Coronavirus Incubation Period (2-14 days) Wuhan


Details of the Coronavirus Incubation Period are listed below Coronavirus Incubation Period Coronavirus Incubation Period

Incubation Period Of Corona-virus:

2 to 14 days Coronavirus Incubation Period

Possible outliers: 0 to 27 days Coronavirus Incubation Period

Summary of findings:

  • 2-14 days represents the current official estimated range for the corona-virus (COVID-19).

Coronavirus Incubation Period (2-14 days) Wuhan

  • However, a case with a Corona-virus  incubation period of twenty-seven (27) days has been reported by Hubei Province local government on 02, 22,2020 
  • In addition, a case with an incubation period of 19 days was observed in a JAMA study of 5 cases published on 02, 21.
  • An outlier of a 24 days incubation period had been for the first time observed in a 02, 9 study. The World Health Organization (WHO) said at the time that this could actually reflect a second exposure rather than a long incubation period & that it was not going to change its recommendations.
  • The period can vary greatly among patients.
  • Mean incubation period observed:
    3.0 days
     (0 – 24 days range, a study based on 1,324 cases) five-point two
     days Corona-virus incubation period (4.1 – 7.0 days range, based on 425 cases).
  • Mean incubation period observed in travelers from Wuhan:
    6.4 days
     (range from 2.1 to 11.1 days).

Coronavirus Incubation Period Comparison importance

Corona-virus Incubation Period 

Time from exposure to the development of symptoms (incubation period) of the virus is estimated to be between 2 to 14 days based on the following sources:
  • (WHO) The World Health Organization reported an incubation period for Corona-virusCOVID-19) b/w 2 to 10 days
  •  (NHC) China’s National Health Commission had initially estimated an incubation period from ten(10) to fourteen( 14 )days.
  • The United States’ CDC estimates the incubation period for Corona-virus (COVID-19) to be b/w 2 to 14 days.
  •, a leading Chinese online community for health care professionals(doctors), is reporting a Corona-virus incubation period of “three(3) to seven( 7) days, up to fourteen(14) days”.
The estimated range could be most likely narrowed down as more data becomes available.

The incubation period of up to 24 days? 

The incubation period has been found to be as long as twenty-four (24) days (range: 0-24 days; median: 3.0 days) in a study published on Feb,09,2020.
(WHO)The World Health Organization  said in a press conference on 02,10,2020 that:
  • A very long corona-virus incubation period could reflect a double exposure.
  • Twenty four(24) days represented an outlier observation that must be taken into consideration in the context of the main finding of the study.
  • (WHO) The World Health Organization isn’t considering changing recommendations regarding corona-virus incubation periods.
More recently, however, a case with an incubation period of nineteen( 19) days was observed in a JAMA theory reported on 02, 21.2020, & another case with a corona-virus incubation period of twenty-seven (27) days was reported by Hubei Province on 02, 22,2020. 

The incubation period of 5.2 days on average 

A Chinese study published in the New England Journal of Medicine on 01. 30,2020, has found the incubation period to be 5.2 days on average, but it varies greatly among patients. The Chinese team conducting the theory of corona-virus (COVID-19) incubation period said their findings support a fourteen days (14) medical observation period for people exposed to the pathogen.
Below is an extract of the study of Corona-virus incubation period findings (highlight added by Worldometer):
Among the first four hundred & twenty-five (425) patients with confirmed NCIP, the age was 59 years & 56% were male. The most cases fifty-five percent (55%) with onset before 01, 01, 2020, were linked to the Huanan Seafood Wholesale Market, as compared with eight point six percent( 8.6%) of the subsequent cases.
The mean corona-virus incubation period was five point two( 5.2) days ninety-five percent (95% confidence interval, 4.1 to 7.0), with the 95th percentile of the distribution at twelve point five(12.5) days.
In its initial stages of the corona-virus incubation period, the epidemic doubled in size every seven point four(7.4) days. With a mean serial interval of seven point five(7.5) days (95% CI, 5.3 to 19), the basic reproductive number was estimated to be two point two ( 2.2) days (95% CI, 1.4 to 3.9).
Conclusions On the basis of this information, there is evidence that closed contact of human-to-human transmission has occurred since the middle of 12, 2019. Considerable efforts to reduce transmission shell be required to control outbreaks if similar dynamics implement elsewhere. Measures to prevent or reduce transmission should be implemented in populations at risk corona-virus incubation period.
Initial transmission Dynamics in Wuhan corona-virus incubation period, China, of (COVID-19)Corona-virus–Infected Pneumonia – Qun Li et al., New England Journal of Medicine, 01. 29, 2020

Incubation Period in Travelers from Wuhan 

A study financed by the Netherlands Ministry of Health & published on Euro surveillance analyzed data on 88 cases with known travel history (to &) from Wuhan which were detected between 20 & 28 January as being infected with corona-virus( COVID-19). coronavirus incubation period
The mean incubation period was estimated to be six point four(6.4) days. The incubation period ranges from two-point one zero( 2.10) to eleven point one(11.1) days. The upper limit of eleven point one( 11.1) days could be considered conservative.

The importance of knowing the incubation period 

Understanding the incubation period for health is very important for authorities as it allows them to introduce more effective quarantine symptoms for people suspected of carrying the virus, as a way of controlling & hopefully preventing the spread of the corona-virus( COVID-19) virus. coronavirus incubation period

Comparison with other viruses 

For comparison, the incubation period for seasonal influenza is typically around two( 2) days. The incubation period for other corona-viruses e.g. SARS two to seven (2-7) days & MERS  five(5) days typically (range 2-14 days).

Coronavirus Incubation Period (2-14 days) Wuhan

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