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{{Virusbox
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▲| species = '''''Decapod penstyldensovirus 1'''''
| synonyms = Infectious hypodermal and hematopoietic necrosis virus
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'''Infectious hypodermal and hematopoietic necrosis''' (IHHN) is a [[virus|viral]] disease of [[Penaeidae|penaeid shrimp]] that causes mass mortality (up to 90%) among the Western blue shrimp (''[[Penaeus stylirostris]]'') and severe deformations in the Pacific white shrimp (''[[Whiteleg shrimp|P. vannamei]]''). It occurs in Pacific farmed and wild shrimp, but not in wild shrimp on the [[Atlantic Ocean|Atlantic]] coast of the Americas. The [[shrimp farm|shrimp-farming]] industry has developed several broodstocks of both ''P. stylirostris'' and ''P. vannamei'' that are [[disease resistance|resistant]] against IHHN infection.<ref>[[World Organization for Animal Health]] (OIE): ''Aquatic Manual'', 4th Ed., 2003. [http://www.oie.int/eng/normes/fmanual/A_00052.htm Section 4.1.6]. {{ISBN|92-9044-563-7}}.</ref>
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