Rickettsia parkeri and Candidatus Rickettsia andeanae in Gulf Coast Ticks, Mississippi, USA

Technical Appendix Figure. Distribution of Gulf Coast ticks and cases of rickettsiosis. Solid circles indicate confirmed cases of Rickettsia parkeri rickettsiosis, and open circles indicate probable cases of R. parkeri rickettsiosis noted by Paddock et al. (1) and Cragun et al. (2). A) Gray area indicates the most established distribution of Gulf Coast ticks (Amblyomma maculatum); asterisks (*) indicate documented collection of these ticks in incidental reports (may or may not reflect permanent populations). B) Gray shading indicates Mississippi counties where Goddard and Paddock reported the occurrence of Gulf Coast ticks and locations of previously reported cases of R. parkeri rickettsiosis in Mississippi (3). X indicates tick collection sites for this study. Map adapted with permission from Teel et al. (4).