Ask HN: How to keep track of vaccinations and shoe sizes of your family members?1 points·by sschmitt·작년·2 comments1 commentsPost comment[–]Haeuserschlucht·작년replyWho told you vaccinations were safe and helped your family members? Just curious.[–]sschmitt·작년replyhttps://polioeradication.org/about-polio/history-of-polio/