# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2018-12-27 03:40:11 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1078133413264015360) RT @drjanaway: #snapfact Vaccines are formed of a dead or inert form of a virus which helps your immune system recognise a wild and danger…