First thing to say is that Action Nugget in no way endorses either immunizing or not immunizing your kids. This blog post is about the presentation of data in the current discussion of this topic.
1) This is the graphic that triggered the discussion. It's been floating around the internet for a while and purports to show incidences of death from various diseases in Australia:
As you can see, in most cases, immunization had little practical effect on the effect of these diseases. Let's leave aside whether it's actually a good thing for kids to be exposed to bugs because it may increase their adult immune system. This is just about how the data's presented. It seems pretty clear here, right?
You can see that the fatality rate due to most of the diseases that afflict our children were declining even without immunizations in the case of Scarlet Fever !
Pretty clear.
2) Er, maybe....
Let's dig down into a different scale in detail. These data are from
CDC and refer to the US only.
 |
| Measles, 1950-2009 (CDC) |
It's pretty clear that even though death from measles was on the decline anyway due to better understanding of hygiene and other factors, there were still nearly half a million incidences of measles in 1960. After introduction of the vaccine in 1963, incidences dropped to less than fifty thousand in 1970 and then less than one hundred in 2009.
Even though death from Measles, for example, was thankfully in a rapid decline, introduction of the vaccine effectively killed it off altogether, in the US at least.
Pretty clear now?
3) This is where it gets interesting.
In the first set of graphs above, we saw that deaths from the six big diseases were rapidly declining anyway and the vaccine didn't change much.
In the second graph though, we saw that the vaccine pretty much killed off any remaining instances of some of those diseases. Here's where the interpretation comes in.
'Measles? That's another one with extremely rare serious complications, ones that can be dealt with in most cases thanks to contemporary medical technology. So why inject it into a baby together with 2-3 other viruses to maybe (doesn't always work) give protection? Why not just let nature run its course?'
This is the real crux of the matter. Again, we're not saying do or don't. Just use the expert opinions around you to help interpret the data.
Marketers, that's what we're here for!