TABLE 2.
Strain-specific infection rates in Dermacentor andersoni ticks fed on superinfected or single-strain-infected Anaplasma marginale hosts
| Infection group | % of infected ticksa (no. infected/total no.)
|
||||
|---|---|---|---|---|---|
| Single-strain-infected animals
|
Superinfected animals
|
||||
| 6170 | 6171 | 6175 | 6187 | 6188 | |
| Vaccine strain | |||||
| Single-strain infection | 45 (54/120) | 30 (36/119) | 11 (13/118) | 13 (15/116) | |
| Coinfection | 27 (32/119) | 64 (75/118) | 17 (20/116) | ||
| Total | 45 (54/120) | 57 (68/119) | 75 (88/118) | 30 (35/116) | |
| St. Maries strain | |||||
| Single-strain infection | 80 (38/48) | 13 (15/119) | 17 (20/118) | 23 (27/116) | |
| Coinfection | 27 (32/119) | 64 (75/118) | 17 (20/116) | ||
| Total | 80 (38/48) | 40 (47/119) | 81 (95/118) | 40 (47/116) | |
a
Percentage of fed ticks that acquired infection.