Table 1 Results of Rickettsia spp. testing by burn treatment (burned surrounded by burned [BB], burned surrounded by unburned [BUB], unburned surrounded by burned [UBB], and unburned surrounded by unburned [UBUB]).

From: Frequent Prescribed Fires Can Reduce Risk of Tick-borne Diseases

Tick species

Treatment

Total*

Adult

Nymph**

Larvae**

Organisms DetectedÆ—

A. americanum

BB

1/1 (100)

1/1 (100)

—

—

1 R. amblyommatis

BUB

19/219 (8.7)

9/15 (60.0)

4/21 (19.0)

6/183 (3.3)

16 R. amblyommatis

UBB

16/350 (4.6)

8/13 (61.5)

2/16 (12.5)

6/321 (1.9)

13 R. amblyommatis

UBUB

589/4037 (14.6)

280/441 (63.5)

212/1152 (18.4)

97/2444 (4.0)

412 R. amblyommatis

1 Rickettsia sp. (95%, 98%, DQ092218)

A. maculatum

BB

7/37 (18.9)

7/36 (19.4)

0/1 (0)

—

1 R. amblyommatis

1 R. parkeri

BUB

4/30 (13.3)

4/29 (13.8)

0/1 (0)

—

 

UBB

2/6 (33.3)

2/5 (40.0)

0/1 (0)

—

 

UBUB

1/3 (33.3)

1/3 (33.3)

—

—

1 R. amblyommatis

I. scapularis

BB

0/2 (0)

0/2 (2)

—

—

 

BUB

9/37 (24.3)

9/17 (52.9)

—

0/20 (0)

1 R. cooleyi

6 Rickettsia sp. TR-39

UBB

42/100 (42.0)

42/99 (42.4)

0/1 (0)

—

1 R. amblyommatis

3 R. monacensis

17 Rickettsia sp. TR-39

2 Rickettsia sp. (96–98%, KC003474)

1 Rickettsia sp. (99%, JN190456)

UBUB

68/132 (51.5)

67/128 (52.3)

1/4 (25.0)

—

2 R. cooleyi

1 R. monacensis

24 Rickettsia sp. TR-39

4 Rickettsia sp. TX140 (99–100%, EF689739)

1 Rickettsia sp. (84%, KC003474)

1 Rickettsia sp. (97%, EU283838)

D. variabilis

BB

—

—

—

—

 

BUB

2/8 (25.0)

2/8 (25.0)

—

—

1 Rickettsia sp. TR-39

1 R. amblyommatis (79%, GQ302891)

UBB

1/9 (11.1)

1/9 (11.1)

—

—

1 R. rhipicephali

1 R. amblyommatis

UBUB

7/18 (38.9)

7/18 (38.9)

   
  1. *Number of infected ticks (or pools when applicable) over total ticks tested (percent positive).
  2. **For nymphs and larvae, indicates minimum infection prevalence.
  3. Æ—For 2010 & 2011, some positive samples were unsequenceable or were not sent for sequencing. For 2011 only, all samples that were sequenced had a minimum of 95% identity unless otherwise noted.