First insights into the genetic composition of population circulating in Kosovo.

Tuberculosis incidence in Kosovo is among one of the highest in Europe at 33/100,000 citizens. While World Health Organization encourages epidemiological monitoring of tuberculosis transmission, studies regarding population structure in the Balkan region are limited. Here, we used spoligotyping and whole genome sequencing to describe the variation of strains circulating in Kosovo. We used samples isolated from patients in the period 2021/2022. We found that the vast majority of isolated strains belonged to spoligotype based Euro-American lineage, five strains belonged to East-Asian lineage, and one was . We described the general characteristics of the population in our study and identified chains of transmission based on whole genome sequencing data of selected samples. Our data will be a reference point for subsequent studies of population in Kosovo.