PATHOLOGY

Detailed explanation-1: -Eosinophils are a type of white blood cell that help ward off bacteria, viruses, parasites, and other possible causes of infection. Eosinophil levels may rise when a person has an allergy, an infection, or leukemia.

Detailed explanation-2: -The most common parasitic infections associated with eosinophilia in refugees are the soil-transmitted helminths (trichuris, ascaris and hookworm), strongyloides, and schistosoma as well as many tissue-invasive parasites (e.g. parasites that migrate through human tissues as a part of their life cycle).

Detailed explanation-3: -Eosinophils make up about 1 to 4% of the leukocytes on average. They are involved in chronic inflammation, allergic reactions, and host deference against parasitic infections.

Detailed explanation-4: -Parasites tend to provoke marked eosinophilia when they or their products interact with immune effect or cells in tissues, chiefly during migration (e.g. trichinosis, ascariasis, gnathostomiasis, filarial parasites).