RS‐CoV‐1 2003 ACE2 Palm civets MERS‐CoV 2012 DPP4 Bats, camels SARS‐CoV‐2 2019 ACE2 Bats, (?) Note: ? indicate other possible hosts of SARS‐CoV‐2, besides bats ‐ if they exist ‐ ha