Table 1.
Detection of persistent presence of spotted fever group rickettsiae in Rhipicephalus sanguineus, California*
| Date collected | Source of ticks | No. collected | Positive by SYBR Green PCR | No. sequenced | Rickettsial prevalence, % | ||
|---|---|---|---|---|---|---|---|
| Total PCR positive | Female (no. positive/no. tested) | Male (no. positive/no. tested) | |||||
| 3/24/2008 | Dog B | 15 | 12 | 9/12 | 3/3 | 5 | 80 |
| 4/3/2008 | Property yard | 50 | 32 | 2/2 | 30/48 | 4 | 64 |
| 4/13/2009 | Dog A | 23 | 0 | 0/11 | 0/12 | 0 | 0 |
| 4/16/2009 | Dog A | 48 | 17 | 9/24 | 8/24 | 8 | 35 |
| 4/17/2009 | Dog C | 31 | 6 | 1/8 | 5/23 | 1 | 19 |
| 4/20/2009 | Dog C | 155 | 35 | 4/40 | 31/115 | 12 | 23 |
| 4/20/2009 | Dog D | 10 | 3 | 1/5 | 2/5 | 1 | 30 |
*
PCR = polymerase chain reaction.