{"type":"rich","version":"1.0","title":"Ruby wrote","author_name":"Ruby (npub1e8…96eju)","author_url":"https://yabu.me/npub1e8kmagfapqw6f6pup8aekvme3svqcryfkys9y9ck4989959m2jlsm96eju","provider_name":"njump","provider_url":"https://yabu.me","html":"People knew to wash their hands since long ago and the polio vaccine came much later. Why was there a need for the vaccine to be invented?"}