https://www.zorinaq.com/pub/ncov-comparison.html (updated 21 Feb 2020 01:02 UTC)
Disease Transmission R₀ Case fatality ratio Hospitalized
cases sent to ICU
Asymptomatic
transmission
Year
vaccine
available
Pertussis Airborne droplet 9.9-11.5 4% 1930s
Diphtheria Airborne droplet 6-7 5-10% 1923
Measles Airborne 12-18 0.1-0.2% 1963
Smallpox Airborne droplet 5-7 30% (variola major) 1797
Rubella Airborne droplet 5-7 3-6% (developing world) 1970
Mumps Airborne droplet 4-7 0.01% 1967
SARS Airborne droplet 2-5¹ 9.6%¹ No n/a
MERS Airborne droplet <1¹ 34%¹ No n/a
Swine flu
(A/H1N1)
Airborne 1.64-1.88⁷ 0.026%⁸ Yes 2009
Seasonal flu Airborne 1-2 < 0.1% 5-10%⁵ Yes seasonal
Hong Kong flu
(1968 pandemic)
Airborne 1.21-3.58¹¹ <0.5%¹² Yes 1968
Spanish flu
(1918 pandemic)
Airborne 2-4¹³ >2.5%¹⁴ Yes n/a
Novel coronavirus
(2019-nCoV)
Airborne droplet⁹ 1.4-2.5²
2.47-2.86⁶
1.8%⁴ 23%³ Suspected¹⁰ n/a