keyword
MENU ▼
Read by QxMD icon Read
search

Rocky Mountain spotted fever

keyword
https://www.readbyqxmd.com/read/28365226/rocky-mountain-spotted-fever-in-mexico-past-present-and-future
#1
REVIEW
Gerardo Álvarez-Hernández, Jesús Felipe González Roldán, Néstor Saúl Hernández Milan, R Ryan Lash, Casey Barton Behravesh, Christopher D Paddock
Rocky Mountain spotted fever, a tick-borne zoonosis caused by Rickettsia rickettsii, is among the most lethal of all infectious diseases in the Americas. In Mexico, the disease was first described during the early 1940s by scientists who carefully documented specific environmental determinants responsible for devastating outbreaks in several communities in the states of Sinaloa, Sonora, Durango, and Coahuila. These investigators also described the pivotal roles of domesticated dogs and Rhipicephalus sanguineus sensu lato (brown dog ticks) as drivers of epidemic levels of Rocky Mountain spotted fever...
March 29, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28289173/child-neurology-rocky-mountain-spotted-fever-encephalitis
#2
Michael J Bradshaw, Kathryn B Lalor, NgocHanh Vu, Sumit Pruthi, Karen C Bloch
No abstract text is available yet for this article.
March 14, 2017: Neurology
https://www.readbyqxmd.com/read/28213544/isolation-and-characterization-of-a-unique-strain-of-rickettsia-parkeri-associated-with-the-hard-tick-dermacentor-parumapertus-neumann-in-the-western-united-states
#3
Christopher D Paddock, Michelle E J Allerdice, Sandor E Karpathy, William L Nicholson, Michael L Levin, Travis C Smith, Tom Becker, Robert J Delph, Robert N Knight, Jana M Ritter, Jeanine H Sanders, Jerome Goddard
In 1953, investigators at the Rocky Mountain Laboratories in Hamilton, Montana, described the isolation of a spotted fever group Rickettsia (SFGR) species from Dermacentor parumapertus collected from black-tailed jackrabbits (Lepus californicus) in northern Nevada. Several decades later, investigators characterized this SFGR by using mouse serotyping methods and determined that it represented a distinct rickettsial serotype, related closely to Rickettsia parkeri; nonetheless, the parumapertus agent was not further characterized or studied...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28097845/-fatal-case-of-rickettsiosis-in-a-toddler-from-southeastern-mexico
#4
César Lugo-Caballero, Karla Dzul-Rosado, Georgina Rodríguez-Moreno, Raúl Tello-Martín, Karina López-Ávila, Jorge Zavala-Castro
Rocky Mountain spotted fever is a disease caused by Rickettsia rickettsii, a bacteria transmitted by infected ticks. It is characterized by fever, exanthema, arthralgias and myalgias; but sometimes its clinical presentation is non specific. Due to its similarities with other exanthematic diseases like dengue or chikungunya, Rocky Mountain spotted fever is not a first line diagnosis, even though countries like Mexico show the ecologic and socioeconomic characteristics that favor its transmission, with a 30% mortality rate among pediatric patients...
February 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28055518/rocky-mountain-spotted-fever
#5
Jennan Phillips
The tick-borne disease Rocky Mountain spotted fever (RMSF) can have deadly outcomes unless treated appropriately, yet nonspecific flu-like symptoms complicate diagnosis. Occupational health nurses must have a high index of suspicion with symptomatic workers and recognize that recent recreational or occupational activities with potential tick exposure may suggest RMSF.
January 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28031280/proteolytic-cleavage-of-the-immunodominant-outer-membrane-protein-rompa-in-rickettsia-rickettsii
#6
Nicholas F Noriea, Tina R Clark, David Mead, Ted Hackstadt
Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, contains two immunodominant proteins, rOmpA and rOmpB, in the outer membrane. Both rOmpA and rOmpB are conserved throughout spotted fever group rickettsiae as members of a family of autotransporter proteins. Previously, it was demonstrated that rOmpB is proteolytically processed, with the cleavage site residing near the autotransporter domain at the carboxy-terminal end of the protein, cleaving the 168-kDa precursor into apparent 120-kDa and 32-kDa fragments...
March 15, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/27990680/retrospective-study-of-rocky-mountain-spotted-fever-in-children
#7
Rechelle Tull, Christine Ahn, Alyssa Daniel, Gil Yosipovitch, Lindsay C Strowd
BACKGROUND/OBJECTIVES: Rocky Mountain spotted fever (RMSF), a lethal tick-borne illness, is prevalent in the south central United States. Children younger than 10 years old have the greatest risk of fatal outcome from RMSF. The objective of the current study was to review pediatric cases of RMSF seen in the dermatology consult service and to evaluate dermatology's role in the diagnosis and management of this disease. METHODS: A retrospective review was performed of inpatient dermatology consultations at a tertiary care center in North Carolina from 2001 to 2011...
March 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/27929218/emerging-vector-borne-diseases
#8
REVIEW
Mark K Huntington, Jay Allison, Dilip Nair
Several mosquito-borne viral infections have recently emerged in North America; West Nile virus is the most common in the United States. Although West Nile virus generally causes a self-limited, flulike febrile illness, a serious neuroinvasive form may occur. Dengue is the most common vector-borne viral disease worldwide, and it has been a significant public health threat in the United States since 2009. Known as breakbone fever for its severe myalgias and arthralgias, dengue may cause a hemorrhagic syndrome...
October 1, 2016: American Family Physician
https://www.readbyqxmd.com/read/27880753/notes-from-the-field-community-based-prevention-of-rocky-mountain-spotted-fever-sonora-mexico-2016
#9
Anne Straily, Naomi Drexler, Denica Cruz-Loustaunau, Christopher D Paddock, Gerardo Alvarez-Hernandez
Rocky Mountain spotted fever (RMSF), a life-threatening tickborne zoonosis caused by Rickettsia rickettsii, is a reemerging disease in Mexico (1,2). R. rickettsii is an intracellular bacterium that infects vascular endothelium and can cause multisystem organ failure and death in the absence of timely administration of a tetracycline-class antibiotic, typically doxycycline. Epidemic RMSF, as described in parts of Arizona and Mexico, is associated with massive local infestations of the brown dog tick (Rhiphicephalus sanguineus sensu lato) on domestic dogs and in peridomestic settings that result in high rates of human exposure; for example, during 2003-2012, in Arizona the incidence of RMSF in the three most highly affected communities was 150 times the U...
November 25, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27861477/-complications-and-cause-of-death-in-mexican-children-with-rocky-mountain-spotted-fever
#10
Miguel Ángel Martínez-Medina, Adela Rascón-Alcantar
BACKGROUND: Rocky Mountain spotted fever is a life threatening disease caused by Rickettsia rickettsia, characterized by multisystem involvement. METHODS: We studied 19 dead children with Rocky Mountain spotted fever. All children who were suspected of having rickettsial infections were defined as having Rocky Mountain spotted fever by serology test and clinical features. Through the analysis of each case, we identified the clinical profile and complications associated to the death of a patient...
November 2016: Gaceta Médica de México
https://www.readbyqxmd.com/read/27815656/efficacy-of-tagetes-minuta-asteraceae-essential-oil-against-rhipicephalus-sanguineus-acari-ixodidae-on-infested-dogs-and-in-vitro
#11
Elis Maressa Gonçalves da Silva, Vinicius da Silva Rodrigues, Jaciara de Oliveira Jorge, Carolina Fonseca Osava, Matias Pablo Juan Szabó, Marcos Valério Garcia, Renato Andreotti
Ticks from Rhipicephalus sanguineus complex are widely distributed in the world and one species from this complex is the most common tick on dogs in Brazil, notably in urban areas. This tick is a vector of several diseases. Among others it transmits the agent of canine Ehrlichiosis, a major dog infectious disease and the agent of Rocky Mountain spotted fever. This tick can spread rapidly and develop intolerable infestations within no time. Currently tick control is done with acaricides and demand for such drugs has grown fast...
December 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27808070/geographic-eponyms-a-history-of-geography-in-medicine
#12
Maharra Hussain, Sanjay A Pai
Geographic eponyms have commonly been used in medical terminology, with diseases and medical entities being named after the place where the condition was discovered (e.g. Bombay Blood group) or invented (Jaipur Foot) or where the disease was first detected (Rocky Mountain Spotted fever) or where a consensus meeting has been held (Banff) or for other reasons (Argentina flag, Congo red stain). In 2015, the WHO decided to adopt a politically correct method to name infectious diseases in the future. We illustrate, in verse form, some of the places that have been used in medical terminology, over the centuries...
May 2016: National Medical Journal of India
https://www.readbyqxmd.com/read/27734445/rocky-mountain-spotted-fever
#13
Mark W Burnett
No abstract text is available yet for this article.
December 0: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/27696381/climate-change-and-the-epidemiology-of-selected-tick-borne-and-mosquito-borne-diseases-update-from-the-international-society-of-dermatology-climate-change-task-force
#14
REVIEW
Louise K Andersen, Mark D P Davis
Climate change refers to variation in the climate of a specific region or globally over time. A change has been reported in the epidemiology of tick- and mosquito-borne diseases in recent decades. Investigators have postulated that this effect may be associated with climate change. We reviewed the English-language literature describing changes in the epidemiology of specific tick- and mosquito-borne diseases, including the tick-borne diseases of Lyme disease, tularemia, Crimean-Congo hemorrhagic fever, Mediterranean spotted fever, and Rocky Mountain spotted fever and the mosquito-borne diseases of dengue, malaria, West Nile virus infection, Ross River virus disease, and Barmah Forest virus disease...
March 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/27677425/vectorial-competence-of-amblyomma-tonelliae-to-transmit-rickettsia-rickettsii
#15
E L Tarragona, J F Soares, F B Costa, M B Labruna, S Nava
The aim of this work was to test the vectorial competence of Amblyomma tonelliae (Ixodida: Ixodidae) to transmit Rickettsia rickettsii (Rickettsiales: Rickettsiaceae), the agent of Rocky Mountain spotted fever (RMSF). All parasitic stages of A. tonelliae were exposed to R. rickettsii by allowing each stage to feed on hosts inoculated with this pathogen. Thereafter, ticks were fed on uninfected hosts. All stages of A. tonelliae were able to acquire the R. rickettsii infection and maintain it by transstadial and transovarial transmission...
September 28, 2016: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/27616774/first-report-of-candidatus-rickettsia-amblyommii-in-west-coast-of-mexico
#16
Sokani Sánchez-Montes, César A Ríos-Muñoz, Deborah V Espinosa-Martínez, Carmen Guzmán-Cornejo, Miriam Berzunza-Cruz, Ingeborg Becker
We report the first case of "Candidatus Rickettsia amblyommii" detected in Amblyomma mixtum ticks on humans on the west coast of Mexico. This is the most western record of "Ca. R. amblyommii" in the Western Hemisphere, representing the first record for the western coast of the Americas. Even if the record is far from the previously known locations for the species it does not represent a new record regarding temperature, precipitation and topographic parameters. Since "Ca. R. amblyommii" antibodies have been detected in patients suspected of Rocky Mountain spotted fever, and the tick A...
October 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27598937/-rocky-mountain-spotted-fever-in-mexican-children-clinical-and-mortality-factors
#17
Gerardo Álvarez-Hernández, María Del Carmen Candia-Plata, Jesús Delgado-de la Mora, Natalia Haydeé Acuña-Meléndrez, Anabel Patricia Vargas-Ortega, Jesús David Licona-Enríquez
OBJECTIVE: Characterize clinical manifestations and predictors of mortality in children hospitalized for spotted fever. MATERIALS AND METHODS: Cross-sectional study in 210 subjects with a diagnosis of Rocky Mountain spotted fever (RMSF) in a pediatric hospital in Sonora, from January 1st, 2004 to June 30th, 2015. Data were analyzed using descriptive statistics and multivariate logistic regression. RESULTS: An upward trend was observed in RMSF morbidity and mortality...
June 2016: Salud Pública de México
https://www.readbyqxmd.com/read/27585218/the-eye-and-tick-borne-disease-in-the-united-states
#18
REVIEW
Saraniya Sathiamoorthi, Wendy M Smith
PURPOSE OF REVIEW: Tick-borne diseases are increasing in incidence and geographic distribution. Several diseases endemic to the United States have ophthalmic manifestations, including the most common tick-borne disease, Lyme borreliosis. As ocular complaints may lead a patient to seek medical evaluation, it is important to be aware of the systemic and ophthalmic manifestations of tick-borne diseases in order to make the correct diagnosis. RECENT FINDINGS: Vision-threatening ophthalmic manifestations are relatively common in Lyme disease and Rocky Mountain spotted fever...
November 2016: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27546608/cold-hardiness-and-influences-of-hibernaculum-conditions-on-overwintering-survival-of-american-dog-tick-larvae
#19
Andrew J Rosendale, David W Farrow, Megan E Dunlevy, Alicia M Fieler, Joshua B Benoit
Understanding how ticks survive the multitude of stresses experienced during winter is integral to predicting population dynamics and transmission of tick-borne pathogens. The American dog tick (Dermacentor variabilis), a predominant vector of Rocky Mountain spotted fever, overwinters in any of its post-egg life stages. In this study, we characterized the cold tolerance of larval D. variabilis and examined the effect of various acclimatory conditions on cold hardiness. Cold-shock survival during 2h exposure to various subzero temperatures was assessed and a lower lethal temperature of -20°C and a 50% mortality temperature near -16°C was established...
October 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27525249/differences-in-intracellular-fate-of-two-spotted-fever-group-rickettsia-in-macrophage-like-cells
#20
Pedro Curto, Isaura Simões, Sean P Riley, Juan J Martinez
Spotted fever group (SFG) rickettsiae are recognized as important agents of human tick-borne diseases worldwide, such as Mediterranean spotted fever (Rickettsia conorii) and Rocky Mountain spotted fever (Rickettsia rickettsii). Recent studies in several animal models have provided evidence of non-endothelial parasitism by pathogenic SFG Rickettsia species, suggesting that the interaction of rickettsiae with cells other than the endothelium may play an important role in pathogenesis of rickettsial diseases. These studies raise the hypothesis that the role of macrophages in rickettsial pathogenesis may have been underappreciated...
2016: Frontiers in Cellular and Infection Microbiology
keyword
keyword
68535
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"