Eosinophilia is commonly seen with a:

Eosinophilia is commonly seen with a:

• A. Bacterial infection
• B. Parasitic infection
• C. Viral infection
• D. Hormonal disorder

Answer: (B)

Eosinophils rise when the body is fighting multicellular parasites, especially helminths. These white blood cells are activated by signals from a Th2-type immune response (notably IL-5) and release cytotoxic granules that damage or kill parasites. That targeted response is why eosinophilia is commonly seen with parasitic infections. Bacterial infections tend to increase neutrophils, viral infections raise lymphocytes, and hormonal disorders don’t typically cause a noticeable rise in eosinophils.

Eosinophils rise when the body is fighting multicellular parasites, especially helminths. These white blood cells are activated by signals from a Th2-type immune response (notably IL-5) and release cytotoxic granules that damage or kill parasites. That targeted response is why eosinophilia is commonly seen with parasitic infections. Bacterial infections tend to increase neutrophils, viral infections raise lymphocytes, and hormonal disorders don’t typically cause a noticeable rise in eosinophils.