The Novel Coronavirus, 2019-nCoV, is Highly Contagious and More Infectious Than Initially Estimated

Understand

The novel coronavirus (2019-nCoV) is a recently emerged human pathogen that has spread widely since January 2020.

• Initially, the basic reproductive number, R0, was estimated to be 2.2 to 2.7.
• Here we provide a new estimate of this quantity.
• We collected extensive individual case reports and estimated key epidemiology parameters, including the incubation period.