👉 Nucleopolyhedrovirus is a virus that infects cells in the nervous system, specifically neurons and spinal cord neurons, causing neurodegenerative diseases. It is characterized by its ability to disrupt neuronal cell function through disruption of protein synthesis and the release of toxic products into the brain. This disease primarily affects elderly individuals with multiple sclerosis (MS) or other degenerative conditions where the immune system mistakenly attacks and destroys healthy nerve cells.