Home Educational How Do We Know We’re Sick? Crash Course Outbreak Science #06 How Do We Know We’re Sick? Crash Course Outbreak Science #06 Learning A New Way Oct 12, 2021 0 Comments Tweet on Twitter Share on Facebook Pinterest Check Out Our Recommended Resources Page See Some AMAZING Classes On DIY! antibodies antibody test antigen test clinical symptomatology Crash Course crashcourse diagnostic testing differential disease reservoir education epidemic epidemiology Hank Green hospital illness John Green medical history outbreak pandemic pathogen PCR test reservoir sensitivity sign specificity susceptibility symptom variable presentation vlogbrothers