Hiii! Yes, most bus companies require health/medical cert ngayon para sa provincial trips, lalo na for long-distance like Alabang to Bicol, it's part of their safety protocols post-pandemic kaya better to confirm directly with your bus operator (Sky Pasada, Sunrays, whoever you're booking with) kung ano exactly ang kailangan nila. You can usually get a quick medical cert from any clinic or doctor's office, pero call ahead kung available agad para hindi hassle on travel day, lalo na if you're traveling with kids!