I saw one slide from Comptia official documentation that listed "Antivirus Software" as a example of Physical Security.
I never heard that before so I was wondering if any of you have seen that statement before.
I would have a very difficult time even stretching that one to fit. By definition, a computer virus is a logical piece of code designed to infect files (also logical things) in order to propagate itself in a system. Even if you expand it out to anti-malware, everything that's done in the malware world is logical - and although it can have an effect on physical things, such as the operation of a server or network, it is, itself a logical thing.
So it stands to reason that anti-virus/malware also is logical.
Perhaps if you took physical means of controlling the propagation of malware, such as air-gapping systems (much like quarantining and isolating an infected patient), but that's probably the only way to make that fit, in my opinion.