It would cause tick saliva from causing infection for a lifetime, it matters so you can give a vaccine and not need to upkeep it especially in rural areas. It matters because it will prevent it forever. I think I’m thinking of something that lasts longer, someone mentioned a binding vaccine.
What does at risk of polio mean? I read that polio infections only affect Americans who aren’t vaccinated and touch recently vaccinated baby feces. If you aren’t in that situation you won’t get polio.
What does at risk of polio mean? I read that polio infections only affect Americans who aren’t vaccinated and touch recently vaccinated baby feces. If you aren’t in that situation you won’t get polio.