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Our study assesses the influence of illness duration before establishing the diagnosis of brucellosis and initiating therapy on patients' main clinical characteristics and outcome in an endemic area. The medical files of 297 patients with brucellosis were retrospectively analysed. They were divided into four groups according to illness duration before initiating therapy: <10 days; 11-30 days; 31-90 days; and >90 days. There were significant differences in the occurrences of fever ( P  = 0.019), focal forms ( P  = 0.026), spondylitis ( P  = 0.034) and therapeutic failures ( P  = 0.006) between the groups. Duration of >30 days before treatment initiation is responsible for more serious clinical presentation and outcome, whereas illness duration of >90 days further worsens the clinical progression in human brucellosis.

Aim: To present our 10-year clinical experience with brucellosis patients at the University Clinic for Infectious Diseases and Febrile Conditions in Skopje, Republic of Macedonia., Methods: A total of 550 patients with brucellosis treated between 1998 and 2007 were retrospectively assessed for their demographic, epidemiological, and clinical characteristics and outcomes., Results: Of the 550 patients, 395 (72%) were male. The median age was 34.5 years (range, 1-82). Direct contact with infected animals was recorded in 333 (61%) patients and positive family history in 310 (56%). The most frequently seen symptoms were arthralgia (438, 80%), fever (419, 76%), and sweating (394, 72%). The most common signs were fever and hepatomegaly, which were verified in 357 (65%) and 273 (50%) patients, respectively. Focal brucellosis was found in 362 patients (66%) and osteoarticular in 299 (54%). Therapeutic failures were registered in 37 (6.7%) patients. Of the 453 (82%) patients who completed a follow-up period of at least 6 months, relapses occurred in 60 (13%)., Conclusion: Due to non-specific clinical manifestation and laboratory parameters, brucellosis should be considered one of the differential diagnoses of any patient suffering from obscure involvement of various organs in a brucellosis-endemic region. High percentage of relapses and therapeutic failures in spite of the use of currently recommended therapeutic regimens indicates the seriousness of this zoonosis and the need to control it.

The aim of the study was to determine the evolution and outcome of human brucellosis in an endemic region in relation to time interval. Retrospective analysis was employed to compare demographic, epidemiological, clinical, laboratory features and the outcome of patients with brucellosis, treated at University Department of Infectious Diseases in Skopje during two different periods of time. A series of 159 patients were studied in the first (1990-1991) and 138 in the second (2003-2005) study period. Patients treated in the second period were older (34.6+/-20.9 vs. 30.0+/-17.7 years; P=0.041) and acquired brucellosis less frequently on ingestion of incriminated food (34.8% vs. 47.2%; P=0.031). Focal forms were more evident in the second period (66.7% vs. 50.3%; P=0.004), mainly due to osteoarticular localization. Post-treatment follow up was more efficient in the second group (76.1% vs. 61%; P=0.005). There was no difference according to disease outcome in spite of different therapeutic trials during the two study periods. In conclusion, the established differences showed an improvement in the understanding of the disease by the general population as well as upgrading of some aspects considering medical activities. Nevertheless, this endemic region still lacks the most important measure, i.e. development and implementation of an appropriate national program for efficient control of the disease.

Objective: The aim of this study was to describe some demographic, clinical and laboratory characteristics, and to evaluate the outcome, in patients with brucellosis in an endemic area in the Balkan Peninsula, and to reveal the differences between patients with and without occupational exposure., Methods: The study was carried out at the Clinic for Infectious Diseases in Skopje over a period of seven years. Four hundred and eighteen patients with brucellosis were enrolled and classified into two groups: patients with (251) and without (167) occupational exposure., Results: Two hundred and twenty-eight (54.5%) of the patients had a positive family history. The most common clinical manifestations were arthralgia (81.8%), sweating (71.5%), localized disease (67.7%) and subjective fever (68.4%), whereas elevated values of C-reactive protein (78.9%) and circulating immune complexes (75.8%) were the most frequent laboratory abnormalities. Relapses and therapeutic failure were registered in 16.2% and 10.4%, respectively. Male gender, positive family history and arthralgia were more prevalent in those with occupational exposure, while pediatric age, fever and anemia were inversely correlated with occupational exposure., Conclusions: Human brucellosis is a serious problem in the Republic of Macedonia presenting with a high percentage of localized forms, relapses and therapeutic failures. The risk factor for acquiring the disease had no influence on the outcome.

Aim: To describe the frequency, types, clinical characteristics, diagnostic tools, and outcome of osteoarticular brucellosis., Methods: The study was carried out at the Hospital for Infectious Diseases in Skopje between January 1998 and December 2002. Three hundred and thirty one consecutive patients with brucellosis were enrolled and prospectively assessed according to a previously designed protocol. Brucellosis was diagnosed on the basis of clinical signs, and confirmed by the detection of specific antibodies at significant titers., Results: One hundred and ninety six (59.2%) patients had osteoarticular involvement. Peripheral arthritis was found in 119 (60.7%) patients, followed by sacroiliitis in 60 (30.6%) and spondylitis in 56 (28.6%) of them. In 86 (43.9%) patients, osteoarticular changes were localized in two or more sites. The patients with osteoarticular brucellosis showed more prolonged illness prior to diagnosis and higher erythrocyte sedimentation rate, compared to those without osteoarticular localization. There were no other significant demographic, epidemiological, clinical, and laboratory differences between the two groups. Relapses occurred in 28 (17.5%) and therapeutic failure in 25 (12.8%) patients, 24 of them with spondylitis., Conclusions: Osteoarticular brucellosis was a common form of focal brucellosis and the most unfavorable outcome was seen in patients with spondylitis.

Prospectively were studied clinical characteristics, diagnostic tools and outcome in 33 patients with hip arthritis during brucellosis that were treated at the clinic for infectious diseases in Skopje, Republic of Macedonia (FYROM). Thirty-six hip involvements were noted. The patient's age was mean (SD) 23.7 (19.9) years, 18 were male. Twenty-one of them acquired the disease through direct contact with infected animals. In five patients, hip arthritis was the unique manifestation of the disease. Concomitant affection of other osteoarticular localisation was found in 18 patients. The diagnosis of hip arthritis was achieved using radionuclide bone scan and ultrasound examination in 17 and 16 cases, respectively. During the follow-up period, six relapses, three therapeutic failures and one sequela were noted. Brucellar aetiology should be considered in all patients from endemic areas, who have manifest symptoms of hip joint involvement.