Yeah, most risk in with older population, but with flu they have 2.1% last study, so this is still 5x-6x higher estimate. I believe the biggest risk to the other population is just no having access to care as the hospitalization rate could be potentially much higher, which was the issue originally in China.

https://www.medscape.com/answers/300455-10781...umonia#qna

The highest rates of hospitalization for influenza occur in preschool-aged children and in the elderly population. During outbreaks, the hospitalization rates are 27.9 cases per 10,000 persons younger than 5 years and 55 cases per 10,000 persons older than 65 years.


https://www.healio.com/infectious-disease/inf...ng-elderly

“Over four influenza seasons, the rates of hospitalizations among adults aged 65 to 74 years ranged from 101 to 417 per 100,000 persons, whereas rates ranged from 209 to 1,264 and 562 to 2,651 among adults aged 74 to 85 years and those aged 85 years or older, respectively.

Moreover, compared with adults aged 65 to 74 years, adults aged 75 to 84 years had hospitalization rates 1.4 to 3 times higher, and adults aged 85 years or older had rates 2.2 to 6.4 times higher.

Furthermore, patients aged 85 years or older had higher odds of pneumonia (adjusted OR = 1.2; 95% CI, 1-1.3) and in-hospital death or transfer to hospice (aOR = 2.1; 95% CI, 1.7-2.6), compared with adults aged 65 to 74 years.”