Translation of "often" into Slovak

I see him quite often in the city. Sometimes we have lunch together.

Vidím ho dosť často v meste. Niekedy obedujeme spolu.

Is it just me, or is the world ending more often these days?

Zdá sa mi to, alebo je koniec sveta v týchto dňoch častejší?

The onset of illness is often just as unforeseeable as recovery from the illness.

Vznik choroby sa však nezriedka ukazuje rovnako nepredvídateľný ako samotné doznievanie choroby.