31–3.22) 2.86 (2.40–3.39) 3.00 (2.50–3.58) 8-fold 2.16 (1.90–2.45) 2.24 (1.96–2.55) 2.32 (2.02–2.66) Note: ‘SI’ is serial interval. ‘MERS’ is Middle East Respiratory Syndrome, and ‘SARS’ is the Severe Acute Respiratory Syndrome. Results