Covid-19 and Vitamin K

https://www.preprints.org/manuscript/202004.0457/v1

Have your green leaves and:

https://dysnutrition.blogspot.com/2014/05/vitamin-k-paleo-diet-and-metabolism.html

https://dysnutrition.blogspot.com/2016/01/vitamin-k.html 

https://academic.oup.com/cid/advance-article/doi/10.1093/cid/ciaa1258/5898121

https://www.clinicaltrials.gov/ct2/show/record/NCT04770740