In the video with Edwards that has just come to light, CHD again uses the situation to discredit MMR vaccines. Someone from the camera asks Edwards if he had never had measles before, to which he replied that as a child he had received an MMR vaccine, although he did not know if he had received one or the recommended two doses.
“That doesn't work, right?” The off-camera person asks, referring to the MMR vaccine. “No, apparently not,” replies Edwards. “Just wear[s] out.”
It seems that Edwards had a breakthrough infection, which is rare, but it happens. They are more common in people who have only received one dose, which may be the case for Edwards.
A single dose of MMR is 93 percent effective against measles and two doses are 97 percent effective. In both cases the protection is considered lifelong.
Although up to 97 percent effectiveness is extremely protective, some people do not learn protective reactions and are still vulnerable to an infection during exposure. However, their diseases will probably be milder than when they were not vaccinated. In the video, Edwards described his illness as a 'mild case'.
The data on the outbreak shows the effectiveness of vaccination. From 18 April, health officials in Texas have identified 597 measles affairs, which leads to 62 hospital admissions and two deaths in school-going, non-vaccinated children without underlying medical conditions. Most cases have been with non -vaccinated children. Of the 597 cases, 12 (2 percent) had previously received two mmr doses and 10 (1.6 percent) had received one dose. The remaining 96 percent of the cases is either not vaccinated or have no vaccination.
Towards the end of the video, Edwards tells CHD that he “does what a doctor should do”.
