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Clinical and laboratory characteristics of patients with toxocariasis encountered at a tertiary care centre in North India

Toxocariasis is a neglected soil-transmitted helminthic infection caused by either Toxocara canis or Toxocara cati where humans get infected by accidental ingestion of embryonated eggs, and the definitive hosts are dogs and cats. This study aims to analyse the clinical and laboratory characteristics of Toxocara-infected patients and assessment of response to standard treatment with review of literature. The clinical details of patients with Toxocara serology positive for IgG antibodies by ELISA in 5 years (2013–2017) were retrospectively analysed. A total of 29 patients with clinical features and serology suggestive of Toxocara infection were evaluated. A complete history of 14 patients was available for the analysis. Majority (13/14; 96.5%) of cases were children <15 years, males (79%) and belonged to lower socioeconomic status (64.3%). The most common clinical presentation was fever (78.5%) with respiratory symptoms (57%) followed by gastrointestinal features (35.7%). All the patients had eosinophilia (range 8.3%–85%) and raised total IgE levels. Toxocariasis is more common in children, and the true prevalence may be underestimated. In endemic areas, Toxocara workup should be considered in patients with eosinophilia presenting with respiratory and gastrointestinal features.