Mugshot - GCSE Biology - Vaccination

Last time, the bouncer. This time, the photo. The sequel to Not on the List: how a vaccine puts the pathogen's mugshot on the wall, so the second time it turns up, it doesn't get past. AQA GCSE Biology (8461) 4.3.1.7 Vaccination: • Why the first infection makes you ill: the delay while white blood cells make the right antibody • The vaccine: small quantities of dead or inactive pathogen, injected • White blood cells make antibodies that fit the antigens; the vaccine contains no antibodies • Same pathogen again: white blood cells respond quickly with the right, specific antibodies, so you don't get ill • Immunity is not a pile of antibodies in your blood • Herd immunity: immunise a large proportion and the spread is reduced, protecting those who can't be vaccinated • Smallpox wiped out; whooping cough returning when UK vaccination fell in the 1970s • Exam tips from the examiners' report: say white blood cells, not "the body"; say specific antibodies; say injected • Beyond the spec: memory cells are lymphocytes; RNA and protein-fragment vaccines Chapters 0:00 Intro 0:03 Last time, the bouncer 0:13 The first time 0:37 Needles and queues 0:45 Chorus: Mugshot 1:08 The jab 1:48 Chorus 2:09 Immunity and memory 2:33 Read the question 2:58 Herd immunity 3:24 Beyond the spec 3:36 Questions and answers 4:04 Final chorus 4:28 Still scared of needles From the album High School Bio: The Mix Tape by Myles Kiely · Econ Myles · @econmyles High School Revision You Can Sing #GCSEBiology #AQA #Vaccination #HerdImmunity #RevisionSong #GCSE