In this paper we aim to add additional knowledge regarding the occurrence, origin and epidemiological features of the English sweating sickness. The English sweating sickness raged in five devastating epidemics with mortality rates between 30 and 50% between 1485 and 1551 throughout England, and on one occasion also affected mainland Europe, in 1529. The Picardy sweat, generally considered as the English sweating sickness' lesser deadly successor, flared up in France in 1718 and caused 196 localized outbreaks with varying severity all over France and neighboring countries up to 1861. The English sweating sickness has been the subject of numerous attempts to define its origin, but so far all efforts have failed due to lack of material, DNA or RNA, that - using modern techniques and knowledge - could shed light on its cause. Although the time frame in which the English sweating sickness occurred and the geographical spread of the outbreaks is generally known, we will demonstrate here that there was more to it than meets the eye. We found reports of cases of sweating sickness in years before, after and between the 1485, 1508, 1517, 1529 and 1551 epidemics, as well as reports of sweating sickness in Italy and Spain. CONCLUSION In spite of the fact that the English sweating sickness apparently has not caused casualties for a more than a century now, we suggest that -given the right circumstances- the possibility of re-emergence might still exist. The fact that up until today we have no indication concerning the causal pathogen of the English sweating sickness is certainly not re-assuring.
Objective: To investigate possible prognostic values of CD4+, CD8+ T-lymphocytes, CD4/CD8 ratio to clinical course of chickenpox in immunocompetent hosts. Materials and methods: We performed a prospective study which included 69 immunocompetent patients with chickenpox who were addmited to Clinic for infectious disease, Clinical Center University of Sarajevo, in a 18 month period. All patients were divided into two groups depending on clinical presentation on admission. Patients with mild clinical form were dedicated to „outpatient” group, and patients with moderate, severe or life-threatening clinical forms were dedicated to „hospitalized” group. Also 30 healthy volunteers are included in study as a control group. We analyzed values of CD4+, CD8+ percentage, CD4/CD8 ratio with comparison to clinical course of chickenpox. All specimens were taken in acute phase of illness. Results: Values of CD4+ percentage were significantly declined in a group of hospitalized patients, compared to group of outpatients and control group. Values of CD8+ percentage were higher in a group of hospitalized patients, while CD4/CD8 values were lower in comparison to a group of outpatients and control group. Conclusion: We found significant correlation between these parameters and clinical course of chickenpox.
Tularemia is a vector-borne zoonosis with a complex epidemiology caused by Francisella tularensis. F. tularensis is a non-motile, obligatory aerobic, facultative intracellular Gram-negative coccobacillus. The bacterium has a broad host range, i.e. mammals, birds and invertebrates. Two types (A, B) and four subspecies (F. tularensis subsp. tularensis (type A), F. tularensis subsp. holarctica (type B), F. tularensis subsp. mediasiatica and F. tularensis subsp. novicida.) are known today. Types A and B are of importance as they cause disease in humans and animals. Type A is present almost exclusively in North America and type B is found all over the Northern hemisphere. F. tularensis is considered to be a class A biological warfare agent, it is notoriously difficult to recognize infections in non-endemic regions and was produced as a weaponized agent by several countries in the 1960ties and 70ties. Humans can acquire tularemia by inhaling dust or aerosols contaminated with F. tularensis bacteria, this type of exposure can result in pneumonic tularemia, one of the most severe forms of the disease. especially farming involving machines that disperse remains of infected animals or carcasses. Rarely, water can become tularemia contaminated through contact with infected animals. Humans who drink contaminated and untreated water may contract oropharyngeal tularemia. The tularemia outbreak in B&H in 1995 showed an unusual number of oropharyngeal cases. As all aspects of this particular tularemia epidemic were not thoroughly investigated and the possible intentional use of agents of biological warfare remained a possibility, we reviewed all available data in order to assess whether the outbreak was natural. Correspondence to: Mirsada Hukić, Institute for Biomedical Diagnostic and Research Nalaz, Sarajevo Bosnia and Herzegovina, Tel: +387-33-651 371; E-mail: mirsadahukic@yahoo.com Received: May 23, 2017; Accepted: June 20, 2017; Published: June 22, 2017 Introduction Tularemia is a vector-borne zoonosis with a complex epidemiology caused by Francisella tularensis. F. tularensis is a non-motile, obligatory aerobic, facultative intracellular Gram-negative coccobacillus. The bacterium has a broad host range, i.e. mammals, birds and invertebrates. Four subspecies are known today; F. tularensis subsp. tularensis (type A), F. tularensis subsp. holarctica (type B), F. tularensis subsp. mediasiatica and F. tularensis subsp. novicida. Types A and B are of importance as they cause disease in humans and animals. Type A is present almost exclusively in North America and type B is found all over the Northern hemisphere [1]. Infections due to tick and deer fly bites usually take the form of ulceroglandular or glandular tularemia. F. tularensis bacteria can also be transmitted to humans via the skin when handling infected animal tissue. This can occur when hunting or skinning infected rodents like rabbits, muskrats and other rodents. Many animals have also been known to become infected and clinically ill from tularemia. Domestic cats are very susceptible and can transmit the bacteria to their owners. Therefore, care should always be taken when handling sick or dead animals. Infection due to handling animals can result in glandular, ulceroglandular and oculoglandular tularemia. Eating of under-cooked meat of infected animal’s tularemia can also result in oropharyngeal tularemia [2]. Humans can acquire tularemia by inhaling dust or aerosols contaminated with F. tularensis bacteria, this type of exposure can result in pneumonic tularemia, one of the most severe forms of the disease. especially farming involving machines that disperse remains of infected animals or carcasses. Rarely, water can become tularemia contaminated through contact with infected animals. Humans who drink contaminated and untreated water may contract oropharyngeal tularemia [3]. Transmission from person to person has so far not been reported. Inhalational tularemia following intentional release of a virulent strain of F. tularensis would have the greatest adverse human Hukić M (2017) Recognizing the possibility of bioterrorism in the face of emerging and reemerging zoonotic pathogens in Bosnia and Herzegovina during the war (1992-1995) Volume 1(3): 2-7 Virol Res Rev, 2017 doi: 10.15761/VRR.1000113 consequence because of its very high infectivity if delivered as an aerosol. It has been estimated that an aerosol dispersal of 50 kg of virulent F. tularensis over a metropolitan area with 5 million inhabitants would result in 250 000 incapacitating casualties, including 19,000 deaths. Outbreaks of pneumonic tularemia, particularly in low incidence areas, should prompt consideration of bioterrorism. F. tularensis has long been considered a potential biological weapon. It was one of the agents studied the Japanese germ warfare research units in Manchuria, China between 1932 and 1945; it was also considered for military purposes in the West [4]. An outbreak of tularemia reported in Soviet and German soldiers during the second world war may have been the result of intentional release [5]. F. tularensis has been studied, weaponized and stockpiled by several countries, including Japan, the USSR and the US [4]. Pathogenesis Francisella tularensis can infect humans through the skin, mucous membranes, gastrointestinal tract, and lungs. The major target organs are the lymph nodes, lungs and pleura, spleen, liver, and kidney. Bacteremia is common in the early phase of infection. The initial tissue reaction to infection is a focal, suppurative necrosis. Suppurative lesions become granulomatous, typical of other granulomatous conditions, i.e. tuberculosis or sarcoidosis. Humans with inhalational exposure also develop early in the course of illness hemorrhagic signs and inflammation of the airways which usually evolves to bronchopneumonia. Clinical manifestations The primary clinical forms of tularemia vary in severity and presentation according to virulence of the infecting organism, the dose, and way of administration. Primary disease presentations can be glandular, ulceroglandular, oculoglandular, oropharyngeal, pneumonic, typhoidal, and septic forms. The onset of tularemia is usually abrupt, with fever (38°C-40°C), headache, chills and rigors, generalized body aches (lower back pain) and sore throat. A dry or slightly productive cough frequently occurs with or without signs of pneumonia. Nausea, vomiting, and diarrhea sometimes occur. Sweats, fever and chills, malaise, progressive weakness and weight loss characterize the continuing illness. In untreated tularemia, symptoms often persist for several weeks or months. Any form of tularemia may be complicated by hematogenous spread, resulting in secondary pleura-pneumonia, sepsis, and meningitis. Prior to the administration of antibiotics, the overall mortality with the more severe type A strains is of 5% to 15%, and in the case of untreated pneumonic and severe systemic forms fatality rates as high as 30% to 60% were reported. Type B infections are in contrast rarely fatal. Ulceroglandular tularemia, after handling a contaminated carcass or due to an infective arthropod bite, a local cutaneous papule appears at the inoculation site together with the onset of generalized symptoms, becomes pustular, and ulcerates within a few days. The ulcer is tender may show an eschar. Antibiotic treatment does not prevent the affected nodes from becoming fluctuant and rupture. Oculoglandular tularemia, which follows direct contamination of the eye, ulceration occurs on the conjunctiva, accompanied by pronounced chemosis, vasculitis, and regional lymphadenitis. Glandular tularemia is characterized by lymphadenopathy without an ulcer. Oropharyngeal tularemia is acquired by drinking contaminated water, ingesting contaminated food, or by inhaling contaminated droplets or aerosols. Affected persons may develop stomatitis but more commonly develop exudative pharyngitis or tonsillitis, sometimes with ulceration. Tularemia pneumonia is the direct result of inhaling contaminated aerosols. Inhalational exposures commonly result in an initial clinical picture of systemic illness without prominent signs of respiratory disease. The earliest pulmonary radiographic findings of inhalational tularemia may be peribronchial infiltrates, typically advancing to bronchopneumonia in one or more lobes. Pulmonary infection can sometimes rapidly progress to severe pneumonia, respiratory failure, and death. Lung abscesses occur infrequently. Typhoidal tularemia is used to describe systemic illness when the site of inoculation or the localization of infection is unclear. Tularemia sepsis is severe and potentially fatal. As in the case of typhoidal tularemia, fever, abdominal pain, diarrhea, and vomiting may be prominent early in the course of illness. The patient typically appears toxic and may develop confusion and coma. Unless treated promptly, septic shock and other complications of systemic inflammatory response syndrome may develop with hemorrhagic signs, acute respiratory distress syndrome and organ failure [4]. The war in Bosnia and Herzegovina (B&H) (1992-1995) As in all conflicts, the inhabitants of Bosnia and Herzegovina were under extreme pressure during the war that took place 1992-1995. Due to the nature of the conflict that sometimes involved hostilities amongst neighbors, there was minimal respect for human rights and civilians, children and old people as well as soldiers suffered the consequences. In particular the weakest individuals, namely women and children suffered the most. Horrific ethnic cleansing campaigns between 1992 and the end of 1995 killed thousands and violently displaced more than two million people in much of B&H. International intervention into the Bosnian conflict led finally to a peace agreement in late 1995 (the Dayton Accords). The Dayton agreement finally ended the war in B&H. In 1995, the conflict between multiple factions was ag
Aim: The aim of this study was to examine the impact of antibiotic consumption on development of antimicrobial resistance in Acinetobacter baumannii. Material and Methods: The study was conducted in University Clinical Center of Sarajevo. In our retrospective study Acinetobacter baumannii isolated in period from July 1st 2009 to December 31st 2012. Isolates were detected from different clinical samples including urine, wound swab, blood, bronchial aspirate and other samples which were collected from patients situated on various hospital wards. Clinical isolates belonged to one per patient in a given period of time. Results: Antimicrobial resistance was interpreted according to CLSI breakpoints. Consumption of antibiotics was analyzed according to recommendations of the ESAC-Net and current Acinetobacter baumannii classification. Pearson’s correlation showed a positive correlation between gentamicin consumption and emerging of resistance (p = 0.023). Conclusion: Increase in the antimicrobial use was followed with an increase in resistance of Acinetobacter baumannii isolates. Monitoring of antibiotic resistance and consumption is of a great importance in order to reduce the emergence and spread of antimicrobial resistant organisms in the health care settings.
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