Wuhan 2019- nCoV

MERS

SARS

Common cold caused by coronavirus

Detected

Dec 2019

2012, Saudi Arabia

2002 in southern China.

Winter each year

Origin

Bats, Snakes

Bats, Camel

Bats, Civets

Cases

14 countries

All cases linked to Arabian Peninsula; 80% from Saudi Arabia. Others in about two dozen countries, including U.S. Cases and deaths have been declining since 2016.

No new cases since 2004. About 87% of previous cases from China and Hong Kong.

Four coronavirus strains seem responsible for 15-30% of common colds.

India

 None

None

None

Human to human

Close contact

Close contact

Close contact

Close contact

2,494 confirmed cases; 858 deaths (as of Nov. 30, 2019).

8,098 cases; 774 deaths

Millions each year

Mortality

3%

35%

10%

Generally nonlethal with rare exceptions.