Why has mortality decreased in more severely ill COVID19 patients?

Since the beginning of the pandemic, COVID-19 mortality has decreased significantly among patients in intensive care. What do the studies tell us, and what is the possible reason? explains Dr. Adnan Begović, a specialist in intensive care and pulmonary diseases. You can follow the series on the YouTube channel "60 Seconds About Corona," as well as on the Facebook page @BHAAAS and Instagram @bhaaas_usa_bih. The series is supported by the Government of Switzerland. The content of the publication, as well as the findings presented in it, do not necessarily reflect the views of the Government of Switzerland. 

https://www.youtube.com/watch?v=7R-CuHxcHEk