01
COVID-19 Global data statistics
Cumulative diagnosis:3739943,current diagnosis;2262305,death toll:260454(On May 7,2020)
02
The symptoms of COVID-19
Fever,fatigue and dry cough are the main manifestations.
03
Respiratory support for COVID-19
For mild to moderate patients, noninvasive ventilation may be considered when oxygen therapy is ineffective.
04
What is a ventilator,what does it do?
They can quickly restore blood oxygen saturation and relieve respiratory distress.