alert
breath
breathing
breathing support
care
cases
caucasian
clinic
coronavirus
covid19
critical
difficulties
disease
distress
doctor
emergency
equipment
face mask
health
health care worker
health worker
highly
hospital
icu
infected
intensive
mechanical
medical
mild symptoms
mouth piece
nasal mask
need
noninvasive
nurse
outbreak
oxygen
pandemic
patient
pneumonia
professional
respiratory
sarscov2
shortage
supplies
syndrome
technology
tired
ventilation
ventilator
worried