Estimation of basic reproduction number for COVID‐19 and the reasons for its differences

Najafimehr, Hadis; Ali, Kosar Mohamed; Safari, Saeed; Yousefifard, Mahmoud; Hosseini, Mostafa

doi:10.1111/ijcp.13518

Cited by 23 publications

(22 citation statements)

References 7 publications

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“…Demirci, Unal, and Ozalp, (2011) use a fractional SEIR epidemic model to analyze the disease-free state when the death rate is proportional to the population density. Najafimehr, Mohamed Ali, Safari, Yousefifard, and Hosseini, (2020) ; Liu, Gayle, Wilder-Smith, and Rocklöv, (2020) ; D’Arienzo and Coniglio (2020) ; Wang et al (2020) , and You et al (2020) focus on estimating the basic reproduction number R 0 . R 0 is defined as the average number of infections that an infected person can cause after getting into contact with the susceptible population ( Bauch & Oraby, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Response to the COVID-19: Understanding implications of government lockdown policies

Kumar

Priya

Srivastava

2021

Journal of Policy Modeling

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The rising number of COVID-19 cases and economic implications of lockdown measures indicate the tricky balancing act policy makers face as they implement the subsequent phases of 'unlock'. We develop a model to examine how lockdown and social distancing measures have influenced the behavioral conduct of people. The current situation highlights that policy makers need to focus on bringing awareness and social restraint among people rather than going for stringent lockdown measures. We believe this work will help the policy makers gain insights into the troubled COVID-19 times ahead, and based on the estimates, they can frame policies to navigate these wild waves in the best possible way.

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Section: Introductionmentioning

confidence: 99%

Response to the COVID-19: Understanding implications of government lockdown policies

Kumar

Priya

Srivastava

2021

Journal of Policy Modeling

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“…The two surgical patients were referred to their general practitioners for further evaluation. All hospital workers and patients tested negative; an encouraging result considering the contagiousness and high reproduction number (R 0 ) of the virus, thought to be over 6 4 .…”

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confidence: 90%

Surgery at the time of COVID-19 pandemic: initial evidence of safe practice

Genio

Tolone

Brusciano

et al. 2020

British Journal of Surgery

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“…[1,4] According to currently available basic reproduction numbers (R 0 ), the severe acute respiratory coronavirus 2 (SARS-CoV-2), the pathogen of COVID-19, is highly infectious. [5][6][7] Considering the pandemic of COVID-19 and the shortage of health resource, it is undoubtedly critical to prevent infection spread and to protect health workers against COVID-19. Although the transmitting way of SARS-CoV-2 is not fully understood yet, contact, respiratory droplet and fomites have been proposed by some scholars.…”

Section: Introductionmentioning

confidence: 99%

Lung Function Decline and Other Physiological Changes in Health Workers after Working in COVID-19 Isolation Wards: An Observational Study

Chen

Zhu

Wang

et al. 2020

Preprint

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Background:Global healthcare systems have been under huge pressure since Coronavirus Disease 2019 (COVID-19) was declared a pandemic. It is critical to prevent further spread of COVID-19 and to protect health workers from infection. This study aims to figure out short-term physiological impact on health workers induced by working in isolation wards for hours with personal protective equipment (PPE), so as to provide insights on reducing physiological impact and infection risk of health workers.Methods:Health workers who had worked in COVID-19 isolation wards for at least five weeks in Wuhan, China were recruited. Parameters including lung function, heart rate, oxygen saturation and weight were respectively measured before and after they worked in isolation wards. Comparison and regression analyses were conducted. Correlations between changing levels of measured parameters (lung function and heart rate) and baseline characteristics (body mass index, age, and working duration) were also analyzed. Results: After working in isolation wards for four to nine hours, the forced vital capacity (FVC) of health workers (74.32±17.59 versus 81.28±16.35, P<0.001) as well as weight (54.79 (48.50, 61.00) versus 55.50 (48.90, 61.00) P<0.01) showed significant decrease, while HR showed significant increase (110.31±14.65 versus 103.94±16.38, P=0.04). Correlation between BMI and the decline levels of FEV1/FVC (β=2.87, P=0.02) and correlation between BMI and the decline levels of FEF25-75 % predicted (β=1.80, P<0.05) were reported.Conclusions:After working in COVID-19 isolation wards with PPE for four to nine hours, the lung function of health workers declined. The decline levels were associated with BMI. HR increase and weight loss were reported. In order to reduce the potential infection risk of health workers, the balance between working duration and physiological changes should be considered when making shifting schedule.

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Estimation of basic reproduction number for COVID‐19 and the reasons for its differences

Cited by 23 publications

References 7 publications

Response to the COVID-19: Understanding implications of government lockdown policies

Response to the COVID-19: Understanding implications of government lockdown policies

Surgery at the time of COVID-19 pandemic: initial evidence of safe practice

Lung Function Decline and Other Physiological Changes in Health Workers after Working in COVID-19 Isolation Wards: An Observational Study

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