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Scrub typhus pneumonitis acquired through the respiratory tract in a laboratory worker.

We report a case of scrub typhus pneumonitis in a laboratory worker who apparently acquired it through the respiratory tract. The patient was suffering from fever, cough and dyspnea. He had both cervical and axillary lymphadenopathy, and hepatomegaly. A chest X-ray showed interstitial infiltrates. A diagnosis of scrub typhus was established upon isolation of Orientia tsutsugamushi. 12 days before the patient showed symptoms, he had purified O. tsutsugamushi proteins from infected cells using an ultrasonication method which could generate aerosols containing O. tsutsugamushi.

A new species of Leptotrombidium (Acari:Trombiculidae) collected in active rice fields in northern Thailand.

Leptotrombidium (Leptotrombidium) chiangraiensis Tanskul & Linthicum is described and illustrated as new from specimens collected from the rodents Rattus rattus (L., 1758), Rattus argentiventer (Robinson & Kloss, 1916), Rattus losea (Swinhoe, 1870), and Bandicota indica (Bechstein, 1800) in Chiangrai Province northern Thailand. The new species was collected in active rice fields and adjacent fruit plantation areas. The etiological agent of scrub typhus, Orientia (formerly Rickettsia) tsutsugamushi (Hayashi), has been isolated from patients who live and work in the same habitat where L. chiangr…

Risk Factors for Scrub Typhus, Murine Typhus, and Spotted Fever Seropositivity in Urban Areas, Rural Plains, and Peri-Forest Hill Villages in South India: A Cross-Sectional Study.

Scrub typhus and spotted fever group rickettsioses are thought to be common causes of febrile illness in India, whereas they rarely test for murine typhus. This cross-sectional study explored the risk factors associated with scrub typhus, tick-borne spotted fever, and murine typhus seropositivity in three different geographical settings, urban, rural, and hill villages in Tamil Nadu, South India. We enrolled 1,353 participants living in 48 clusters. The study included a questionnaire survey and blood sampling. Blood was tested for Orientia tsutsugamushi (scrub typhus), Rickettsia typhi (murine…

Ecological and microbiological diversity of chigger mites, including vectors of scrub typhus, on small mammals across stratified habitats in Thailand.

BACKGROUND: Scrub typhus, caused by a bacterial pathogen (Orientia spp.), is a potentially life-threatening febrile illness widely distributed in the Asia-Pacific region and is emerging elsewhere. The infection is transmitted by the larval stage of trombiculid mites ("chiggers") that often exhibit low host specificity. Here, we present an analysis of chigger ecology for 38 species sampled from 11 provinces of Thailand and microbiomes for eight widespread species. RESULTS: In total, > 16,000 individual chiggers were collected from 1574 small mammal specimens belonging to 18 species across four…

Гемофагоцитический лимфохистиоцитоз с неврологическими проявлениями у младенца с скрубским тифом: редкий смертельный случай.

Гемофагоцитический лимфохистиоцитоз (HLH) — синдром неконтролируемой активации иммунной системы, приводящий к фагоцитозу кровяных клеток и распространению гистиотов в твердых органах. ГЛХ может быть первичным или вторичным по отношению к инфекционным, аутоиммунным и злокачественным заболеваниям. Scrub tyhus — инфекционная болезнь, вызванная цицугамуши, передающаяся клещей. Болезнь варьируется от легкой лихорадки с сыпью до тяжелой многосистемной болезни. Скруб тифа редко ассоциируется со вторичным HLH. Мы сообщали о младенце с скрубским тифом, который продвинулся в развитии HLH с участием цент

Совпадение в аннотации оригинала
Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of unchecked activation of the immune system leading to phagocytosis of blood cells and proliferation of histiocytes in solid organs. HLH can be primary or secondary to infective, autoimmune and malignant conditions. Scrub typhus is an infective illness caused by Orientia tsutsugamushi, transmitted by mi…

Scrub typhus: pathophysiology, clinical manifestations and prognosis.

Scrub typhus is a zoonosis caused by the pathogen Orientia tsutsugamushi (O. tsutsugamushi). The disease has significant prevalence in eastern and Southeast Asia. Usually presenting as an acute febrile illness, the diagnosis is often missed because of similarities with other tropical febrile infections. Many unusual manifestations are present, and these are described in this review, together with an outline of current knowledge of pathophysiology. Awareness of these unusual clinical manifestations will help the clinician to arrive at an early diagnosis, resulting in early administration of app…

Severe scrub typhus confirmed early via immunohistochemical staining.

We describe a case of interstitial pneumonia that was confirmed as scrub typhus by immunohistochemical (IHC) staining of an eschar. When a patient presents with interstitial pneumonia accompanied by generalized lymphadenopathy on the thoracic CT scan, clinicians should suspect scrub typhus, especially when the patient has a history of travel to a scrub typhus-endemic area. IHC staining on an eschar revealed invasion by Orientia tsutsugamushi coccobacilli of the patient's sweat ducts and glands as well as vascular endothelium. IHC staining of an eschar could be used as an early-confirmation dia…

[Simultaneous detection of 7 important Rickettsiales pathogens by TaqMan-probe quantitative real-time PCR].

Objective: To establish and optimize a TaqMan-probe quantitative real-time PCR (qPCR) assay for the detection of 7 important Rickettsiales pathogens and simultaneous identification of the infection types. Methods: Based on the ompB gene of Rickettsia prowazekii, Rickettsia mooseri and spotted fever group rickettsiae, the groEL gene of Orientia tsutsugamushi, the 16S rRNA of Ehrlichia chaffeensis, the gltA gene of Anaplasma phagocytophilum and the com1 gene of Coxiella burnetii, we synthesized primers and TaqMan-probes and optimized the reaction system and reaction process to same solution. The…

Scrub typhus in the Northern Territory: exceeding the boundaries of Litchfield National Park.

Scrub typhus is recognised as an important differential diagnosis of fever, rash and sepsis in patients with a history of travel to Litchfield National Park in the Top End of the Northern Territory. All confirmed scrub typhus cases to date from the Northern Territory have visited the Park, but the presence of similar rainforest pockets elsewhere in the Top End suggested further infectious locations might be identified with increased tourism. We report a case of serologically confirmed Orientia tsutsugamushi infection in a man who had not been within Litchfield Park, but had visited another dis…

Afebrile scrub typhus infection with cardiac manifestation.

Scrub typhus is an acute febrile disease transmitted via bites from mite larvae (chigger) infected with Orientia tsutsugamushi. Arrhythmias, ischaemic changes and QT prolongation are some of the observed ECG abnormalities. The patient being reported presented with angina and was found to have sinus bradycardia with ST elevation in inferior leads and T wave inversion in lateral leads. His coronary angiography was normal. Further evaluation leads to the diagnosis of scrub typhus infection. Following doxycycline therapy, his ECG became normal. Afebrile scrub typhus infection with cardiac manifest…

Scrub Typhus Masquerading as Limbic Encephalitis.

Scrub typhus, an acute febrile infectious disease prevalent in the 'tsutsugamushi triangle', is a mite-born rickettsial zoonosis, caused by Orientia tsutsugamushi. The clinical presentation is protean and involves multiple organ systems of the body, including central and peripheral nervous systems. We report a 22-year-old previously healthy Indian woman who presented with clinical (confusion, excessive sleepiness, cognitive dysfunction and focal seizures) and neuroimaging features of limbic encephalitis. After exclusion of common infectious, autoimmune and paraneoplastic causes, she was diagno…

Scrub typhus causing neonatal hepatitis with acute liver failure-A case series.

Neonatal hepatitis with acute liver failure due to varied etiology including various infections is reported in the past. Scrub typhus as a cause of neonatal hepatitis has rarely been reported in literature. A high index of clinical suspicion is required for early diagnosis and timely treatment. Severity and prognosis of the disease varies widely because several different strains of Orientia tsutsugamushi exist with different virulence. Delayed diagnosis can result in complication and significant morbidity and mortality. Here, we report three cases of neonatal hepatitis with acute liver failure…

Peritonitis in patients with scrub typhus.

Various complications have been reported in scrub typhus cases including acute respiratory distress syndrome, encephalitis, pneumonia, peric … at scrub typhus should also be included in the differential diagnosis of peritonitis in areas where Orientia tsutsugamushi is endemic.

Redescription of Leptotrombidium (Leptotrombidium) imphalum (Acari: Trombiculidae), with observations on bionomics and medical importance in northern Thailand.

Leptotrombidium (Leptotrombidium) imphalum Vercammen-Grandjean & Langston is redescribed and illustrated. Specimens were collected from the rodents Rattus rattus, Rattus losea, and Bandicota indica in Chiangrai Province, northern Thailand. The species was found on hosts collected on dikes at the margins of rice fields and in adjacent fruit plantations and along irrigation canals, especially in areas covered with the grasses Imperata cylindrica (lalang grass) and Saccharum arudinaceum. The etiological agent of scrub typhus, Orientia (formerly Rickettsia) tsutsugamushi has been isolated from L. …

Церебеллит - редкое проявление лихорадки тифа.

Scrub tyhus () — рикетциальная болезнь, вызванная градией цутсугамуши, грамм-отрицательной коксобицилли, передаваемой через кусочек циггерного клеща. Скруб тифа имеет различные клинические проявления, часто изображающие либо простую фебрилальную болезнь, либо сложную многоорганическую дисфункцию. Неврологические осложнения в скруб тифах различны, но их точное число неизвестно. Церебеллит - это еще одно редкое неврологическое проявление, связанное с скрубским тифом. Здесь мы сообщаем о 26-летней женщине с серологическим подтвержденным тифом, у которой температура и тяжелая дисфункция мозга. МРТ

Совпадение в аннотации оригинала
Scrub typhus is a mite-borne rickettsial disease caused by Orientia tsutsugamushi, a gram-negative coccobacilli transmitted through the bite of chigger mite. Scrub typhus has diverse clinical manifestations, often presenting either as a simple febrile illness or as a complicated multi-organ dysfunction. Neurological complications in scrub typhus are diverse …

Erythematous Patch in Tsutsugamushi Disease - An Atypical Form of Eschar.

Tsutsugamushi disease is caused by the bacterium, Orientia tsutsugamushi and transmitted by chigger mites. In addition to the typical dark eschar, various forms of the eschar, including papules and vesicles, develop at chigger bite sites. Macular lesions were reported only in a human inoculation study; the inoculation lesions relapsed as erythematous macules or erythema-based papules concomitant with fever relapse. Herein, we report an erythematous patch as an inoculation lesion in two patients with tsutsugamushi disease, which, additionally, displayed a central small circle of 1 mm in diamete…

Autopsy case of acute liver failure due to scrub typhus.

Scrub typhus (Tsutsugamushi disease) is an acute febrile disease caused by infection with Orientia tsutsugamushi transmitted by mites. Although patients with scrub typhus commonly display mild liver injury, few die of acute liver failure. We describe herein an autopsy case of acute liver failure due to scrub typhus, which was complicated by disseminated intravascular coagulation and showed rapid progression of liver injury just before death. Histopathological findings revealed submassive hepatocellular necrosis, inflammatory cell infiltration in Glisson's capsules, and sporadic fibrin thrombi …

Acute sensorineural hearing loss and severe otalgia due to scrub typhus.

BACKGROUND: Scrub typhus is an acute febrile illness caused by Orientia tsutsugamushi. CASE PRESENTATIONS: We encountered a patient with sensorineural hearing loss complicating scrub typhus, and three patients with scrub typhus who complained of otalgia, which was sudden onset, severe, paroxysmal, intermittent yet persistent pain lasting for several seconds, appeared within 1 week after the onset of fever and rash. The acute sensorineural hearing loss and otalgia were resolved after antibiotic administration. CONCLUSION: When patients in endemic areas present with fever and rash and have sen…

Acute respiratory distress syndrome in Scrub typhus - An under recognized complication!

Scrub typhus is an acute febrile illness caused by the bacterium Orientia tsutsugamushi. It usually presents with high-grade fever, body aches, and skin rash. We report the case of a woman who presented with acute febrile illness, bilateral pneumonia, and severe hypoxemia. The presence of a typical eschar on the abdomen, made us suspect scrub typhus. Anti-O. tsutsugamushi Immunoglobulin M (IgM) antibody in the serum was detected in significant titers. She was treated with intravenous doxycycline and supplemental oxygen. Thus, scrub typhus should be considered in the differential diagnosis of f…