I'll start, and maybe my colleagues would like to complement what I'm saying.
The problem is rising. Twenty years ago we were talking about this, but the rates of resistance that we are encountering now are frightening, and I'm talking worldwide, especially in the outer regions of Asia, in India for instance. There are cases of resistance that are very high in human populations. Some of the bacteria that you just named are problematic.
In Canada you've talked about staphylococcus aureus or MRSA. This is a serious problem. It's not going down. I think we should put more effort into this. This is a serious infection and the drug of choice is methicillin, and then infections are MRSA, methicillin resistant, so it does not function. In Canada this is an issue that we have to look at.
For streptococcus pneumoniae, now we have a vaccine. We were talking about alternatives. I think the development of a vaccine has been very helpful in decreasing the rates of streptococcus pneumoniae infections, but unfortunately, the vaccine is effective against the subgroups that were the most frequent, and now there's a deplacement. When you remove something, something else is coming. Unfortunately, these are becoming resistant, and so we will have to look at this.
With the E. coli and the shigella, I mean the problem is more acute in other places of the world. For instance, if you look in agriculture, four or five years ago they were still using some of the class 1 drugs that were helpful also for human medicine. Some of the percentage that you're highlighting were from this equilibrium between the use of those antibiotics that are used both in human medicine and agriculture. Now they've banned those antibiotics and now the resistance rates are going down. It's showing that good stewardship can make a difference.
In a nutshell, I think it's very important that we work on it because—and I'm not sure how to translate that in English. I'll say it in French and hopefully it will be translated:
“Prevention is better than cure.”
I think we have to be aware of this. We are aware and it's politically quite clear. It's also scientifically quite clear and we have to take action.