English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

To explore early prevention and control of coronavirus disease 2019 COVID-19 outbreak based on system dynamics model analysis. The data of early outbreak of COVID-19 were collected from the World Health Organizationcovering countries of the ChinaUnited StatesUnited KingdomAustraliaSerbia and Italy. The susceptible-exposed-infected-recovered SEIR model was generalized and then its parameters were optimized. According to the parameters in the basic infection number expressionthe sensitivity in the system dynamics model was used to quantitatively analyze the influence of the protection rateinfection rate and average quarantine time on the early spread of the outbreak. Based on the analysis resultstargeted prevention and control measures for the early outbreak of COVID-19 were proposed. The generalized SEIR model had a good fit for the early prediction and evaluation of COVID-19 outbreaks in six countries. The spread of COVID-19 was mainly affected by the protection rateinfection rate and average quarantine time. The improvement of the protection rate in the first ays was the most important:the greater the protection ratethe fewer the number of confirmed cases. The infection rate in the first 5 days was the most critical:the smaller the infection ratethe fewer the number of confirmed cases. The average quarantine time in the first 5 days was very important:the shorter the average quarantine timethe fewer the number of confirmed cases. Through the comparison of key parameters of six countriesAustralia and China had implemented strict epidemic prevention policieswhich had resulted in good epidemic prevention effects. In the early stage of the outbreakit is necessary to improve the protection rateshorten the average quarantine timeand implement strict isolation policies to curb the spread of COVID-19.

Exploring early prevention and control of COVID-19 outbreak based on system dynamics model analysis