Table 1.

Epidemiological indicators of COVID-19 infection

Indicators	Description
Patient age	Cases ranged between 25 - 89 years, with most patients aged between 35 - 55 years and fewer cases among children and infants [19]
	Median age of patients is 59 years, ranging from 51- 89 [12]
	Average age of patients was 55.5 years; age distribution: ≤ 39: 10%; 40–49: 22%, 50–59: 30%; 60–69: 22%, ≥70: 15% [1]
	Cases range from 2 - 72 years
Patients Sex	More cases were males [12,19]
	68% males [12]
	59% males [1]
Age of the deaths	Median age of death was 75 (with a range between 48 and 89 years [8]
History of Exposure	Huanan Seafood Market in Wuhan [1]
	Wuhan residents or people who visited Wuhan [8]
Incubation time	4.8 ± 2.6 days (2–11 days) [22]
	5.2 days (4.1–7 days) [12]
	Average of 7 days (2–14 days) [13]
	Average of 10 days [17]
Basic Reproduction (R0)	2.6 (uncertainty range: 1.5–3.5) [9]
	3.8 (95% CI: 3.6–4.0) [10]
	2.2 (1.4–3.8) [12]
	2.68 (95% CI: 2.47–2.86) [22]
Susceptible populations	Elderly people [8]
	People with poor immune function
	People with chronic co-morbidities [8]
	Surgery history before admission [8]