We need people to sign up to our Thunderclap campaign via their Twitter, Facebook and Tumblr accounts. 

If we get 500 people to sign up, a message raising awareness of encephalitis and World Encephalitis Day will be shared among everyone's social media accounts at 11am BST on February 22.

Last year we reached 2.5 million people - can you help us do the same?

Sign up today - it only takes a couple of clicks!