In a different thread, you mentioned that you don't think replacement is a problem with the Hib vax. Have you looked over the evidence indicating that replacement with Hib might really be happening?
However, strain replacement of Hib with serotype f and non-typeable strains in children under 5 years was documented.
In addition to the proportional increase in cases of non-type b Haemophilus influenzae disease in the post-H. influenzae type b vaccine era, the incidence of invasive H. influenzae disease was found to be approaching the rates of H. influenzae type b disease that were documented in the prevaccine period. Fifty-six percent of invasive disease now occurs in individuals aged >10 years.
There's a lot more evidence, too. I'm just trying to keep it shortish here.
The idea that replacement with h-flu is a real phenomenon seems to be an emerging scientific consensus. For several years, I've been regularly checking into google scholar to get updates on this and a few other issues.
Do you do anything similar?
Why do you think strain replacement with h-flu isn't real?