[astura]

In my country (USA) flu vaccines are certainly not "reserved for the sick and elderly," they are emphatically recommended for almost everyone.

https://www.cdc.gov/flu/prevent/flushot.htm

>CDC recommends use of any licensed, age-appropriate influenza vaccine during the 2021-2022 influenza season.

>Everyone 6 months of age and older should get an influenza (flu) vaccine every season with rare exception. CDC’s Advisory Committee on Immunization Practices has made this recommendation since the 2010-2011 flu season.

>There are many flu vaccine options to choose from, but the most important thing is for all people 6 months and older to get a flu vaccine every year.

[kbelder]

Rates of flu vaccination in the US are a little over 50%. I've never been vaccinated for it, nor my family.