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Background Notes

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Data Sources

The CSO uses Computerised Infectious Disease Reporting (CIDR) data provided by Health Protection Surveillance Centre (HPSC) to produce this COVID-19 Insights Bulletin series. Data were extracted from CIDR on 07/12/2021 at 14:30 and were correct at the time. Data may change in future reports as further review and validation is carried out.

For vaccination update rates the CSO uses data provided by COVAX (the HSE national immunisation registry for COVID-19 vaccination). Data were extracted from COVAX on 17/11/2021 and were correct at the time. 

Please see the Vaccination Data FAQ for further information.

EU labelling 

Nationality breakdown is consistent with EU labelling used in CSO Population and Migration Estimates updated in light of the United Kingdom (UK) leaving the European Union with effect from 01 February 2020. These labels can be mapped to those used in  COVID-19 Vaccination Statistics Series 1 

Rest of EU14 excl. IRL: countries before enlargement on 01 May 2004, (i.e. Austria, Belgium, Denmark, Finland,  France, Germany, Greece, Italy, Luxembourg, Netherlands, Spain, Sweden, Portugal) to EU13 (EU15 Ireland and UK Excluded)

EU15 to 27: defined as 10 countries that joined the EU on 01 May 2004 (i.e. Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia), along with Bulgaria and Romania who joined on 01 January 2007 and Croatia who joined on the 01 July 2013 to EU14-27 states 

Why you can Trust the CSO

Learn about our data and confidentiality safeguards, and the steps we take to produce statistics that can be trusted by all.