Arteta's basically said he didn't mention it for medical privacy reasons. Seems odd tbh but it is what it is.
Sounds like Laca is not in a good way.
Maybe I'm being unfair but at this point, I kinda feel like they're being a bit irresponsible if they're catching COVID. Appreciate infection rate in the UK is relatively high but if your job depends on your physical state, is it unreasonable to take a few precautions? Maybe they were just unlucky, I don't know that's my gut reaction.