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Distribution of Tick-Borne Diseases in China Xian-Bo Wu1, Ren-Hua Na2, Shan-Shan Wei2, Jin-Song Zhu3 and Hong-Juan Peng2*
Wu et al. Parasites & Vectors 2013, 6:119 http://www.parasitesandvectors.com/content/6/1/119 REVIEW Open Access Distribution of tick-borne diseases in China Xian-Bo Wu1, Ren-Hua Na2, Shan-Shan Wei2, Jin-Song Zhu3 and Hong-Juan Peng2* Abstract As an important contributor to vector-borne diseases in China, in recent years, tick-borne diseases have attracted much attention because of their increasing incidence and consequent significant harm to livestock and human health. The most commonly observed human tick-borne diseases in China include Lyme borreliosis (known as Lyme disease in China), tick-borne encephalitis (known as Forest encephalitis in China), Crimean-Congo hemorrhagic fever (known as Xinjiang hemorrhagic fever in China), Q-fever, tularemia and North-Asia tick-borne spotted fever. In recent years, some emerging tick-borne diseases, such as human monocytic ehrlichiosis, human granulocytic anaplasmosis, and a novel bunyavirus infection, have been reported frequently in China. Other tick-borne diseases that are not as frequently reported in China include Colorado fever, oriental spotted fever and piroplasmosis. Detailed information regarding the history, characteristics, and current epidemic status of these human tick-borne diseases in China will be reviewed in this paper. It is clear that greater efforts in government management and research are required for the prevention, control, diagnosis, and treatment of tick-borne diseases, as well as for the control of ticks, in order to decrease the tick-borne disease burden in China. Keywords: Ticks, Tick-borne diseases, Epidemic, China Review (Table 1) [2,4]. Continuous reports of emerging tick-borne Ticks can carry and transmit viruses, bacteria, rickettsia, disease cases in Shandong, Henan, Hebei, Anhui, and spirochetes, protozoans, Chlamydia, Mycoplasma,Bartonia other provinces demonstrate the rise of these diseases bodies, and nematodes [1,2]. -
WO 2014/134709 Al 12 September 2014 (12.09.2014) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2014/134709 Al 12 September 2014 (12.09.2014) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every A61K 31/05 (2006.01) A61P 31/02 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/CA20 14/000 174 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 4 March 2014 (04.03.2014) KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (25) Filing Language: English OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (26) Publication Language: English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, (30) Priority Data: ZW. 13/790,91 1 8 March 2013 (08.03.2013) US (84) Designated States (unless otherwise indicated, for every (71) Applicant: LABORATOIRE M2 [CA/CA]; 4005-A, rue kind of regional protection available): ARIPO (BW, GH, de la Garlock, Sherbrooke, Quebec J1L 1W9 (CA). GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (72) Inventors: LEMIRE, Gaetan; 6505, rue de la fougere, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Sherbrooke, Quebec JIN 3W3 (CA). -
Volume - I Ii Issue - Xxviii Jul / Aug 2008
VOLUME - I II ISSUE - XXVIII JUL / AUG 2008 With a worldwide footprint, Rickettsiosis are diseases that are gaining increasing significance as important causes of morbidity and to an extent mortality too. Encompassed within these are two main groups, viz., Rickettsia spotted fever group and the Typhus group (they differ in their surface exposed protein and lipopolysaccharide antigens). A unique thing about these organisms is that, though they are gram-negative bacilli, they 1 Editorial cannot be cultured in the traditional ways that we employ to culture regular bacteria. They Disease need viable eukaryotic host cells and they require a vector too to complete their run up to 2 Diagnosis the human host. Asia can boast of harbouring Epidemic typhus, Scrub typhus, Boutonneuse fever, North Asia Tick typhus, Oriental spotted fever and Q fever. The Interpretation pathological feature in most of these fevers is involvement of the microvasculature 6 (vasculitis/ perivasculitis at various locations). Most often, the clinical presentation initially Trouble is like Pyrexia of Unknown Origin. As they can't be cultured by the routine methods, the 7 Shooting diagnostic approach left is serological assays. A simple to perform investigation is the Weil-Felix reaction that is based on the cross-reactive antigens of OX-19 and OX-2 strains 7 Bouquet of Proteus vulgaris. Diagnosed early, Rickettsiae can be effectively treated by the most basic antibiotics like tetracyclines/ doxycycline and chloramphenicol. Epidemiologically almost omnipresent, the DISEASE DIAGNOSIS segment of this issue comprehensively 8 Tulip News discusses Rickettsiae. Vector and reservoir control, however, is the best approach in any case. -
“Epidemiology of Rickettsial Infections”
6/19/2019 I have got 45 min…… First 15 min… •A travel medicine physician… •Evolution of epidemiology of rickettsial diseases in brief “Epidemiology of rickettsial •Expanded knowledge of rickettsioses vs travel medicine infections” •Determinants of Current epidemiology of Rickettsialinfections •Role of returning traveller in rickettsial diseaseepidemiology Ranjan Premaratna •Current epidemiology vs travel health physician Faculty of Medicine, University of Kelaniya Next 30 min… SRI LANKA •Clinical cases 12 Human Travel & People travel… Human activity Regionally and internationally Increased risk of contact between Bugs travel humans and bugs Deforestation Regionally and internationally Habitat fragmentation Echo tourism 34 This man.. a returning traveler.. down Change in global epidemiology with fever.. What can this be??? • This is the greatest challenge faced by an infectious disease / travel medicine physician • compared to a physician attending to a well streamlined management plan of a non-communicable disease……... 56 1 6/19/2019 Rickettsial diseases • A travel medicine physician… • Represent some of the oldest and most recently recognizedinfectious • Evolution of epidemiology of rickettsial diseases in brief diseases • Expanded knowledge of rickettsioses vs travel medicine • Determinants of Current epidemiology of Rickettsialinfections • Athens plague described during 5th century BC……? Epidemic typhus • Role of returning traveller in rickettsial diseaseepidemiology • Current epidemiology vs travel health physician • Clinical cases 78 In 1916.......... By 1970s-1980s four endemic rickettsioses; a single agent unique to a given geography !!! • R. prowazekii was identified as the etiological agent of epidemic typhus • Rocky Mountain spotted fever • Mediterranean spotted fever • North Asian tick typhus • Queensland tick typhus Walker DH, Fishbein DB. Epidemiology of rickettsial diseases. Eur J Epidemiol 1991 910 Family Rickettsiaceae Transitional group between SFG and TG Genera Rickettsia • R. -
American Society for Rickettsiology: Rickettsial Diseases at the Vector-Pathogen Interface
1 2 Meals Posters and Breaks Meeting Room th 30 Meeting of the 3 American Society for Rickettsiology: Rickettsial Diseases at the Vector-Pathogen Interface June 8-11, 2019 El Dorado Hotel, Santa Fe, New Mexico Oral presentations will be held in the Anasazi Ballroom Poster presentations will be held in the Zia Ballroom Funding for this conference was made possible [in part] by R13 AI126727-01 from the National Institute of Allergy and Infectious Diseases. The views expressed in written conference materials or publications and by speakers and moderators do not necessarily reflect the official policies of the U.S. Department of Health and Human Services; nor does mention of trade names, commercial practices, or organizations imply endorsement by the U.S. Government. 4 Schedule at a Glance 5 SATURDAY Special Symposium Chair: Janet Foley & Chris Paddock Time: 15:00 - 18:00 Date: 8th June 2019 Location: Anzasazi Ballroom 62 - Missing elements of natural history and ecology in Rickettsiology Janet Foley University of California, Davis, USA 72 - Rocky Mountain Spotted Fever and North Asian Tick Typhus: two diseases, the history, geography, diversity of the tick vectors, and common problems in the modern world. Marina Eremeeva Georgia Southern University, Statesboro, USA 65 - What we know and what we don't know about the ecology of Rhipicephalus sanguineus transmitted rickettsias in the Mediterranean area Philippe Parola IHU Méditerranée Infection , Marseille, France 155 - The need for integrative approaches to deal with Rocky Mountain spotted -
The Host-Pathogen Relationship in Rickettsia: Epidemiological Analysis of Rmsf in Ohio and a Comparative Molecular Analysis of Four Vir Genes
THE HOST-PATHOGEN RELATIONSHIP IN RICKETTSIA: EPIDEMIOLOGICAL ANALYSIS OF RMSF IN OHIO AND A COMPARATIVE MOLECULAR ANALYSIS OF FOUR VIR GENES DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Jennifer R. Carmichael, B.S. ***** The Ohio State University 2008 Dissertation Committee: Approved by Paul A. Fuerst, Advisor Gustavo Leone _________________________________ Arthur Burghes Advisor Graduate Program in Molecular Genetics Glen Needham ABSTRACT Members of the vector-borne bacterial genus Rickettsia represent an emerging infectious disease threat and have continually been implicated in epidemics worldwide. It is of vital importance to understand the geographical distribution of disease and rickettsial-infected arthropods vectors. In addition, understanding the dynamics of the relationship between rickettsiae and their arthropod hosts will help aid in identifying important factors for virulence. Dermacentor variabilis dog ticks are the main vector in the eastern United States for Rickettsia rickettsii, the etiological agent of Rocky Mountain spotted fever. The frequency of rickettsial-infected ticks and their geographical location in Ohio over the last twenty years was analyzed. The frequency of rickettsial species was found to remain relatively constant (about 20%), but the incidence of R. rickettsii has increased from 6 to 16%. Also, the geographic distribution of rickettsial-positive ticks has expanded, corresponding to a rise of RMSF in these new areas. Type IV secretion system genes, like the vir group, are important for pathogenicity in many pathogens, but have not been analyzed in Rickettsia. Four vir genes, virB8, virB11, virB4, and virD4 were analyzed in Rickettsia amblyommii infected Amblyomma americanum Lone Star ticks from across the Northeast United States. -
Rocky Mountain Spotted Fever
Spotted Fevers Importance Spotted fevers, which are caused by Rickettsia spp. in the spotted fever group (including (SFG), have been recognized in people for more than a hundred years. The clinical signs are broadly similar in all of these diseases, but the course ranges from mild and Rocky Mountain self-limited to severe and life-threatening. For a long time, spotted fevers were thought to be caused by only a few organisms, including Rickettsia rickettsii (Rocky Spotted Fever Mountain spotted fever) in the Americas, R. conorii (Mediterranean spotted fever) in the Mediterranean region and R. australis (Queensland tick typhus) in Australia. and Many additional species have been recognized as human pathogens since the 1980s. Mediterranean These infections are easily misidentified with commonly used diagnostic tests. For example, some illnesses once attributed to R. rickettsii are caused by R. parkeri, a less Spotted Fever) virulent organism. Animals can be infected with SFG rickettsiae, and develop antibodies to these organisms. With the exception of Rocky Mountain spotted fever and possibly Mediterranean spotted fever in dogs, there is no strong evidence that these organisms Last Updated: November 2012 are pathogenic in animals. It is nevertheless possible that illnesses have not been recognized, or have been attributed to another agent. Rocky Mountain spotted fever, which is a recognized illness among dogs in the North America, was only recently documented in dogs in South America. Etiology Spotted fevers are caused by Rickettsia spp., which are pleomorphic, obligate intracellular, Gram negative coccobacilli in the family Rickettsiaceae and order Rickettsiales of the α-Proteobacteria. The genus Rickettsia contains at least 25 officially validated species and many incompletely characterized organisms. -
Global Biogeographic Regions in a Human-Dominated World: the Case of Human Diseases 1, 2 2 2 3,6 MICHAEL G
Global biogeographic regions in a human-dominated world: the case of human diseases 1, 2 2 2 3,6 MICHAEL G. JUST, JACOB F. NORTON, AMANDA L. TRAUD, TIM ANTONELLI, AARON S. POTEATE, 2 2 1 4,5 GREGORY A. BACKUS, ANDREW SNYDER-BEATTIE, R. WYATT SANDERS, AND ROBERT R. DUNN 1Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695 USA 2Department of Mathematics and Biomathematics Graduate Program, North Carolina State University, Raleigh, North Carolina 27695 USA 3Department of Sociology and Anthropology, North Carolina State University, Raleigh, North Carolina 27695 USA 4Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University, Raleigh, North Carolina 27695 5Center for Macroecology, Evolution, and Climate, Natural History Museum of Denmark, University of Copenhagen, 2100 Copenhagen Ø, Denmark Citation: Just, M. G., J. F. Norton, A. L. Traud, T. Antonelli, A. S. Poteate, G. A. Backus, A. Snyder-Beattie, R. W. Sanders, and R. R. Dunn. 2014. Global biogeographic regions in a human-dominated world: the case of human diseases. Ecosphere 5(11):143. http://dx.doi.org/10.1890/ES14-00201.1 Abstract. Since the work of Alfred Russel Wallace, biologists have sought to divide the world into biogeographic regions that reflect the history of continents and evolution. These divisions not only guide conservation efforts, but are also the fundamental reference point for understanding the distribution of life. However, the biogeography of human-associated species—such as pathogens, crops, or even house guests—has been largely ignored or discounted. As pathogens have the potential for direct consequences on the lives of humans, domestic animals, and wildlife it is prudent to examine their potential biogeographic history. -
Tick-Borne Diseases 79 Tom E
P1: Trim: 8.375in × 10.875in Top: 0.373in Gutter: 0.664in LWBK915-79 LWW-KodaKimble-educational June 21, 2011 21:25 Tick-Borne Diseases 79 Tom E. Christian CORE PRINCIPLES CHAPTER CASES LYME DISEASE 1 Lyme disease is a multisystem spirochetal disease transmitted by tick bite. Geography, Case 79-1 (Question 1) tick species, and duration of attachment guide the decision to use antibiotic prophylaxis. 2 Presence of erythema migrans skin rash is the only manifestation sufficiently specific to Case 79-2 (Questions 1, 2) allow a clinical diagnosis without confirmatory tests. 3 The existence of post-Lyme disease syndromes, although controversial, has resulted in Case 79-4 (Question 1) criteria for fulfilling a provisional diagnosis. 4 Prevention of tick-borne diseases is always preferable to acquisition. Personal Case 79-5 (Question 1) protective measures and other methodologies aid in prevention. ENDEMIC RELAPSING FEVER 1 Tick-borne relapsing fever epidemiology varies with geography, tick, and spirochete Case 79-6 (Questions 1, 2) species involved. SOUTHERN TICK-ASSOCIATED RASH ILLNESS 1 Southern tick-associated rash illness (STARI) is a recently described tick-borne disease Case 79-7 (Question 1) whose etiology and pathogenesis are still being defined. HUMAN GRANULOCYTIC ANAPLASMOSIS 1 Because the clinical manifestations of human monocytic ehrlichiosis (HME) and human Case 79-8 (Question 1) granulocytic anaplasmosis (HGA) are so similar, the presence of a skin rash and other findings may lead to diagnosis. BABESIOSIS 1 Babesiosis is an erythrocytophilic parasitic illness with symptoms that range from Case 79-9 (Questions 1, 2) asymptomatic disease to potential fatality, especially in immunocompromised patients. -
Educational Workshop
Educational Workshop EW14: Pathogenic intracellular bacteria arranged with ESCAR (ESCMID Study Group for Coxiella, Anaplasma, Rickettsia and Bartonella) Convenors: Gilbert Greub (Lausanne, CH) Pierre-Edouard Fournier (Marseille, FR) Faculty: Amel Omezzine Letaief (Sousse, TN) Pierre-Edouard Fournier (Marseille, FR) Achilleas Gikas (Heraklion, GR) Gilbert Greub (Lausanne, CH) Letaief –Spotted fever rickettsiosis Tick-Borne rickettsial pathogens Spotted Fever Group Rickettsioses (SFGR) Amel Omezzine Letaief, MD Farhat Hached Hospital ; Sousse - Tunisia 22/04/2009 ESCAR, 19th ECCMID - Helsinki 1 Session objectives ? True or False ? •There are multiple SFGR •SFGR are of limited geographic distribution •Clinical features are specific of rickettsia species •SFGR are severe diseases •Diagnosis of SFGR is difficult to confirm •Therapy of SFGR has been optimized 22/04/2009 ESCAR, 19th ECCMID - Helsinki 2 Clinical case • A 55-year-old Finnish man, traveled to Africa and south Europe : Cruise on the mediterranean sea for 10 days, on September • 5 days after return : Abrupt onset of fever (40°C) Loss of appetite, Headache Abdominal pain 1 episode of diarrheae • No medical history, no medication 22/04/2009 ESCAR, 19th ECCMID - Helsinki 3 3 Letaief –Spotted fever rickettsiosis Clinical case Continues… _______________________________________ •Physical examination at day 3 : –No signs of severe sepsis –Fever + generalized maculo-papular rash –Purpuric lesions on legs - Biological tests including : –blood smears (-), –blood cell count, normal •And Rickettsioses!!… SFGR ? 22/04/2009 ESCAR, 19th ECCMID - Helsinki 4 22/04/2009 ESCAR, 19th ECCMID - Helsinki 5 Which Rickettsia ? Order : Rickettsiales et Bartonellaceae (Bartonella + Rochalimaea) Tribu : Rickettsiaceae Anasplasmataceae Genus : Orientia Rickettsia O tsutsugamushi Typhus group (Spotted Fever Group) (scrub typhus) Epidemic typhus R.prowazekii R rickettsii RMSF Murine typhus R.typhi R. -
Tick-Borne Rickettsial Diseases
U R Tick-Borne Rickettsial Diseases Philippe PAROLA, MD, PhD WHO coll. Center for Rickettsioses and Other Arthropod Borne Bacterial Diseases Marseille, France Faculté de Médecine de Marseille France What is a rickettsial agent ? (1) Bacteria belonging to the order Rickettsiales Long time defined as: Gram négative Intracellular rods Stained by Gimenez staining Parola P, Paddock C, Raoult D. Tick-borne rickettsioses around the world: emerging diseases challenging old concepts. Clin Microbiol Rev 2005;18(4):719-56 What is a rickettsial agent ? (2) Molecular tools / taxonomic changes: • Rickettsia : spotted fever group and typhus group • Orientia tsutsugamushi (scrub typhus) • Anaplasma , Ehrlichia , Cowdria, Neorickettsia and Wolbachia Excluded from Rickettsiales Coxiella burnetii (Q fever) Bartonella sp. Raoult D, et al. Naming of Rickettsiae and rickettsial diseases. Ann N Y Acad Sci 2005;1063:1-12 Rickettsiales Rickettsiaceae Anaplasmataceae Rickettsia Orientia Anaplasma Ehrlichia Wolbachia Neorickettsia Spotted fever O. tsutsugamushi group Typhus group Ungroupped (Ancient) “Holosporaceae” Holospora Caedibacter Trojanella Endosymbionts Rickettsia Ticks Spotted fever group Spotted fevers mites Fleas Murine typhus Typhus group Epidemic typhus lice Some clinical aspects related to… the life and behaviors of ticks TICKS Haematophagous Acarins 2 - 30 mm 3 Families Ixodidae = Hard Ticks 694 species Argasidae = Soft Ticks 77 species Ixodidae Argasidae Nuttalliellidae: 1 species Parola et al. Clin Infect Dis. 2001; 32 (6): 897-928 . HARD TICKS Ixodes ricinus female male nymph larva 1 cm Parola et al. Clin Infect Dis. 2001; 32 (6): 897-928 . HARD TICKS Rhipicephalus sanguineus Hard ticks = 1 blood meal / stage Parola et al. Clin Infect Dis. 2001; 32 (6): 897-928 . HARD TICKS LIFE CYCLE Parola et al. -
Rickettsia and Rickettsial Diseases
9 Rickettsia and Rickettsial Diseases Xue-jie Yu and David H. Walker Department of Pathology, University of Texas Medical Branch, Galveston, Texas USA 1. Introduction Rickettsia prowazekii and R. rickettsii are HHS and USDA select agents (http://biosafety.utk.edu/pdfs/salist.pdf), and R. prowazekii is a category B bioterrorism agent as determined by the Centers for Disease Control and Prevention (CDC) (http://www.bt.cdc.gov/agent/agentlist-category.asp). The criteria for CDC category B bioterrorism agents are that the organisms are moderately easy to disseminate, cause diseases with moderate morbidity and low mortality and require specific enhancements of diagnostic capacity and enhanced disease surveillance. However, the case fatality ratios of both R. prowazekii and R. rickettsii may exceed the CDC bioterrorism agent category B level. Epidemic typhus caused by R. prowazekii and Rocky Mountain spotted fever (RMSF) caused by R. rickettsii can reach up to 60% fatalities without antibiotic treatment and 4% even with antibiotic treatment (Raoult et al., 2004). Rickettsia had been explored for biowarfare use. The former Soviet Union developed R. prowazekii as a biologic weapon in the 1930s (Alibek K and Handelman S, 2009). During World War II, the Japanese performed human experiments with rickettsial agents for purposes of biologic weapon development during their occupation of China (Harris S, 1992). Epidemic typhus, also known as louse-borne typhus, has been distributed worldwide, was one of the man’s major scourges and frequently played a decisive role in wars in Europe from the 15th through 20th centuries, thus affecting the course of European history (Conlon JM, 2007).