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Neurological manifestation of Brazilian spotted fever in childhood.

Rocky Mountain Spotted Fever is a rickettsial disease caused by the bacteria Rickettsia rickettsii. In Brazil, the disease is known as Brazilian spotted fever (BSF), being the most significant tick-borne disease in the country. Among the affected patients, only 5% of cases occur in children aged one to nine years. Typical symptoms of the disease are fever, rash, headache and digestive symptoms. Neurological manifestations such as seizures, aphasia and hemiparesis have been described in few patients. This study aimed to describe the case of an infant diagnosed with BSF who presented severe sign…

Secondary syphilis presenting as fever of unknown origin.

A thirty-eight year-old male presented with a seven-week history of persistent fever accompanied by recurrent night sweats, chills, arthralgias, headache, and chest tightness.Initial laboratory testing showed non-specific elevation of inflammatory markers, but was otherwise unremarkable.A palmar rash developed one week later, prompting testing for syphilis. Fluorescent treponemal antibody absorption (FTA-ABS) and rapid plasma reagin (RPR) tests were both positive.Penicillin G was administered and the patient recovered uneventfully.Our case emphasizes the need for increased syphilis screening t…

Coxiella burnetii (Q fever) exposure in wildlife professionals.

INTRODUCTION: Although occupational exposure to Coxiella burnetii has been studied previously, the zoonotic risk in wildlife environments remains unclear and has yet to be fully established. METHODS: Accordingly, the present study aimed to serologically assess professionals with daily contact with free-living and captive wildlife in Paraná State, Brazil, along with the potential associated risk factors for C. burnetii exposure. RESULTS: Overall, 25 out of 309 (8.1%) wildlife professionals were seropositive, including 6/54 (11.1%) national and 7/125 (5.6%) state park employees, 6/92 (6.5%) zo

Rat-Bite Fever due to the genus Streptobacillus.

Rat-bite fever (RBF) is a zoonotic infection and systemic febrile illness transmitted to humans by Rattus spp. contacts following a scratch, bite, or touching excrement, such as urine, feces, and oral secretions. Infection with members of the genus Streptobacillus is the most common cause of this infectious disease. In this review article, we updated the knowledge on the RBF caused by the genus Streptobacillus based on the isolation and identification methods, virulence factors, clinical signs, differential diagnoses, antibiogram, treatment, geographical distribution, and epidemiology. Moreove…

Familial Mediterranean Fever Complicated By Massive Cardiac Tamponade.

Familial Mediterranean fever (FMF) is a hereditary, autosomal recessive auto-inflammatory disorder characterized by recurrent attacks of fever and serositis. While arthritis, pleuritis, peritonitis, and pericarditis are common in FMF, large pericardial effusions with cardiac tamponade as a sequelae of FMF are considered rare.  We report a case of an 83-year-old female with a history of FMF who presented with chest pain. She was found to have acute pericarditis complicated by hemodynamically significant pericardial tamponade that was subsequently treated with an urgent pericardiocentesis follow…

African swine fever virus - variants on the rise.

African swine fever virus (ASFV), a large and complex DNA-virus circulating between soft ticks and indigenous suids in sub-Saharan Africa, has made its way into swine populations from Europe to Asia. This virus, causing a severe haemorrhagic disease (African swine fever) with very high lethality rates in wild boar and domestic pigs, has demonstrated a remarkably high genetic stability for over 10 years. Consequently, analyses into virus evolution and molecular epidemiology often struggled to provide the genetic basis to trace outbreaks while few resources have been dedicated to genomic surveil…

Dengue fever ophthalmic manifestations: A review and update.

Dengue fever, the most common arbovirus disease, affects an estimated 390 million people annually. Dengue virus (DENV) is an RNA virus of the Flaviviridae family with four different serotypes. Dengue haemorrhagic fever is the deadliest form of dengue infection and is characterised by thrombocytopaenia, hypotension, and the possibility of multi-system organ failure. The mechanism hypothesised for DENV viral replication is intrinsic antibody-dependent enhancement, which refers to Fcγ receptor-mediated viral amplification. This hypothesis suggests that the internalisation of DENV through the Fcγ …

Autochthonous Dengue Fever in 2 Patients, Rome, Italy.

Since August 2023, outbreaks of dengue virus (DENV) infection have occurred in Italy. We report 2 autochthonous case-patients and their extended follow-up. Despite persistent DENV detected in blood by PCR, results for antigenomic DENV RNA were negative after day 5, suggesting that a 5-day isolation period is adequate to avoid secondary cases.

Предположение эволюционного времени Омского геморрагического лихорадочного вируса.

До 2020 года в Генбанке существовало только три оригинальных полных последовательности генома (CG) нуклеотида Омского геморрагического вируса лихорадки (OHFV). По этой причине оценки эволюционных темпов и расхождений во времени, о которых говорится в литературе, основывались на последовательности генов Е, но, в частности, без временной оценки сигналов, так что их надежность является неясной. По состоянию на июль 2022 года было опубликовано 47 последовательностей CG OHFV, что позволяет проверить временной сигнал в данных и определить беспристрастную и надежную скорость замещения и расходящиеся

Совпадение в аннотации оригинала
Until 2020, there were only three original complete genome (CG) nucleotide sequences of Omsk hemorrhagic fever virus (OHFV) in GenBank. For this reason, the evolutionary rate and divergence time assessments reported in the literature were based on the E gene sequences, but notably without temporal signal evaluation, such that their reliability is unclear. As…

Rocky Mountain Spotted Fever Associated With Cardiac Arrhythmias.

Rickettsial infection, known as Rocky Mountain spotted fever, is a challenging diagnosis as early clinical manifestations are difficult to distinguish from viral illnesses. Symptoms at presentation depend on the organs involved, ranging from a skin rash as evidence of vascular damage to prerenal azotemia, respiratory failure, hepatic injury, or encephalitis. We report an unusual case of an otherwise healthy 83-year-old female whose serologies tested positive for Rickettsia rickettsii, which led to cardiac dysrhythmia, i.e., the new onset of atrial fibrillation associated with conversion pauses…

Q fever - immune responses and novel vaccine strategies.

Q fever is a zoonotic disease caused by the bacterium Coxiella burnetii. It is an occupational risk for employees of animal industries and is associated with contact with wildlife and domestic animals. Although Q fever infection may be asymptomatic, chronic sequelae such as endocarditis occur in 5% of symptomatic individuals. Disease outcomes may be predicted through measurement of immune correlates. Vaccination is the most efficient method to prevent Q fever. Currently, Q-VAX is the only licenced human vaccine. Q-VAX is highly effective; however, individuals previously exposed to C. burnetii …

Seroepidemiology for Enteric Fever: Emerging Approaches and Opportunities.

Safe and effective typhoid conjugate vaccines (TCVs) are available, but many countries lack the high-resolution data needed to prioritize TC … on-from cross-sectional serosurveys. These new tools open up many possible applications for enteric fever seroepidemiology, including generating high-resolution surveillance data, monitoring vaccine impact, and integrating with other serosurveillance initiatives. Challenges remain, including distinguishing Salmonella Typhi from Salmonella Paratyphi infe …

Tularemia Presenting Solely with Cervical Lymphadenopathy and Fever.

A 52-year-old German female presented with cervical lymphadenopathy and fever. Despite the initial symptom-presentation leading to the consideration of sarcoidosis, lymphoma, tuberculosis, and toxoplasmosis, an extensive serologic and histo- and molecular pathologic workup eventually indicated a likely diagnosis of tularemia. This case brings to light that tularemia is a diagnostic challenge and requires high reliance on the epidemiological context thorough patient history, and an extensive interdisciplinary diagnostic workup.

[Problems of specific prevention of African swine fever].

This review presents the current state of the problem of development and application of the specific prevention of African swine fever (ASF) with a brief description of its etiology and pathogenesis. The unique nature of the ASF virus (ASFV) determines some limitations and the complexity of solving the problem of vaccine development. Such situation stimulated the development of highly specific diagnostic methods for rapid and accurate detection of the ASFV. In this regard, results of studies, including our own, concerning the comparative analysis of the genome of vaccine and virulent strains o…

[Acute rheumatic fever (ARF) in an adult male].

Acute rheumatic fever (ARF) results from an autoimmune reaction following Streptococcus pyogenes-induced tonsilitis. It is a disease that has become uncommon in Germany and is rare in adults. Treatment recommendations are controversial in this age group. The case of a 29-year-old male with ARF following tonsillitis due to S. pyogenes treated with penicillin and amoxicillin/clavulanic acid in the setting outpatient is reported. After 6 weeks, the patient presented to hospital with elevated body temperature, painless red-livid skin lesions, and polyarthritis. Laboratory results showed elevated i…

Therapeutics for rheumatic fever and rheumatic heart disease.

The goals of acute rheumatic fever therapy are to relieve symptoms, mitigate cardiac valve damage and eradicate streptococcal infection. Preventing future recurrences requires long-term secondary antibiotic prophylaxis and ongoing prevention of Streptococcus pyogenes (group A streptococcus) infections The recommended regimen for secondary prophylaxis comprises benzathine benzylpenicillin G intramuscular injections every four weeks. For patients with non-severe or immediate penicillin hypersensitivity, use erythromycin orally twice daily The goals of therapy for rheumatic heart disease are to p…