Glossary

CFR

Case fatality rate for iGAS is the proportion of cases of iGAS that die within seven days of a positive specimen regardless of the cause of death.

This enhanced case information is actively followed up 30 days after initial reporting.

ECOSS

Electronic Communication of Surveillance in Scotland system

GAS

Group A Streptococcus

iGAS

Invasive group A streptococcal infections

NHS

NHSScotland is the publicly funded healthcare system in Scotland and one of the four systems that make up the National Health Service in the United Kingdom.

It operates 14 territorial NHS boards across Scotland, supported by seven special non-geographic health boards, and Public Health Scotland.

Public Health Scotland is Scotland’s lead national body for improving and protecting the health and wellbeing of all of Scotland’s people. It is an NHS board that is uniquely sponsored by the Scottish Government and the Convention of Scottish Local Authorities (COSLA).

PCR

Polymerase chain reaction (PCR) is a technique used to make numerous copies of a specific segment of DNA quickly and accurately.

Quarter 1

This covers January to March (weeks 1 to 13).

Quarter 2

This covers April to June (weeks 14 to 26).

Quarter 3

This covers July to September (weeks 27 to 38).

Quarter 4

This covers October to December (weeks 39 to 52).

Last updated: 13 August 2025
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