and-northern-ireland-a-geographical-study
#1
Jakob Petersen, Hilary Simons, Dipti Patel
BACKGROUND: More than 700,000 trips were made by residents in England, Wales, and Northern Ireland (EWNI) in 2015 to tropical countries endemic for yellow fever, a potentially deadly, yet vaccine-preventable disease transmitted by mosquitoes. The aim of this study was to map the geographical accessibility of yellow fever vaccination centres (YFVC) in EWNI. METHODS: The location of 3208 YFVC were geocoded and the average geodetic distance to nearest YFVC was calculated for each population unit...
July 8, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28695834/sand-flies-and-their-control-methods
#2
Hüseyin Çetin, Yusuf Özbel
The main aim of managing arthropod vectors that carry the disease agents is interrupting the infection cycle. Therefore, the management of the disease implies that all precautions related to all elements (i.e., human, arthropod vector, and reservoir) in the infection cycle need to be taken. There are important points that need to be considered while dealing with sand flies (Diptera: Psychodidae: Phlebotominae), which in many regions worldwide, particularly in tropical and subtropical areas, are vectors of diseases such as leishmaniasis and sand fly fever and are the arthropods of the infection cycle...
June 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28688628/will-mayaro-virus-be-responsible-for-the-next-outbreak-of-an-arthropod-borne-virus-in-brazil
#3
REVIEW
Danillo Lucas Alves Esposito, Benedito Antonio Lopes da Fonseca
Mayaro virus (MAYV) is an alphavirus from the Togaviridae family and is transmitted mainly by Hemagogus mosquitoes. This virus circulates in high-density tropical forests or rural areas of Central and South America causing a disease characterized by high-grade fever, maculopapular skin rash and marked arthralgia that, in some patients, can persist for long periods after infection and may be misinterpreted as chikungunya. Although only a few outbreaks involving this virus have been reported, in the last years the number of MAYV infections has increased in the central and northern regions of Brazil...
July 6, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28681816/clinical-and-laboratory-profile-of-dengue-viral-infections-in-and-around-mangalore-india
#4
Tina Damodar, Meena Dias, Reeta Mani, K A Shilpa, Ashwini Manoor Anand, V Ravi, Jutang Tiewsoh
BACKGROUND: Dengue (DEN) is being recognised as the world's major emerging tropical disease. Clinically, DEN may resemble other infections such as malaria, leptospirosis, and typhoid, and thus, laboratory investigations are required for definitive diagnosis. Secondary DEN infection, caused most often by dengue virus (DENV) serotypes 2 and 3, is known to present with severe disease manifestations. This study was undertaken to examine the clinical and laboratory profile of DEN viral infections and to determine the circulating serotypes in and around Mangalore, India...
April 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28674145/the-strataa-study-protocol-a-programme-to-assess-the-burden-of-enteric-fever-in-bangladesh-malawi-and-nepal-using-prospective-population-census-passive-surveillance-serological-studies-and-healthcare-utilisation-surveys
#5
Thomas C Darton, James E Meiring, Susan Tonks, Md Arifuzzaman Khan, Farhana Khanam, Mila Shakya, Deus Thindwa, Stephen Baker, Buddha Basnyat, John D Clemens, Gordon Dougan, Christiane Dolecek, Sarah J Dunstan, Melita A Gordon, Robert S Heyderman, Kathryn E Holt, Virginia E Pitzer, Firdausi Qadri, K Zaman, Andrew J Pollard
INTRODUCTION: Invasive infections caused by Salmonella enterica serovar Typhi and Paratyphi A are estimated to account for 12-27 million febrile illness episodes worldwide annually. Determining the true burden of typhoidal Salmonellae infections is hindered by lack of population-based studies and adequate laboratory diagnostics.The Strategic Typhoid alliance across Africa and Asia study takes a systematic approach to measuring the age-stratified burden of clinical and subclinical disease caused by typhoidal Salmonellae infections at three high-incidence urban sites in Africa and Asia...
July 2, 2017: BMJ Open
https://www.readbyqxmd.com/read/28671959/prevalence-of-lassa-virus-disease-lvd-in-nigerian-children-with-fever-or-fever-and-convulsions-in-an-endemic-area
#6
Odigie C Akhuemokhan, Rosemary O Ewah-Odiase, Nosa Akpede, Jacqueline Ehimuan, Donatus I Adomeh, Ikpomwonsa Odia, Sylvia C Olomu, Meike Pahlmann, Beate Becker-Ziaja, Christian T Happi, Danny A Asogun, Sylvanus A Okogbenin, Peter O Okokhere, Osagie S Dawodu, Irekpono U Omoike, Pardis C Sabeti, Stephan Günther, George O Akpede
BACKGROUND: Convulsions with fever in children are a common neurologic emergency in the tropics, and determining the contribution of endemic viral infections can be challenging. In particular, there is a dearth of data on the prevalence and clinical differentiation of Lassa virus disease (LVD) in febrile children in endemic areas of Nigeria, which has multiple lineages of the virus. The aim of this study was to determine the prevalence and presentation of LVD in febrile children with and without convulsions...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28647178/traditional-usage-phytochemistry-and-pharmacology-of-croton-sylvaticus-hochst-ex-c-krauss
#7
REVIEW
Alfred Maroyi
Croton sylvaticus (C. sylvaticus) is widely used as herbal medicine by the indigenous people of tropical Africa. The potential of C. sylvaticus as herbal medicine, the phytochemistry and pharmacological properties of its parts used as herbal medicines are reviewed. The extensive literature survey revealed that C. sylvaticus is traditionally used to treat or manage at least 24 human and animal diseases and ailments. The species is used as herbal medicine for diseases and ailments such as abdominal pains, boils, fever, inflammation, malaria, rheumatism, swellings and tuberculosis and as ethnoveterinary medicine...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28646879/discovery-of-a-single-male-aedes-aegypti-l-in-merseyside-england
#8
Thom Dallimore, Tony Hunter, Jolyon M Medlock, Alexander G C Vaux, Ralph E Harbach, Clare Strode
BACKGROUND: The mosquito Aedes aegypti (L.) is found in tropical and sub-tropical regions where it is the major vector of dengue fever, yellow fever, chikungunya and more recently Zika virus. Given its importance as a vector of arboviruses and its propensity to be transported to new regions, the European Centre for Disease Prevention and Control (ECDC) has placed Ae. aegypti on a list of potentially invasive mosquito species. It was previously reported in the United Kingdom (UK) in 1865 and 1919 but did not establish on either occasion...
June 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28644847/role-of-classic-signs-as-diagnostic-predictors-for-enteric-fever-among-returned-travellers-relative-bradycardia-and-eosinopenia
#9
Takashi Matono, Satoshi Kutsuna, Yasuyuki Kato, Yuichi Katanami, Kei Yamamoto, Nozomi Takeshita, Kayoko Hayakawa, Shuzo Kanagawa, Mitsuo Kaku, Norio Ohmagari
BACKGROUND: The lack of characteristic clinical findings and accurate diagnostic tools has made the diagnosis of enteric fever difficult. We evaluated the classic signs of relative bradycardia and eosinopenia as diagnostic predictors for enteric fever among travellers who had returned from the tropics or subtropics. METHODS: This matched case-control study used data from 2006 to 2015 for culture-proven enteric fever patients as cases. Febrile patients (>38.3°C) with non-enteric fever, who had returned from the tropics or subtropics, were matched to the cases in a 1:3 ratio by age (±3 years), sex, and year of diagnosis as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28630831/unusual-presentation-of-mycetoma-of-the-foot-a-rare-case-report
#10
Amit Grover, Prashanth Nagaraj, Vinay M Joseph, Daksh Gadi
INTRODUCTION: Mycetoma is a chronic granulomatous infection. It is caused by actinomycetes or fungi. It is common in tropical countries and males. Predisposing conditions include malnutrition, poor hygiene, history of trauma, wounds on barefeet, and systemic infections. Eumycotic mycetoma commonly involves lower extremities whereas actinomycosis affects the cervicofacial, thoracic, and abdominal regions. Mycetoma presents with a chronic indurated ulcerated plague with swelling and yellowish discharge of sulfur granules...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28615658/serotyping-dengue-virus-with-isothermal-amplification-and-a-portable-sequencer
#11
Junya Yamagishi, Lucky R Runtuwene, Kyoko Hayashida, Arthur E Mongan, Lan Anh Nguyen Thi, Linh Nguyen Thuy, Cam Nguyen Nhat, Kriengsak Limkittikul, Chukiat Sirivichayakul, Nuankanya Sathirapongsasuti, Martin Frith, Wojciech Makalowski, Yuki Eshita, Sumio Sugano, Yutaka Suzuki
The recent development of a nanopore-type portable DNA sequencer has changed the way we think about DNA sequencing. We can perform sequencing directly in the field, where we collect the samples. Here, we report the development of a novel method to detect and genotype tropical disease pathogens, using dengue fever as a model. By combining the sequencer with isothermal amplification that only requires a water bath, we were able to amplify and sequence target viral genomes with ease. Starting from a serum sample, the entire procedure could be finished in a single day...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28598355/ecological-niche-modeling-identifies-fine-scale-areas-at-high-risk-of-dengue-fever-in-the-pearl-river-delta-china
#12
Qiaoxuan Li, Hongyan Ren, Lan Zheng, Wei Cao, An Zhang, Dafang Zhuang, Liang Lu, Huixian Jiang
Dengue fever (DF) is one of the most common and rapidly spreading mosquito-borne viral diseases in tropical and subtropical regions. In recent years, this imported disease has posed a serious threat to public health in China, especially in the Pearl River Delta (PRD). Although the severity of DF outbreaks in the PRD is generally associated with known risk factors, fine scale assessments of areas at high risk for DF outbreaks are limited. We built five ecological niche models to identify such areas including a variety of climatic, environmental, and socioeconomic variables, as well as, in some models, extracted principal components...
June 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28583207/knockdown-resistance-kdr-of-the-voltage-gated-sodium-channel-gene-of-aedes-aegypti-population-in-denpasar-bali-indonesia
#13
Penny Humaidah Hamid, Joko Prastowo, Anis Widyasari, Anja Taubert, Carlos Hermosilla
BACKGROUND: Aedes aegypti is the main vector of several arthropod-borne viral infections in the tropics profoundly affecting humans, such as dengue fever (DF), West Nile (WN), chikungunya and more recently Zika. Eradication of Aedes still largely depends on insecticides, which is the most cost-effective strategy, and often inefficient due to resistance development in exposed Aedes populations. We here conducted a study of Ae. aegypti resistance towards several insecticides regularly used in the city of Denpasar, Bali, Indonesia...
June 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28571194/bilateral-cervical-lymphadenopathy-atypical-presentation-of-malaria-a-rare-case-report
#14
Dwijen Das, Kallol Bhattacharjee, Surinder Ghintala, Amit Kr Kalwar
Malaria, the most common parasitic disease of humans, remains a major health and economic burden in most tropical countries. An 18-year-old male from rural north eastern India presented with four days fever with chill. The patient was conscious, oriented but confused. Physical examination revealed bilateral multiple, discrete cervical lymphadenitis without organomegaly or sternal tenderness. Blood parameters were normal except transient thrombocytopenia. Blood smear and antigen were positive for both Plasmodium vivax and falciparum with negative viral markers...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28545155/rapid-diagnostic-tests-for-typhoid-and-paratyphoid-enteric-fever
#15
REVIEW
Lalith Wijedoru, Sue Mallett, Christopher M Parry
BACKGROUND: Differentiating both typhoid (Salmonella Typhi) and paratyphoid (Salmonella Paratyphi A) infection from other causes of fever in endemic areas is a diagnostic challenge. Although commercial point-of-care rapid diagnostic tests (RDTs) for enteric fever are available as alternatives to the current reference standard test of blood or bone marrow culture, or to the widely used Widal Test, their diagnostic accuracy is unclear. If accurate, they could potentially replace blood culture as the World Health Organization (WHO)-recommended main diagnostic test for enteric fever...
May 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28540269/species-dependent-clinical-findings-of-malaria-caused-by-various-plasmodia-in-an-endemic-area-of-kerman-province-southeastern-iran
#16
Mehdi Nateghpour, Ali Hosseininasab, Mehrdad Farrokhnia, Foroughieh Dastouri, Katayun Alidoosti, Dadkhoda Sadequi, Asadollah Ahmadi
BACKGROUND: Malaria is a big problem of public health in many tropical countries where socioeconomic development is deficient. Four species of plasmodium are capable of infecting human: P. falciparum, P. malaria, P.vivax, P. ovale. Southeastern corner of Iran, including Sistan and Baluchestan, Hormozgan and the tropical part of Kerman Province, are endemic region of malaria. This study aimed to find out clinical findings in malaria caused by various plasmodium species in moderate transmission area of southern Kerman Province...
April 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28527249/-sociodemographic-and-clinical-characteristics-of-patients-infected-with-leptospira-spp-treated-at-four-hospitals-in-medell%C3%A3-n-colombia-2008-2013
#17
Lina María Echeverri-Toro, Sara Penagos, Laura Castañeda, Pablo Villa, Santiago Atehortúa, Faiver Ramírez, Carlos Restrepo, Sigifredo Ospina, Yuli Agudelo, Alicia Hidrón, Paola Agudelo, Eliana Valderrama, Carlos Andrés Agudelo
INTRODUCTION: Leptospirosis remains a significant health problem in tropical regions including Latin America, where its presentation is 100 times higher than that observed in other regions of the world. Mortality reaches 10% in severe cases. Its diagnosis is challenging because clinical manifestations during the initial phase are non-specific and because of limited availability of diagnostic tests. OBJECTIVE: To describe the demographic and clinical characteristics and the outcomes in hospitalized patients with leptospirosis...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28517033/high-throughput-sequencing-of-transposable-element-insertions-suggests-adaptive-evolution-of-the-invasive-asian-tiger-mosquito-towards-temperate-environments
#18
Clément Goubert, Hélène Henri, Guillaume Minard, Claire Valiente Moro, Patrick Mavingui, Cristina Vieira, Matthieu Boulesteix
Invasive species represent unique opportunities to evaluate the role of local adaptation during colonization of new environments. Among these species, the Asian tiger mosquito, Aedes albopictus, is a threatening vector of several human viral diseases, including dengue and chikungunya, and raises concerns about the Zika fever. Its broad presence in both temperate and tropical environments has been considered the reflection of great "ecological plasticity". However, no study has been conducted to assess the role of adaptive evolution in the ecological success of Ae...
May 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28515609/not-all-febrile-critical-illness-with-rash-is-infective-drug-reaction-may-be-a-mimic
#19
Ashok Kumar Pannu, M B Adarsh, Navneet Sharma
We report a case of ciprofloxacin-related drug rash with eosinophilia and systemic symptoms (DRESS) which was initially diagnosed and managed on the line of tropical fever. Later, a diagnosis of definite case of DRESS was made according to the RegiSCAR scoring system and the patient was managed with the removal of ciprofloxacin along with steroids. DRESS is a great masquerader. The diagnosis should be highly suspected in the presence of fever, skin rash, liver involvement, and hypereosinophilia.
April 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28503273/bilateral-optic-neuritis-with-maculopathy-a-rare-manifestation-of-dengue-fever
#20
Y L Boo, S Y Lim, P W Chin, F K Hoo
Dengue fever is a common mosquito-borne disease, which is endemic in tropical and subtropical countries. Bilateral optic neuropathy is a relatively unusual dengue-related ocular complication. Here, we present a case of bilateral optic neuritis with maculopathy complicating dengue infection.
2017: Malaysian Family Physician
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