This is new territory for us. That alone can be enough to make people afraid.
This morning as I prayed Office of Readings, I read from Exodus about Moses receiving the covenant from God on Mout Sinai. There was some fear built into this process for the People of God. The threat God told Moses to pass on to the people was that no one should approach the mountain, and if they did, they were to be stoned to death or shot with arrows. Their signal was to be the ram's horn. When they heard that ram's horn, and then only, they could approach.
Think of it: we hear that God purposefully struck fear into the hearts of his people.
St. Irenaeus explains why this was the case: "He made them afraid as they listened, to warn them not to hold their Creator in contempt."
As Irenaeus sees it, God was training his people to give him the consideration he deserves. Why? because God is an insecure egomaniac? Of course not. We need to give God due consideration because he is our origin, our Creator. Without giving him his proper due, his proper worship, we are serious out of tune with ourselves and we fall short of that for which we were created. If we don't worship, we are dysfunctional. It's for our good.
Fear, therefore, like all things we can feel, should be our servant. In this case of the corona virus, it is not a bad thing for fear to move us to prepare, if not for ourselves, then to be able to serve the vulnerable around us who don't have means, who won't necessarily be able to care for themselves, and who will suffer. Use the precautions that scientists advise to flatten the curve. Become more aware of the needs people have, if we tend to be on the dull side of thinking about others.
Fear, however, should not be our master, nor our enemy that we desperately try to beat away from us. Allow fear to do its necessary work, then bring it to Jesus, to Perfect Love, who casts it out. Pushing down fear, refusing to feel it, will create the panic that harms. Don't refuse God's servant. Don't forget it is ONLY God's servant. God is the master. Let him be that. Trust him, and entrust all of your concerns to him.
Therefore, put on the armor of God, that you may be able to resist on the evil day and, having done everything, to stand. Ephesians 6:13