Possibility?

I would be interested to know a doctor or pharmacist or clinician’s take on this idea: One popular idea currently is that many autoimmune disorders are caused, or at least aggravated, by exposure to viruses. I HAVE heard before that steroids can cause some viruses to “bloom”; so, my long-winded question would be: “Would it be a reasonable consideration, while taking steriods, to also take an antiviral med as a precautionary gesture?”