Coronavirus Disease 2019 ( COVID-19 ) spread globally in early 2020 ,
causing the world to face an existential health crisis .
Coronavirus Disease 2019 ( COVID-19 ) spread globally in early 2020 , causing the world to face an existential health crisis .
Coronavirus Disease 2019 ( COVID-19 ) spread globally in early 2020 , causing the world to face an existential health crisis .