220  In primary human airway epithelial (HAE) cell cultures, the antiviral activity assessment of remdesivir against SARS‐CoV‐1 and MERS‐CoV showed a dose‐dependent reduction in replication with average IC50 values of 0.069 µM (SARS‐CoV‐1) and 0.074 µM (MERS‐CoV).