It was a great and elevating experience to give a plenary lecture on the prestigious Potsdam Symposium, for top researchers in the field of tick-borne infections. I presented the results of freshly completed seroprevalence survey among inhabitants of 7 Polish provinces, using archived serum specimens. As a result of this presentation, I was invited to prepare a full manuscript which was peer reviewed and published in the supplement of the International Journal of Medical Microbiology.