How do VACCINES work?

In this video, I'll talk about how vaccines work and also review how our immune system works. I hope you enjoy! ★ More videos about the immune system:    • SISTEMA IMUNOLÓGICO   ★ Website: https://www.anatomiaetc.com.br/ ★ Subscribe:    / @anatomiaetc   ★ Instagram:   / anatomia_etc   ★ Facebook:   / nataliareineckecanalyoutube