. 2020 Aug 2;17(15):5574. doi: 10.3390/ijerph17155574

Table 1.

Comparison between COVID-19, SARS, MERS, and EVD.

Description	COVID-19 ¹	SARS ²	MERS ³	EVD ⁴
Incubation period	2–14 days	2–10 days	2–14 days	2–21 days
Contagious during incubation	Yes	Yes	Yes	No
Vaccine release year	N/A	N/A	N/A	Dec. 2019
Infected body part	Blood vessels	Respiratory system	Respiratory system	All muscles
Latest outbreak	Dec. 2019	Nov. 2002–July 2003	April 2012	Dec. 2013–June 2016
Latest outbreak	Dec. 2019	Nov. 2002–July 2003	July 2015	Dec. 2013–June 2016
Winter/summer impact	Likely	Likely	Not likely	Not likely
Main transmission	Respiratory droplet secretions	Respiratory droplet secretions	Respiratory droplet secretions	Body fluids
Shape and size in nm	Spherical 80–120 nm	Spherical 80–90 nm	Spherical 90–125 nm	Filament
Shape and size in nm	Spherical 80–120 nm	Spherical 80–90 nm	Spherical 90–125 nm	14,000 × 80 nm
Temperature impact	Likely	Likely	Likely	Likely
Mortality rate	2.65%	14–15%	34%	Up to 90%
Pronounced R-naught	2–2.5	3.1–4.2	<1	1.5–1.9

1. COVID-19: Coronavirus Disease 2019; 2. SARS: Severe Acute Respiratory Syndrome; 3. MERS: Middle East respiratory syndrome; 4. EVD: Ebola Virus Disease.