We've put some small files called cookies on your device to make our site work. We would also like to use analytical cookies to understand how our site is used and improve user experience. Analytical cookies send information to Google Analytics.
Let us know your preference. We will use a cookie to save your choice. Before you make your choice you can read more about our cookie policy.
Important:
School, nursery or work
Stay away from school, nursery or work until all the spots have crusted
over. This is usually 5 days after the spots first appeared.