Swiss agent Rickettsia helvetica Beati et al. 1993 Dong X. El Karkouri K. Robert C. Gavory F. Raoult D. Fournier P.-E. Genomic comparison of Rickettsia helvetica and other Rickettsia species. 2012 194 10 2751 2751 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 10.1128/JB.00299-12 22535934 Burgdorfer W. Aeschlimann A. Peter O. Hayes S.F. Philip R.N. Ixodes ricinus: vector of a hitherto undescribed spotted fever group agent in Switzerland. 1979 36 4 357 67 Acta Tropica Acta Trop 0001-706X 44100 TODO (parker): This may be equivalent to the type strain C3. E-mailed Eduoard Fornier for clarification. Isolated from Ixodes ricinus (tick) in Switzerland, 1979. C9P9 available from Unité des Ricketsies, Faculté de Médecine, Université de la Méditerrannée, Marseille, France or Rocky Mountain Laboratories, Hamilton, Montana, USA. P9 specifies the female tick that the strain was isolated from.