IHHN: Infectious Hypodermal and Hematopoietic Necrosis

What does IHHN mean? The above is one of IHHN meanings. It may have other definitions. Please refer to the end of this passage.

IHHN: Infectious Hypodermal and Hematopoietic Necrosis

Definition in English: Infectious Hypodermal and Hematopoietic Necrosis