vestibular schwannomatosis [DOID:0111252]
A schwannomatosis characterized by bilateral vestibular schwannomas or a combination of unilateral vestibular schwannomas, non-vestibular schwannomas, meningiomas, ependymomas, and specific eye abnormalities that has_material_basis_in heterozygous mutation in the NF2 gene on chromosome 22q12.2. Eye abnormalities include juvenile subcapsular or cortical cataract, epiretinal membrane in a person less than 40 years old, and retinal hamartoma. This disease has been revised by international consensus. It was previously referred to as neurofibromatosis 2.
severe COVID-19 [DOID:0081013]
A COVID-19 that is characterized by any of (1) Oxygen saturation < 90% on room air, (2) Respiratory rate > 30 breaths/min in adults and children > 5 years old, 60 breaths/min in children < 2 months old, 50 in children 211 months old, and 40 in children 15 years old, or (3) signs of severe respiratory distress (accessory muscle use, inability to complete full sentences, and, in children, very severe chest wall indrawing, grunting, central cyanosis, or presence of any other general danger signs.