Smoking is Associated with Doubling of COVID-19 Progression Risk

Source:

Roengrudee Patanavanich, Stanton A Glantz Smoking is Associated with COVID-19 Progression: A Meta-Analysis.  doi: https://doi.org/10.1101/2020.04.13.20063669

There are a lot of  reasons to expect that smoking would make COVID-19 worse.  Kade Patanavanich and Stanton Glantz have completed a meta-analysis of 12 papers that present evidence on disease progression among people who have been diagnosed with COVID-19 (10 from China, 1 from Korea, and 1 from the USA).  The researchers found that the odds of disease progression were more than doubled.