Do all parasites have eosinophilia

Not all parasites cause eosinophilia, but many do. Eosinophilia is commonly associated with helminth (worm) infections and some protozoan infections, as these parasites can trigger an immune response that elevates eosinophil levels. However, certain parasitic infections, particularly those caused by intracellular parasites like malaria, may not lead to eosinophilia. Therefore, while eosinophilia can be a helpful indicator of some parasitic infections, it is not universally present in all cases.