Some additional details from other local sources. Details are scarce, so... sorry, but I think I can add a couple of things to the linked article.
The UME (Military Emergency Unit) has been disinfecting retirement homes for some days now (about a week IIRC). Initially they were only allowed to do this, disinfestation, and it was the homes' responsibility to "ask for help" on anything else when needed, and some didn't.
The news referred to in the article is that "at least 2" undeclared dead people have been found by the UME and also a number of cases of abandonment. Besides these "at least 2", there have been some other deaths but, generally, they have been declared. (What I know from friends: Most homes have secluded people in their rooms and many are understaffed to check on them frequently enough.)
A related problem seems to be that funeral services are overwhelmed: they don't have enough space to store the bodies, and they do not have protective gear to deal with the bodies correctly (added note, see below comment). This has led to an announcement yesterday that a local ice-skating ring is being arranged to store those bodies temporarily while they wait to be disposed of.