Immunologist Antonella Viola confirmed on Facebook that she received an envelope in the mail containing a bullet and a threatening letter. source http://hub.page/lifestyle/one-of-italys-top-coronavirus-experts-says-she-was-threatened-with-a-bullet-in-the-mail-after-she-advocated-for-children-to-get-vaccinated sourcehttps://hubpage1.tumblr.com/post/672761926765461504