Influenza virus can easily mutate and change its spike proteins, this our B memory cells aren't able to bind to this new mutated virus and it's as if it's a whole new virus. Tetanus is caused by a bacteria called clostridium tetani which ofc is a bacteria which posses the power of mutation but can't mutate as rapidly as RNA viruses.
Simpler words influenza is a theif that robs you every week but changes his outfit so you never see him coming but tetanus is a dumb theif which doesn't change his attire when he tries to rob you and gets caught before he could rob you because he robbed you once and you remember his looks now(vaccine)
noobwithguns t1_jdp9a4f wrote
Reply to Why does tetanus vaccination lasts longer than influenza vaccination? by E-C-A
Influenza virus can easily mutate and change its spike proteins, this our B memory cells aren't able to bind to this new mutated virus and it's as if it's a whole new virus. Tetanus is caused by a bacteria called clostridium tetani which ofc is a bacteria which posses the power of mutation but can't mutate as rapidly as RNA viruses.
Simpler words influenza is a theif that robs you every week but changes his outfit so you never see him coming but tetanus is a dumb theif which doesn't change his attire when he tries to rob you and gets caught before he could rob you because he robbed you once and you remember his looks now(vaccine)