The video is of phagocytosis of Shigella sp bacteria.

I had a coworker who was serotyping someone’s positive stool. They ended up getting it on their hand and didn’t wash well enough. Shigella has a very low infectious dose (about 10-200 bacteria) and serotyping uses incredibly concentrated suspensions. So… she got shigellosis and basically spent the week on the toilet with diarrhea while holding a bucket for her vomit.