What about washing?
Washing the produce at home is not a reliable way to remove bacteria.
"The bacteria can be stuck on the surface of the lettuce, it can even get inside the lettuce," Goodridge says. "So if you wash it, you might remove some of the bacteria, but you're not removing 100 per cent. And we know in some cases, when we look at historical outbreaks of E. coli, even ingesting one single bacterial cell was enough to cause illness."
https://www.cbc.ca/news/health/lettuce-e-coli-contamination-1.4913956#:~:text=What about washing?,not removing 100 per cent.
E.coli don't give no fucks if you wash the lettuce, that's why they recall it all or announce it so people throw it out.