english: In general, the elderly are at greater risk, especially those over 70, because their immune systems are not as effective as they might have once been, and they are more susceptible to infections.
non_english: Uopšteno, stariji su pod većim rizikom, naročito stariji od 70 godina jer njihov imunitet više nije delotvoran kao što je možda nekad bio, te su podložniji infekcijama.