Other Greek letters that you often see on frat house signs (or the shields of Spartans) like Lambda (λ) Gamma (Γ) and Phi (Φ) are also the same in Russian. (Л, Г, Ф).

The Greek alphabet is a millennia-spanning marvel that didn’t necessarily need this boost in visibility. But the world is now getting a lesson in Greek, one unpleasant coronavirus variant at a time.