The HSE says Strep A is being 'actively considered' as a possible cause in the death of a four-year-old child in Ireland.
It's believed that Strep A is one of a number of illnesses that is being considered as a contributory factor in the child's death.
It hasn't been confirmed and is subject to laboratory testing.
The child died in the public health area which takes in North Dublin and the northeast of the country.
The latest figures show that over 55 cases of Strep A have been confirmed here, while two older people have died.
It follows the death of a five-year-old girl in the North last night, which is also being linked to the infection.
Strep A can cause a sore throat, fever and skin infection, although in many cases a course of antibiotics can help a patient make a full recovery.
It can be spread through contact with an infected person, or skin contact