3 ms·
> every year more vulnerable people are added to that set as population ages, gets fatter, has more advanced coronary or metabolic disease, etc. The number add
by kansface 5y ago
> every year more vulnerable people are added to that set as population ages, gets fatter, has more advanced coronary or metabolic disease, etc.
The number added each season is not necessarily the same number as the ones removed in the previous year - see the prevalence of really bad flu seasons for instance, which occur every 2-3 years or so.