User talk:67.78.74.142

May 2018
Please refrain from making unconstructive edits to Wikipedia, as you did at Herd immunity. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Nigos (t@lk • Contribs) 07:33, 3 May 2018 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.