Table 1.
Original source and passage history of C. burnetii isolates used in this study.
| Genomic group | |||||
| RFLPa | IS1111 PCRb | Plasmid type | Isolate (Phase)c | Original source | Passage historyd |
| I | I | QpH1 | 9Mi/I/C7 (I) | Montana, tick, 1935 | 307GP/1TC/1EP |
| I | I | QpH1 | 9Mi/II/C4 (II) | Montana, tick, 1935 | 304GP/90EP/1TC/4EP |
| I | I | QpH1 | 9Mi/RSA 514 (II) | Montana, tick, 1935 | 307GP/1TC/1EP/343 days GP/5EP |
| I | I | QpH1 | Ohio (I) | Ohio, cow's milk, 1956 | 5EP/2GP/2EP |
| I | I | QpH1 | Australian QD (II) | Australia, human blood, ~1939 | 177EP |
| NDe | I | QpH1 | Scottish (ND) | Unknown | Unknown |
| ND | I | QpH1 | Idaho Q (ND) | Unknown | Unknown |
| ND | I | ND | 9Mi/Baca (II) | Montana, tick, 1935 | 307GP/1TC/1EP/4091 days TC |
| II | II | QpH1 | Henzerling RSA 343 (I) | Italy, human blood, 1945 | 6GP/25EP/1GP/4EP |
| II | II | QpH1 | Henzerling RSA 331 (II) | Italy, human blood, 1945 | 6GP/25EP/1GP/36EP |
| II | II | QpH1 | M44 (II) | Greece, human blood, ~1945 | 1GP/86EP/20GP/50MP/5EP |
| III | III | QpH1 | Q195 (ND) | Idaho, goat | Unknown |
| IV | IV | QpRS | KAV Q154 (I) | Oregon, human heart valve, 1976 | 1GP/3EP |
| IV | IV | QpRS | PAV Q173 (I) | California, human heart valve, 1979 | 2EP |
| IV | IV | QpRS | Priscilla Q177 (I) | Montana, goat cotyledon, 1980 | Unknown |
| ND | IV | QpRS | Q238 (ND) | Human heart valve, 1979 | 3EP |
| V | V | Plasmidless | Q229 (I) | Human heart valve, 1982 | Unknown |
| ND | V | ND | WAV (ND) | Human heart valve | Unknown |
| ND | V | ND | Q172 (ND) | Human placenta | 3MP/2EP |
| ND | I | ND | Qiyi (ND) | China, human bone marrow, 1962 | Unknown |
| ND | I | ND | Poker Cat (ND) | Nova Scotia, 1987 | Unknown |
a As determined in previous studies [4, 5].
b As determined in this study.
c Phase of isolate as determined by complement block titration, M.G. Peacock, Rocky Mountain Laboratories, Hamilton, Montana [4].
d Numbers indicate passage in: GP, guinea pig; TC, tissue culture; EP, embryonated eggs; MP, mice
e Not determined