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.

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 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.