This is coronavirus Du’a. You can read as much as you can, reading it after every Salah is suggested by the scholars.
Anas (R.) reported , prophet Sallahualihi wa Sallam says,
اللَّهمَّ إِنِّي أَعُوُذُ بِكَ مِنَ الْبرَصِ، وَالجُنُونِ، والجُذَامِ، وسّيءِ الأَسْقامِ