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A Rare Case of Acute Rheumatic Fever Diagnosed After Recent Travel Abroad
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DOI：10.3390/idr18040079.png)
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Abstract
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Background: Acute rheumatic fever (ARF) is a clinical syndrome triggered by group A streptococcal (GAS) infections and characterized by fever, carditis, and arthritis as its main manifestations. Diagnosis relies on the revised Jones criteria. We report a rare case of ARF diagnosed in Switzerland. Case Presentation: An 18-year-old woman presented to the emergency department five days after returning from a one-week stay in Egypt with intermittent fever and a transient sore throat, followed by migratory joint pain. Laboratory testing revealed leukocytosis, elevated C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR). Chest X-ray, urine analysis, and (travel-associated) pathogen-testing (Epstein–Barr virus, Cytomegalovirus, human immunodeficiency virus, Malaria, Dengue, Zika, Chikungunya) were unremarkable. Blood cultures remained negative. Initially, a viral respiratory infection was suspected and symptomatic treatment established. Days later the patient was re-evaluated due to persistent symptoms. Leukocyte count (Lc) and CRP further increased and subcutaneous nodules appeared. The antistreptolysin-O (ASO)-titer was elevated more than three times higher than the normal upper limit and proofed serological evidence of a preceding streptococcal infection (GAS throat culture had not been performed). ARF was diagnosed according to the Jones criteria. Treatment with amoxicillin and a high dose of acetylsalicylic acid (ASA) led to a rapid clinical improvement. Secondary prophylaxis with depot penicillin (benzathine penicillin G; 1.2 million units; once monthly) was initiated to prevent rheumatic heart disease. Conclusions: This case highlights a rare occurrence of ARF following travel to Egypt, with probable acquisition of group A streptococcal infection during the trip. It emphasizes consideration of ARF even in Western countries with low ARF-prevalence if clinical history is suggestive. Early recognition and initiation of antimicrobial and anti-inflammatory therapy is crucial to prevent cardiac involvement. To the best of our knowledge, this represents one of the first cases diagnosed in Switzerland in the past 20 years.
Keywords:
rheumatic fever
arthralgia
<i>GAS</i>-pharyngitis
penicillin
secondary prophylaxis
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