Early Transmission Dynamics in Wuhan, China, of Novel Coronavirus-Infected Pneumonia.

ABSTRACT:

Background

The initial cases of novel coronavirus (2019-nCoV)-infected pneumonia (NCIP) occurred in Wuhan, Hubei Province, China, in December 2019 and January 2020. We analyzed data on the first 425 confirmed cases in Wuhan to determine the epidemiologic characteristics of NCIP.

Methods

We collected information on demographic characteristics, exposure history, and illness timelines of laboratory-confirmed cases of NCIP that had been reported by January 22, 2020. We described characteristics of the cases and estimated the key epidemiologic time-delay distributions. In the early period of exponential growth, we estimated the epidemic doubling time and the basic reproductive number.

Results

Among the first 425 patients with confirmed NCIP, the median age was 59 years and

SUBMITTER: Li Q 

PROVIDER: S-EPMC7121484 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature