TABLE 4.
Effectiveness of a diagnosis-euthanasia strategy on the occurrence of Cryptosporidium infection in snakes at the Saint Louis Zooa
| Sample date | No. of samples | Total no. of positivesb | No. of isolates positive for the indicated parasite
|
|
|---|---|---|---|---|
| C. serpentis | C. saurophilum | |||
| May 1999 | 10 | 5 | 5 | |
| June 1999 | 17 | 8 | 7 | 1 |
| September 1999 | 8 | 0 | ||
| November 1999 | 10 | 0 | ||
| December 1999 | 10 | 1 | 1 | |
| March 2000 | 8 | 0 | ||
| April 2000 | 9 | 0 | ||
a
Euthanasia of infected animals started in March 1999 after the initial identification of cryptosporidiosis in snakes and lizards at the zoo between December 1998 and January 1999.
b
C. muris and the C. parvum mouse genotype are excluded from the number of positives.