TABLE 3.
Prevalence at starting point and incidence rates of Leishmania infantum and Ehrlichia canis infection calculated by each diagnostic technique
| Parameter and date | % Incidencea (no. of dogs positive/total no. of dogs)
|
||||
|---|---|---|---|---|---|
|
Leishmania
|
IFAT for Ehrlichia | ||||
| ELISA | IFAT | DSb | PCR | ||
| Prevalence at starting point (March 2005) | 0 (0/204) | 0 (0/204) | 0 (0/204) | 0 (0/204) | 13.7 (28/204) |
| Intermediate incidence determination | |||||
| March 2005-November 2005 | 5.1 (9/178) | 2.0 (4/196) | 0 (0/196)c | 7.2 (14/195) | 11.9 (20/168) |
| November 2005-March 2006 | 2.0 (3/149) | 1.1 (2/187) | 2.2 (4/179)d | 0.6 (1/178) | 3.4 (5/146) |
| Yearly incidence rate | |||||
| March 2005-2006 | 5.0 (8/159) | 2.6 (5/192) | 2.1 (4/192) | 5.7 (11/193) | 13.8 (25/176) |
| March 2006-2007 | 5.9 (9/153) | 6.4 (11/173) | 0 (0/168) | 11.4 (19/166) | 9.3 (13/139) |
| Yearly recovery ratee (March 2006-2007) | 33.3 (2/6) | 25 (1/3) | All | 60 (6/10) | 25.6 (10/39) |
a
Data for dogs previously positive by the same test were excluded from the calculation.
b
Doubtful results were considered negative.
c
The results for 13 dogs were doubtful.
d
The results for four dogs were doubtful.
e
The rate was calculated at the number of dogs negative in 2007/number of dogs positive in 2006.