Check The Current Estimate Of Covid-19 R Number

The current estimate of the R Number.


The current estimate of the R Number

The Department of Health continues to publish the Covid-19 reproduction number on a weekly basis in Northern Ireland.

The current estimate of R is 0.5 – 1.0

R represents the number of individuals who, on average, will be infected by a single person with the infection. 

R does not have a fixed value but varies with time, and is likely to be different every day.

When community transmission of the virus is very low, R will no longer be the most important number for the purpose of policy decisions.

In particular, once the number of new cases is sufficiently low in the context of a robust testing programme and test/trace/protect strategy, the number of positive tests per day is likely to be a more important parameter.

R continues to show a high degree of volatility and be heavily influenced by small local clusters, and is therefore not the key indicator for policy decisions.