Description: Segment 1 A health visitor arrives at a flat to see a toddler who has whooping cough. The child is seen coughing violently. The narrator explains that whooping cough spreads easily and puts every child under 6-years-old at risk, and that parents should talk to their doctor about immunisation. Time start: 00:00:00:00 Time end: 00:01:11:03 Length: 00:01:11:03