Virus.
Among the options given—strep throat, tooth decay, and tetanus—none of these are caused by a virus. Strep throat is caused by bacteria (Streptococcus), tooth decay is often due to bacterial activity, and tetanus is caused by the bacterium Clostridium tetani. Therefore, none of the mentioned conditions is viral in nature.
John D. Drennan has written: 'DNA vaccines encoding the glycoprotein genes of spring viremia of carp virus, snakehead rhabdovirus, or infectious hematopoietic necrosis virus induce protective immunity in rainbow trout (Oncorhynchus mykiss) against an infectious hematopoietic necrosis virus lethal challenge' -- subject(s): Glycoproteins, Infections, DNA vaccines, Rainbow trout
Scott Edward LaPatra has written: 'Strain differentiation and detection of infectious hematopoietic necrosis virus' -- subject(s): Virus diseases, Rhabdoviruses, Rainbow trout, Pacific salmon
The noun doesn't change in possessive form. A trout is still a trout regardless of whether it's a dead trout, a delicious trout, your trout, my trout, or his trout.
The form 'trouts' is the plural for types of trout. The noun for trout is both singular and plural for the fish. For example: The fish: Look at all those trout! The types: The trouts we serve are river trout and brown trout.
Rainbow trout
The noun "trout" is both singular and plural.For example: "I caught a bunch of trout" and "I caught one trout".
The plural of trout IS trout.
young trout
because a trout is a fish! s
A baby trout is still called a trout
The noun 'trout' is used as a singular or plural, for example:Jim caught a trout on his first try. (singular)The cafe will buy all of the trout we can catch. (plural)