Brucella

Brucella is a genus of Gram-positive, nonmotile, aerobic bacteria that do not form spores, are in an unsporulated state, or are found inside phagocytic cells. The genus is united under the name Brucella spp. bacteria with the smallest size and vary widely in their morphological, cultural, biochemical and antigenic characteristics. (Link) Currently, various methods are used to identify Brucella, including molecular diagnostics. (Link)

Typical clinical manifestations are: fever, chills, myalgia, arthralgia, local abscesses, lymph nodes are affected. (Link,