My bad. The thing specific to Bin Laden was Hep B, but it bled over to polio efforts by association.

https://www.npr.org/2021/09/06/1034631928/the-cias-hunt-for-bin-laden-has-had-lasting-repercussions-for-ngos-in-pakistan

Anti-polio in particular, in Pakistan. ISTR the way Bin Laden got found was some operation masquerading as a polio vaccination campaign. But also not not unsafe.

At least near me, there are a bunch, but nothing I'd recognize as a national brand. I'd think just googling for "restaurant supply near me" would be fruitful. But check first - some of them near me, at least, do verify that you're a real business.

Also worth checking - there's a "grocery store" that sells just monstrously big packages of everything, and also carries kitchen tools. I'm a bit mystified about what their clientele really is, though. I'd figure the only reason a real restaurant would ever send an employee out to a bricks-and-mortar store on the clock was a phenomenal failure to order their weekly trucked shipment. (But neither have I ever run a restaurant kitchen, so what do I know.)