%0 Journal Article %T Fever of unknown origin and Q-fever: a case series in a Bulgarian hospital %J Archive of "Caspian Journal of Internal Medicine". %D 2019 %R 10.22088/cjim.10.1.102 %X Fever of unknown origin (FUO) is a perplexing medical problem. The causes for FUO are more than 200 diseases. The aim of the study was to present human clinical cases of Coxiella burnetii infection debuting as FUO %K Fever of unknown origin (FUO) %K Coxiella burnetii %K Q-fever %K Bulgaria. %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6386320/