Harry Potter star Jessie Cave issues warning after newborn baby got Covid - 'Don't wait!'

You, your child and anyone else you live with should stay at home and not have visitors until you get the test result – only leave your home to have the test.

Anyone in your support bubble should also stay at home if your child has been in close contact with them since their symptoms started or during the 48 hours before they started.

A support bubble is where someone who lives alone (or just with their children) can meet people from one other household.

However, as the NHS points out, children and babies will still get illnesses that can make them very unwell quickly.