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Estimate of the Basic Reproduction Number for COVID-19: A Systematic Review and Meta-analysis

Yousef Alimohamadi1,2, Maryam Taghdir3, Mojtaba Sepandi3,4

  • 1Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran.

Journal of Preventive Medicine and Public Health = Yebang Uihakhoe Chi
|June 6, 2020
PubMed

Insights

This study estimates the basic reproduction number (R0) for coronavirus disease 2019 (COVID-19) to be 3.32. Reducing population contact is crucial for controlling the COVID-19 epidemic.

Area of Science:

  • Epidemiology
  • Public Health
  • Infectious Disease Modeling

Background:

  • Coronavirus disease 2019 (COVID-19) poses a significant global public health challenge due to its high transmissibility.
  • Accurate estimation of the basic reproduction number (R0) is vital for effective COVID-19 prevention and control strategies.
  • Discrepancies in existing R0 estimates necessitate a comprehensive systematic review and meta-analysis.

Purpose of the Study:

  • To systematically review and meta-analyze existing studies to estimate the pooled basic reproduction number (R0) for COVID-19.
  • To provide a more precise R0 value to aid in public health decision-making for COVID-19 containment.

Main Methods:

  • A systematic literature search was conducted across major databases (Google Scholar, Science Direct, PubMed, Scopus).
  • Keywords used included "COVID-19" and "basic reproduction number" or "R0".
  • A random-effects model was employed to pool R0 estimates, with heterogeneity assessed using I2, Cochran Q, and T2 statistics.

Main Results:

  • The mean reported R0 in individual studies ranged from 1.90 to 6.49, with an average of 3.38±1.40.
  • The pooled R0 for COVID-19, estimated via a random-effects model, was 3.32 (95% CI: 2.81–3.82).
  • Meta-regression analysis indicated that the type of model used did not significantly impact R0 heterogeneity (p=0.81).

Conclusions:

  • The estimated pooled R0 of 3.32 for COVID-19 underscores the importance of reducing population contact to control the epidemic.
  • The overall estimated R0 is higher than the initial estimate provided by the World Health Organization.
  • Implementing measures to decrease transmission, such as social distancing, is critical for managing the COVID-19 outbreak.
Abstract

Keywords:
Basic reproduction numberCOVID-19Meta-analysisOutbreakPublic health

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