Investigation of the Prevalence of Covert Mortality Nodavirus (CMNV) in Shrimp from 2021 to 2022
Viral covert mortality disease (VCMD) in cultured shrimp is caused by covert mortality nodavirus (CMNV).The infected shrimp mainly die successively in the deep-water areas at the bottom of farming ponds, which is difficult to observe; as such, the term "covert mortality disease" was coined by Anal Beads local farmers.The disease is known as running