This study evaluated tick-borne encephalitis (TBE) surveillance case classification in Poland using national data from 1999 to 2002. Among 607 reported cases, the majority occurred in men and rural residents, with most patients presenting with meningitis-like symptoms. When we applied standardized case definitions, only about 25% of cases could be classified as confirmed; the remainder were classified as probable or possible, primarily due to limited access to specific laboratory testing. We also uncovered significant regional disparities in reporting and diagnosis, largely driven by unequal laboratory infrastructure and varying clinical practices. Ultimately, we concluded that improving TBE monitoring across Poland requires standardized diagnostic protocols and broader access to laboratory testing.
This was my very first publication after returning from my Master’s studies in Albany, NY. Based on my MS thesis project, the investigation was guided by two incredible mentors from the US, Dale Morse and Millie Eidson. The timing proved ideal, as European public health institutions were just beginning to push for uniform, standardized case definitions across EU Member States. The paper was published alongside an editorial and went on to be widely cited over the following years!