Wales is dealing with a "tripledemic" — rising rates of coronavirus, record levels of strep A/scarlet fever cases, and a winter flu season which has arrived earlier than usual.
The Welsh NHS Confederation has described demand on the system as "relentlessly high". Call volumes to the NHS Wales 111 helpline have increased by a record 300% And one Welsh health board — Betsi Cadwaladr in north Wales — has declared a critical incident and cancelled all but the most urgent operations, partly because of these three infectious illnesses spreading through communities.
The NHS has provided a list of the symptoms of each of the three illnesses. If you are worried that you or a loved one might have one of the infections, here are the symptoms you should know about: