Cookie Policy

What is a cookie?

A cookie is a small file stored in your browser by a website. This can then be read by the website and/or third party websites.

Why do I need this information?

It is now law in the UK to let a user know that a website is storing a cookie on their browser and get informed consent before doing so. This means explaining what is stored and what it is for so a user can choose whether to accept it or not.

What cookies are used on CDC's site?

We use third-party cookies from Google Analytics listed below to track aspects of your visit to our site. We use this information to improve the quality and use of the website, content and presentation based on the popularity of certain pages or which pages get the fewest unique visitors so we can make content more applicable to our users.

We also use first-party secure cookies for forms, sign in and shopping on our website. We use these cookies to make our site run smoothly and enable you to buy or sign up to things securely.

Our main cookies are listed below:

_utma:Tracking cookie that tracks first time visitors

_utmb & utmc: These cookies work together - umtb marks the exact arrival time, then utmc registers the precise exit time of the user.

_utmz: Moniters referrals to tell us how you got to our website

_utmv: Works hand in hand with the utmz cookie to improve cookie targeting capabilities.

_atuvc: AddThis social media bookmarks, when you use the social media sharing tools at the top right of some of our pages

_yourAuthCookie: Is used if you select 'remember me' to save your login details

UMB_UCONTEXT: This stored id that is used by our Content Management System to build and maintain our site

What if I don't want cookies?

You can opt-out of Google Analytics Tracking across all websites at

You can disable cookies by using your individual browser options. For more information about how to manage cookies on specific browsers please go to the browsers respective websites.