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https://www.readbyqxmd.com/read/28449088/clinical-manifestations-of-scrub-typhus
#1
Senaka Rajapakse, Praveen Weeratunga, Sriharan Sivayoganathan, Sumadhya Deepika Fernando
The mite-borne rickettsial zoonosis scrub typhus is widely prevalent in parts of Southeast and Far East Asia, and northern Australia. The disease is an acute febrile illness, associated with rash and often an eschar, which responds dramatically to treatment with antibiotics. In some cases it results in a serious illness leading to multiple organ involvement and death. The disease manifestations are thought to result from a systemic vasculitis, caused by both direct effects of the organisms as well as an exaggerated immune response, although little is understood about its pathogenesis...
April 25, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28419138/clinical-significance-of-ngal-and-kim-1-for-acute-kidney-injury-in-patients-with-scrub-typhus
#2
In O Sun, Sung Hye Shin, A Young Cho, Hyun Ju Yoon, Mi Yok Chang, Kwang Young Lee
BACKGROUND: The aim of this study is to investigate the clinical significance of neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) for acute kidney injury (AKI) in patients with scrub typhus. METHODS: From 2014 to 2015, 145 patients were diagnosed with scrub typhus. Of these, we enrolled 138 patients who were followed up until renal recovery or for at least 3 months. We measured serum and urine NGAL and KIM-1 levels and evaluated prognostic factors affecting scrub typhus-associated AKI...
2017: PloS One
https://www.readbyqxmd.com/read/28412201/nitric-oxide-enhanced-the-growth-of-an-obligated-intracellular-bacterium-orientia-tsutsugamushi-in-murine-macrophages
#3
Motohiko Ogawa, Masaaki Satoh, Michiyo Kataoka, Shuji Ando, Masayuki Saijo
Orientia tsutsugamushi is the causative agent of scrub typhus. It is an obligate intracellular bacterium that grows only in eukaryotic cells. Macrophages play an important role in innate immunity by surveilling the human body for pathogens. In present study, it was demonstrated that O. tsutsugamushi propagated well in LPS-activated RAW 264.7 macrophages, but not in non-activated macrophages. In LPS-activated macrophages, the expression of Nos2, which encodes the inducible nitric oxide (NO) synthase (iNOS), was highly upregulated compared to those in non-activated macrophages...
April 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28407761/acute-phase-diagnosis-of-murine-and-scrub-typhus-in-belgian-travelers-by-polymerase-chain-reaction-a-case-report
#4
Caroline Theunissen, Lieselotte Cnops, Marjan Van Esbroeck, Ralph Huits, Emmanuel Bottieau
No abstract text is available yet for this article.
April 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28405985/clinical-profile-and-complications-of-scrub-typhus-hospital-based-study-in-sub-himalayan-region
#5
Ritesh Kumar, Surinder Thakur, Rajesh Bhawani, Anil Kanga, Asha Ranjan
BACKGROUND: Scrub typhus is a documented disease in Himachal Pradesh, but there have been no clinico-epidemiological studies in this area. The present study is done with IgM ELISA as a diagnostic test which has higher sensitivity and specificity as most of previous studies had used Weil Felix test as a diagnostic test. METHODOLOGY: This was a prospective observational study. All the patients more than 18 years of age with positive IgM ELISA for scrub typhus with or without eschar were included...
December 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28403767/tick-borne-infectious-diseases-in-australia
#6
REVIEW
Stephen R Graves, John Stenos
Tick bites in Australia can lead to a variety of illnesses in patients. These include infection, allergies, paralysis, autoimmune disease, post-infection fatigue and Australian multisystem disorder. Rickettsial (Rickettsia spp.) infections (Queensland tick typhus, Flinders Island spotted fever and Australian spotted fever) and Q fever (Coxiella burnetii) are the only systemic bacterial infections that are known to be transmitted by tick bites in Australia. Three species of local ticks transmit bacterial infection following a tick bite: the paralysis tick (Ixodes holocyclus) is endemic on the east coast of Australia and causes Queensland tick typhus due to R...
April 17, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28398677/preparing-for-biological-threats-addressing-the-needs-of-pregnant-women
#7
REVIEW
Amelia K Watson, Sascha Ellington, Christina Nelson, Tracee Treadwell, Denise J Jamieson, Dana M Meaney-Delman
Intentional release of infectious agents and biological weapons to cause illness and death has the potential to greatly impact pregnant women and their fetuses. We review what is known about the maternal and fetal effects of seven biological threats: Bacillus anthracis (anthrax); variola virus (smallpox); Clostridium botulinum toxin (botulism); Burkholderia mallei (glanders) and Burkholderia pseudomallei (melioidosis); Yersinia pestis (plague); Francisella tularensis (tularemia); and Rickettsia prowazekii (typhus)...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28390848/-the-advent-of-a-newborn-specialty-19th-century-pediatrics
#8
Jean-Jacques Baudon
Pediatrics began under the most unfavorable conditions that are difficult to imagine nowadays. Children at the start of the 19th century were considered as negligible. The death rate was tremendous, increased by the work of children in factories as soon as 6 years of age in textile industries. In upper classes, infants were fed by a wet nurse, far from their parents and death rate was high as well. The emergence of pediatrics was the result of work carried out in adult medicine in the first half of the 19th century: clinical anatomic method, knowledge of contagious diseases even before the discovery of bacteria, birth of bacteriology...
April 5, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28386493/dengue-and-scrub-typhus-coinfection-in-a-patient-presenting-with-febrile-illness
#9
Surendra Sapkota, Sudeep Bhandari, Subash Sapkota, Rabin Hamal
Dengue fever and scrub typhus are common causes of acute febrile illness of unclear origin in Asia. Though coinfections of many vector-borne diseases have been described, articles on dengue and scrub typhus coinfection are distinctly limited. In case of coinfection with dengue and scrub typhus, vigilant monitoring of vitals, platelets transfusion, and timely treatment with doxycycline are necessary. High degree of suspicion has to be made for coinfection in a patient presenting with febrile illness with thrombocytopenia and deranged laboratory parameters in postmonsoon season in endemic regions in Asia...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28361787/iap-guidelines-on-rickettsial-diseases-in-children
#10
Narendra Rathi, Atul Kulkarni, Vijay Yewale
OBJECTIVE: To formulate practice guidelines on rickettsial diseases in children for pediatricians across India. JUSTIFICATION: Rickettsial diseases are increasingly being reported from various parts of India. Due to low index of suspicion, nonspecific clinical features in early course of disease, and absence of easily available, sensitive and specific diagnostic tests, these infections are difficult to diagnose. With timely diagnosis, therapy is easy, affordable and often successful...
March 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28356672/scrub-typhus-meningitis-in-a-renal-transplant-recipient
#11
J Dhanapriya, T Dineshkumar, R Sakthirajan, S Murugan, V Jayaprakash, T Balasubramaniyan, N Gopalakrishnan
Scrub typhus is a rickettsial infection commonly seen in Asia. The clinical presentation ranges from nonspecific febrile illness to potentially fatal multiorgan involvement such as liver, kidney, or lung. Central nervous system involvement is uncommon. We report a 45-year-old female renal transplant recipient who presented with fever, headache, meningeal signs, graft dysfunction, and eschar. IgM antibodies against Orientia tsutsugamushi were positive by enzyme-linked immunosorbent assay. Despite oral doxycycline therapy for 5 days, she did not improve but responded well to intravenous azithromycin...
March 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28322701/typhus-group-rickettsiosis-texas-usa-2003-2013
#12
Kristy O Murray, Nicole Evert, Bonny Mayes, Eric Fonken, Timothy Erickson, Melissa N Garcia, Tom Sidwa
We characterized the epidemiology of typhus group rickettsiosis in Texas, USA. During 2003-2013, a total of 1,762 cases were reported to the state health department. The number of diagnosed cases and geographic expansion increased over time. Physician awareness is critical to diagnose and effectively treat rickettsial infections.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28301394/effects-on-the-anti-abo-titers-of-military-blood-donors-from-a-predeployment-vaccination-program
#13
Olle Berséus
BACKGROUND: The use of blood group O as "universal blood" for emergency whole blood transfusions carries the risk for a hemolytic transfusion reaction mediated by incompatible A-/B-antibodies. This risk can be minimized by assuring that the donor has a low titer of anti-A and anti-B. The level of these naturally occurring antibodies have been shown to be increased by vaccination with most biologically derived vaccines. This boostering effect has been investigated for the new generation of vaccines...
March 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28298367/incidence-risk-factors-and-clinical-outcomes-of-acute-kidney-injury-associated-with-scrub-typhus-a-retrospective-study-of-510-consecutive-patients-in-south-korea-2001-2013
#14
Kyungo Hwang, Ha Nee Jang, Tae Won Lee, Hyun Seop Cho, Eunjin Bae, Se-Ho Chang, Dong Jun Park
OBJECTIVES: Renal involvement in scrub typhus ranges from simple urinary abnormalities to acute kidney injury (AKI) leading to death. This study evaluated the incidence, predictors and prognosis of AKI associated with scrub typhus according to the RIFLE (risk, injury, failure, loss, end-stage kidney disease) criteria. METHODS: We retrospectively evaluated the medical records of patients diagnosed with scrub typhus from January 2001 to November 2013 in Gyeongsang National University Hospital...
March 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28291501/lateral-flow-rapid-test-for-accurate-and-early-diagnosis-of-scrub-typhus-a-febrile-illness-of-historically-military-importance-in-the-pacific-rim
#15
Chien-Chung Chao, Zhiwen Zhangm, Giulia Weissenberger, Hua-Wei Chen, Wei-Mei Ching
Scrub typhus (ST) is an infection caused by Orientia tsutsugamushi. Historically, ST was ranked as the second most important arthropod-borne medical problem only behind malaria during World War II and the Vietnam War. The disease occurs mainly in Southeast Asia and has been shown to emerge and reemerge in new areas, implying the increased risk for U.S. military and civilian personnel deployed to these regions. ST can effectively be treated by doxycycline provided the diagnosis is made early, before the development of severe complications...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28289147/gfpuv-expressing-recombinant-rickettsia-typhi-a-useful-tool-for-the-study-of-pathogenesis-and-cd8-t-cell-immunology-in-rickettsia-typhi-infection
#16
Matthias Hauptmann, Nicole Burkhardt, Ulrike Munderloh, Svenja Kuehl, Ulricke Richardt, Susanne Krasemann, Kristin Hartmann, Till Krech, Bernhard Fleischer, Christian Keller, Anke Osterloh
Rickettsia (R) typhi is the causative agent of endemic typhus, a disease that occurs wordwide with increasing incidence and can be fatal. Because of its obligate intracellular life style, genetic manipulation of this pathogen is difficult. Nonetheless, in recent years genetic manipulation tools have been successfully applied to rickettsiae. We describe here for the first time the transformation of R. typhi with the pRAM18dRGA plasmid that originally derives from R. amblyommatis and encodes for the expression of GFP(uv) Transformed R...
March 13, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28282373/murine-models-of-scrub-typhus-associated-with-host-control-of-orientia-tsutsugamushi-infection
#17
Nicole L Mendell, Donald H Bouyer, David H Walker
BACKGROUND: Scrub typhus, a febrile illness of substantial incidence and mortality, is caused by infection with the obligately intracellular bacterium Orientia tsutsugamushi. It is estimated that there are more than one million cases annually transmitted by the parasitic larval stage of trombiculid mites in the Asia-Pacific region. The antigenic and genetic diversity of the multiple strains of O. tsutsugamushi hinders the advancement of laboratory diagnosis, development of long-lasting vaccine-induced protection, and interpretation of clinical infection...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28273989/healthcare-associated-infections-in-a-resource-limited-setting
#18
Chanaveerappa Bammigatti, Saikumar Doradla, Harish Narasimha Belgode, Harichandra Kumar, Rathinam Palamalai Swaminathan
INTRODUCTION: Health Care associated Infections (HAI) are the most common complications affecting the hospitalized patients. HAI are more common in developing and under developed countries. However, there are no systematic surveillance programs in these countries. AIM: To find out the burden, predisposing factors and multidrug resistant organisms causing HAI in a resource limited setting. MATERIALS AND METHODS: This prospective observational study was done at Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER)...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28273079/climate-variability-animal-reservoir-and-transmission-of-scrub-typhus-in-southern-china
#19
Yuehong Wei, Yong Huang, Xiaoning Li, Yu Ma, Xia Tao, Xinwei Wu, Zhicong Yang
OBJECTIVES: We aimed to evaluate the relationships between climate variability, animal reservoirs and scrub typhus incidence in Southern China. METHODS: We obtained data on scrub typhus cases in Guangzhou every month from 2006 to 2014 from the Chinese communicable disease network. Time-series Poisson regression models and distributed lag nonlinear models (DLNM) were used to evaluate the relationship between risk factors and scrub typhus. RESULTS: Wavelet analysis found the incidence of scrub typhus cycled with a period of approximately 8-12 months and long-term trends with a period of approximately 24-36 months...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28264003/significance-of-major-international-seaports-in-the-distribution-of-murine-typhus-in-taiwan
#20
Chi-Chien Kuo, Nicola Wardrop, Chung-Te Chang, Hsi-Chieh Wang, Peter M Atkinson
BACKGROUND: International seaports are hotspots for disease invasion and pathogens can persist in seaports even after ports are abandoned. Transmitted by fleas infected by Rickettsia typhi, murine typhus, a largely neglected and easily misdiagnosed disease, is known to occur primarily in large seaports. However, the significance of seaports in the occurrence of murine typhus has never been validated quantitatively. METHODOLOGY/PRINCIPAL FINDINGS: We studied the spatial distribution of murine typhus, a notifiable disease, in Taiwan...
March 2017: PLoS Neglected Tropical Diseases
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