Symptoms include a high temperature, muscle aches, redness at a wound, dizziness or a flat red rash.
There has been an alarming spike in a harmful form of Strep throat in Ireland.
Cases of the invasive Group A Streptococcus disease this year are more than quadruple what was expected, according to the Health Protection Surveillance Centre.
There have been 30 deaths caused by the sickness since October 2022.
The HPSC say symptoms of iGAS include extremely high temperature, muscle aches, redness at a wound, dizziness or a flat red rash.