Fair enough, but then why isn't it in the meme? I mean, they could still put it in there and put an asterisk with *current vaccine not as effective or *population much higher now or does that somehow take away from their meme impact?
The argument re: effectiveness and population, sure, that's perhaps part of the picture (ie.the aP is deemed less effective, vaccine-induced immunity wanes earlier, and the population is larger now, so that's why the numbers are up). Suspected underreporting of pertussis cases in teens and adults, which I have seen reference to in the literature in the past, would also affect that reported cases stat. To what degree it would rise, I suppose it's debatable. Personally, I find the aP effectiveness argument perhaps elides the role of pathogen adaptation: not so much a case of the aP being "less than" than the bacterial evolution being more of a factor. Mooi and others have documented that only small changes are required by the bacteria to induce selective clonal sweeps. Van Gent et al (2012) detected four large shifts in the Dutch pertussis population between 1949-2010. Seeing as the Netherlands did not introduce the aP (ACV) until 2005, and van Gent et al (2012) can document the first shift in the genome to 12 years after the introduction of the WCV in 1953. So, what's the point? Well, the pertussis bacteria can adapt via small mutations, was already doing so in the 1960s, well before ACVs were in use in the Netherlands, and from this perspective, it's not so much that the ACV is so much less effective than the WCV--true--but the study illustrates that the bacteria was already beginning to adapt in novel ways subsequent to the initiation of the WCV vaccination program. I think what needs to be addressed in any argument of perceived effectiveness is how much vaccination programs are driving genetic change in the bacteria. And yes, there is ample material out there for both sides--a ten minute Scholar search nets both proponents and researchers who don't believe it's that relevant. Still, not too far a stretch, in the face of resistant bacteria and antibiotics as an example, to wonder about how the degree of intervention has influenced the situation as it stands today.
As for the recent added meme, decidedly pro-vaccine, get UTD or we'll keep your tax benefits Australia, has stopped supporting Tdap for parents and carers of newborns, saying it was not effective.
Hope some folks get on with some good memes. Ha, in a thread about memes and infographics, I'm afraid I don't have any on offer.
Edited by japonica - 10/24/13 at 7:06pm