AQP4 and viral encephalitis: Still, it's associated with relapsing and bilateral optic neuritis, brainstorm encephalitis, and acute disseminated encephalomyelitis (ADEM); MOGAD is more common in children than adults; 60% have CSF pleocytosis and can mimic the NMOSD syndrome seen in patients with the anti-AQP4 antibody [12,13].