Tak se koukněte např. do Brazílie v roce 2010:
“We describe microbiological, clinical and epidemiological aspects of a diphtheria outbreak that occurred in Maranhão, Brazil. The majority of the 27 confirmed cases occurred in partially (n = 16) or completely (n = 10) immunized children (n = 26).
...
Three cases resulted in death, two of them in completely immunized children.”
http://www.ncbi.nlm.nih.gov/pubmed/25703400
A v podrobné zprávě se pak píše:
"one child was partially immunized, i.e. did not receive all doses of DTP vaccine provided in the Brazilian immunization schedule [13], and the other two were completely immunized"