‘This is how pandemics start’: Scientists issue warning after frightening development in Missouri Daily MailYet another person got bird flu. Now should I freak out? Vox.comFirst case of human bird flu diagnosed without exposure to infected animals, CDC says Fox NewsOfficials await testing clues from Missouri H5 avian flu case as Michigan reports more affected cows University of Minnesota Twin CitiesBird Flu Is Quietly Getting Scarier The Atlantic