Cochrane review: How effective is quarantine alone or in combination with other public health measures to control coronavirus (COVID-19)?

Cochrane | May 2020 | How effective is quarantine alone or in combination with other public health measures to control coronavirus (COVID-19)?

A new review from Cochrane summarizes evidence available from modelling studies that show how quarantining affects the spread of COVID-19.

cochrane.org
Image source: cochrane.org

The authors of this Cochrane Review concluded that:

  • Quarantine of people exposed to confirmed cases may avert high proportions of infections and deaths compared to no measures.
  • The effect of quarantine of travelers from a country with a declared outbreak to avert transmission and deaths was small.
  • In general, the combination of quarantine with other prevention and control measures, such as school closures, travel restrictions, and physical distancing, had a greater effect on the reduction of transmissions, cases which required critical care beds, and deaths compared with quarantine alone.
  • More comprehensive and early implementation of prevention and control measures may be more effective in containing the COVID-19 outbreak.

The researchers rate their confidence in the results to be low or very low because of the way that the models used in the studies were developed. They are based on assumptions about the true prevalence of infection, which could be updated when we know more about this aspect of the COVID-19 pandemic.

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