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https://www.readbyqxmd.com/read/28821017/the-location-of-australian-buruli-ulcer-lesions-implications-for-unravelling-disease-transmission
#1
Arvind Yerramilli, Ee Laine Tay, Andrew J Stewardson, Peter G Kelley, Emma Bishop, Grant A Jenkin, Mike Starr, Janine Trevillyan, Andrew Hughes, N Deborah Friedman, Daniel P O'Brien, Paul D R Johnson
BACKGROUND: Buruli ulcer (BU), caused by Mycobacterium ulcerans, is increasing in incidence in Victoria, Australia. To improve understanding of disease transmission, we aimed to map the location of BU lesions on the human body. METHODS: Using notification data and clinical records review, we conducted a retrospective observational study of patients diagnosed with BU in Victoria from 1998-2015. We created electronic density maps of lesion locations using spatial analysis software and compared lesion distribution by age, gender, presence of multiple lesions and month of infection...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28821016/expression-of-interferon-inducible-chemokines-and-sleep-wake-changes-during-early-encephalitis-in-experimental-african-trypanosomiasis
#2
Claudia Laperchia, Chiara Tesoriero, Paul F Seke-Etet, Valentina La Verde, Valeria Colavito, Gigliola Grassi-Zucconi, Jean Rodgers, Paul Montague, Peter G E Kennedy, Marina Bentivoglio
BACKGROUND: Human African trypanosomiasis or sleeping sickness, caused by the parasite Trypanosoma brucei, leads to neuroinflammation and characteristic sleep/wake alterations. The relationship between the onset of these alterations and the development of neuroinflammation is of high translational relevance, but remains unclear. This study investigates the expression of interferon (IFN)-γ and IFN-inducible chemokine genes in the brain, and the levels of CXCL10 in the serum and cerebrospinal fluid prior to and during the encephalitic stage of trypanosome infection, and correlates these with sleep/wake changes in a rat model of the disease...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820902/from-hospitalization-records-to-surveillance-the-use-of-local-patient-profiles-to-characterize-cholera-in-vellore-india
#3
Melissa S Cruz, Tania M AlarconFalconi, Meghan A Hartwick, Aishwarya Venkat, Hanna Y Ehrlich, Shalini Anandan, Honorine D Ward, Balaji Veeraraghavan, Elena N Naumova
Despite availability of high quality medical records, health care systems often do not have the resources or tools to utilize these data efficiently. Yet, hospital-based, laboratory-confirmed records may pave the way for building reliable surveillance systems capable of monitoring temporal trends of emerging infections. In this communication, we present a new tool to compress and visualize medical records with a local population profile (LPP) approach, which transforms information into statistically comparable patterns...
2017: PloS One
https://www.readbyqxmd.com/read/28820897/persistent-infection-due-to-a-small-colony-variant-of-burkholderia-pseudomallei-leads-to-pd-1-upregulation-on-circulating-immune-cells-and-mononuclear-infiltration-in-viscera-of-experimental-balb-c-mice
#4
Jia-Xiang See, Samudi Chandramathi, Mahmood Ameen Abdulla, Jamuna Vadivelu, Esaki M Shankar
BACKGROUND: Melioidosis is a neglected tropical disease endemic across South East Asia and Northern Australia. The etiological agent, Burkholderia pseudomallei (B.pseudomallei), is a Gram-negative, rod-shaped, motile bacterium residing in the soil and muddy water across endemic regions of the tropical world. The bacterium is known to cause persistent infections by remaining latent within host cells for prolonged duration. Reactivation of the recrudescent disease often occurs in elders whose immunity wanes...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820896/a-strategy-for-scaling-up-access-to-comprehensive-care-in-adults-with-chagas-disease-in-endemic-countries-the-bolivian-chagas-platform
#5
Maria-Jesus Pinazo, Jimy Pinto, Lourdes Ortiz, Jareth Sánchez, Wilson García, Ruth Saravia, Mirko-R Cortez, Silvia Moriana, Enric Grau, Daniel Lozano, Joaquim Gascon, Faustino Torrico
BACKGROUND: Bolivia has the highest prevalence of Chagas disease (CD) in the world (6.1%), with more than 607,186 people with Trypanosoma cruzi infection, most of them adults. In Bolivia CD has been declared a national priority. In 2009, the Chagas National Program (ChNP) had neither a protocol nor a clear directive for diagnosis and treatment of adults. Although programs had been implemented for congenital transmission and for acute cases, adults remained uncovered. Moreover, health professionals were not aware of treatment recommendations aimed at this population, and research on CD was limited; it was difficult to increase awareness of the disease, understand the challenges it presented, and adapt strategies to cope with it...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820881/vector-competence-of-populations-of-aedes-aegypti-from-three-distinct-cities-in-kenya-for-chikungunya-virus
#6
Sheila B Agha, Edith Chepkorir, Francis Mulwa, Caroline Tigoi, Samwel Arum, Milehna M Guarido, Peris Ambala, Betty Chelangat, Joel Lutomiah, David P Tchouassi, Michael J Turell, Rosemary Sang
BACKGROUND: In April, 2004, chikungunya virus (CHIKV) re-emerged in Kenya and eventually spread to the islands in the Indian Ocean basin, South-East Asia, and the Americas. The virus, which is often associated with high levels of viremia in humans, is mostly transmitted by the urban vector, Aedes aegypti. The expansion of CHIKV presents a public health challenge both locally and internationally. In this study, we investigated the ability of Ae. aegypti mosquitoes from three distinct cities in Kenya; Mombasa (outbreak prone), Kisumu, and Nairobi (no documented outbreak) to transmit CHIKV...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820730/knowledge-of-hepatitis-b-virus-infection-and-its-control-practices-among-dental-students-in-an-indian-city
#7
Vishal Khandelwal, Sushma Khandelwal, Neetu Gupta, Ullal Anand Nayak, Namrata Kulshreshtha, Sudhindra Baliga
Background Hepatitis B virus infection is a general cause of chronic hepatitis, liver cirrhosis and hepato-cellular carcinoma worldwide. It is highly contagious. It is an important reason for morbidity and mortality in the Indian population. Oral health professionals are at the highest risk. Vaccination for hepatitis B can prevent this deadly disease. Methods The present study was designed to evaluate the degree of awareness, knowledge of hepatitis B infection and status of hepatitis B vaccination among dental students...
August 18, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28820724/neurologic-complications-in-persons-with-hiv-infection-in-the-era-of-antiretroviral-therapy
#8
Dennis Kolson
Neurologic complications in persons with HIV infection are less severe in the era of potent antiretroviral therapy but remain highly prevalent. Prior to the use of antiretroviral therapy, opportunistic infections of the central nervous system (CNS) and CNS malignancy were common. Progressive multifocal leukoencephalopathy (PML), however, remains a diagnostic challenge in HIV-infected individuals, and no effective antiviral treatment for PML is currently available. Primary neurologic complications of acute HIV infection include aseptic meningitis and acute inflammatory demyelinating polyneuropathy...
July 2017: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/28820718/water-sanitation-and-hygiene-in-rural-health-care-facilities-a-cross-sectional-study-in-ethiopia-kenya-mozambique-rwanda-uganda-and-zambia
#9
Amy Guo, J Michael Bowling, Jamie Bartram, Georgia Kayser
Safe and sufficient water, sanitation, and hygiene (WaSH) prevent the spread of disease in health-care facilities (HCFs). Little research has been conducted on WaSH in HCF in sub-Saharan Africa. We carried out a cross-sectional study of WaSH in 1,318 randomly selected rural HCF (hospitals, health centers, health posts, and clinics) in regions throughout Ethiopia, Kenya, Mozambique, Rwanda, Uganda, and Zambia. Methods included questionnaires with head doctors and nurses to document WaSH access, continuity, quality, quantity and reliability, and analysis of drinking water samples for Escherichia coli...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820714/epidemiology-of-cutaneous-leishmaniasis-in-a-colombian-municipality
#10
Diego Alejandro Medina-Morales, Manuel E Machado-Duque, Jorge Enrique Machado-Alba
This study describes the epidemiological and clinical characteristics of leishmaniasis and the pharmacological treatment of this disease in the municipality of Pueblo Rico, Risaralda, between January 2010 and December 2014. An observational study was conducted using information from the clinical records and epidemiological reports of patients diagnosed and confirmed with leishmaniasis of any age and sex, including sociodemographic, clinical, and pharmacological variables of the therapy received. Univariate and bivariate analyses were performed...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820706/high-prevalence-of-treponema-pallidum-infection-in-brazilian-prisoners
#11
Maisa Estopa Correa, Julio Croda, Ana Rita Coimbra Motta de Castro, Sandra Maria do Valle Leone de Oliveira, Maurício Antonio Pompilio, Ronaldo Omizolo de Souza, Júlio Henrique Ferreira de Sá Queiroz, Kesia Esther da Silva, Albert L Ko, Simone Simionatto
The number of new syphilis cases in Brazil has risen alarmingly in recent years. However, there is limited data regarding syphilis prevalence in the Brazilian prison population. To facilitate the development of effective interventions, a cross-sectional study was undertaken to determine the prevalence of Treponema pallidum infection, active syphilis, and associated risk factors among Brazilian prisoners. We administered a questionnaire to a population-based sample of prisoners from 12 prisons in Central-West Brazil and collected sera for syphilis testing, from January to December 2013...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820703/assessment-of-u-s-pediatrician-knowledge-of-toxocariasis
#12
Dana M Woodhall, Amanda P Garcia, Craig A Shapiro, Shequenta L Wray, Andi L Shane, Chitra S Mani, Kelly K Stimpert, LeAnne M Fox, Susan P Montgomery
Toxocariasis, one of a group of parasitic diseases known as neglected parasitic infections, is a disease caused by the larvae of two species of Toxocara roundworms, Toxocara canis, from dogs, and less commonly Toxocara cati, from cats. Although most infected individuals are asymptomatic, clinical manifestations may include fever, fatigue, coughing, wheezing, or abdominal pain (visceral toxocariasis) or vision loss, retina damage, or eye inflammation (ocular toxocariasis). To assess U.S. pediatrician knowledge of toxocariasis, we conducted an electronic survey of American Academy of Pediatrics members...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820695/prevalence-and-seroprevalence-of-trypanosoma-cruzi-infection-in-a-military-population-in-texas
#13
Bryant J Webber, Mary T Pawlak, Sandra Valtier, Candelaria C Daniels, Charla C Tully, Edward J Wozniak, Walter D Roachell, Francisco X Sanchez, Audra A Blasi, Thomas L Cropper
Recent biosurveillance findings at Joint Base San Antonio (JBSA), a large military installation located in south-central Texas, indicate the potential for vector-borne human Chagas disease. A cross-sectional study was conducted to determine the prevalence and seroprevalence of Trypanosoma cruzi infection in highest risk subpopulations on the installation, including students and instructors who work and sleep in triatomine-endemic field settings. Real-time polymerase chain reaction, enzyme-linked immunosorbent assay, and indirect immunofluorescent antibody assay were performed on enrolled subjects (N = 1,033), none of whom tested positive for T...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820694/differential-neurovirulence-of-african-and-asian-genotype-zika-virus-isolates-in-outbred-immunocompetent-mice
#14
Nisha K Duggal, Jana M Ritter, Erin M McDonald, Hannah Romo, Farshad Guirakhoo, Brent S Davis, Gwong-Jen J Chang, Aaron C Brault
Although first isolated almost 70 years ago, Zika virus (ZIKV; Flavivirus, Flaviviridae) has only recently been associated with significant outbreaks of disease in humans. Several severe ZIKV disease manifestations have also been recently documented, including fetal malformations, such as microcephaly, and Guillain-Barré syndrome in adults. Although principally transmitted by mosquitoes, sexual transmission of ZIKV has been documented. Recent publications of several interferon receptor knockout mouse models have demonstrated ZIKV-induced disease...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820688/the-phenotype-of-circulating-neutrophils-during-visceral-leishmaniasis
#15
Smriti Sharma, Shweta Srivastva, Richard E Davis, Siddharth Sankar Singh, Rajiv Kumar, Susanne Nylén, Mary E Wilson, Shyam Sundar
Visceral leishmaniasis (VL) is a chronic parasitic disease associated with suppressed T cell responses. Although parasites reside intracellularly in macrophages during chronic VL, neutrophils are the first host cell to infiltrate the infection site and phagocytose the parasite. Subsets of neutrophils with unusual characteristics have been documented in human VL, but whether the total neutrophil population is aberrant during disease is not known. Therefore, we examined phenotypic characteristics of unfractionated polymorphonuclear leukocyte (neutrophils) from subjects with active VL, and compared these with neutrophils from healthy controls or subjects who have been treated for VL...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820685/immune-reconstitution-inflammatory-syndrome-in-hiv-infected-immigrants
#16
María Pérez-Rueda, Michele Hernández-Cabrera, Adela Francés-Urmeneta, Alfonso Angel-Moreno, Elena Pisos-Álamo, Nieves Jaén-Sánchez, Cristina Carranza-Rodríguez, Jose-Luis Pérez-Arellano
Immune reconstitution inflammatory syndrome (IRIS) includes a group of potentially serious inflammatory processes that may be present in HIV-infected patients after initiating highly active antiretroviral therapy (HAART). Paradoxical IRIS is a worsening of symptoms, after an overwhelming response to a previously diagnosed opportunistic infection (OI); unmasking IRIS reveals a previously occult OI. The main objective of the study was to describe the epidemiological, clinical, and outcome data of HIV-infected immigrants, stratified according to high- or low-income countries of origin, who developed IRIS and to compare them with native-born Spanish patients...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820684/lack-of-efficacy-of-liposomal-amphotericin-b-against-acute-and-chronic-trypanosoma-cruzi-infection-in-mice
#17
Karl V Clemons, Raymond A Sobel, Marife Martinez, Rodrigo Correa-Oliveira, David A Stevens
Acute and chronic infection with Trypanosoma cruzi affects millions of people. The current therapeutic options are highly toxic and often not effective. Liposomal amphotericin B (LABORATORY) has been demonstrated previously to have some activity in murine models. In our studies, higher dosages given multiple times were tested for activity against acute or chronic disease, exploring whether intermittent and brief regimens could be effective, as might then prove useful in human, particularly outpatient, therapy...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820683/malaria-in-the-guangxi-zhuang-autonomous-region-in-china-a-twelve-year-surveillance-data-study
#18
Kangming Lin, Haiyan Wei, Weikang Jiang, Jun Li, Weiwei Zhang, Shujiao Wei, Yichao Yang, Yaming Huang, Xiangyang Feng, Hong Tu, Jun Feng
The incidence of an indigenous malaria, defined as malaria acquired by a local mosquito transmission, declined from 2004 to 2015 in the Guangxi Zhuang Autonomous Region. However, imported malaria, defined as malaria acquired from other endemic regions outside of China, has been increasing in the region, as in the rest of the country, particularly the disease caused by Plasmodium falciparum. A retrospective study was conducted to explore malaria-endemic characteristics in Guangxi during the 2004-2015 timeframe; a total of 2,726 confirmed malaria cases were reported, and the majority (90...
August 7, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820576/angiostrongyliasis-rat-lungworm-disease-viewpoints-from-hawai-i-island
#19
Kathleen Howe, Susan I Jarvi
Hawai'i, particularly east Hawai'i Island, is the epicenter for angiostrongyliasis in the United States. Case numbers have been increasing and appear to parallel the introduction and spread of the semislug (Parmarion martensi) to east Hawai'i. The infective larvae in rainwater catchment as a source for household and agricultural water may also play a role. The spread of Angiostrongylus cantonensis as well as the potential introduction of the semislug P. martensi should be a concern to the mainland United States...
August 18, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28820555/satellite-atrial-septal-vegetations-secondary-to-mitral-valve-endocarditis
#20
Germán Cedielq, Marta Guillen Marzo, Ramón de Castro Aritmendiz, Jairo Toro Gil, Alfredo Bardají
Infective endocarditis is a challenging clinical problem with a high rate of mortality. Early recognition of this disease, and especially its complications, remain a critical task for the cardiologist. In this scenario, atrial endocarditis is a rare and sometimes unrecognized complication of mitral valve endocarditis. Herein is reported a clinical case that shows how a satellite vegetation in the atrial septum can be produced in a patient with mitral regurgitation secondary to mitral valve endocarditis. Video 1: Transthoracic echocardiography showing the presence of vegetation in the posterior mitral leaflet, severe secondary mitral regurgitation, and satellite vegetation in the atrial septum...
March 2017: Journal of Heart Valve Disease
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