Oops, it doesn't look like 'vaccination immunization day' is a national day..

Other days

reading

Reading Day
promposal

Promposal Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
brow

Brow Day
emoji

Emoji Day
tell a fairytale

Tell A Fairytale Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
blanket fort

Blanket Fort Day
me

Me Day
frozen yogurt

Frozen Yogurt Day