The relatively low mortality/resistance to sars-cov-2 in East Asian countries has been something of a mystery.. Many champion masks, however a recently published paper posted by @BallouxFrancois piqued my interest which suggests genomic.. biorxiv.org/content/10.110…
Evolution due to ancient CoVs. We have noticed the host enzymes ACE2 and TMPRSS2 are instrumental in Sars-Cov-2 cell entry. Quindainone is a known inhibitor of TMPRSS2 pubmed.ncbi.nlm.nih.gov/32408547/ This is found naturally in Isatis Indigotica - an Asian Brassicaceae