Flu vaccine has to be taken every year. | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		tigershark on March 15, 2020 \| parent \| context \| favorite \| on: Ask HN: Is UK government insane or genius? Flu vaccine has to be taken every year.

thu2111 on March 15, 2020 [–]

That's because flu isn't a single disease, it's a category of diseases, like cancer. People do build immunity to specific flu variants.

Consider applying for YC's Summer 2026 batch! Applications are open till May 4
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact