Table 2.
Pathogen Distribution Profile Over 12 Weeks Demonstrating Change From an Initial Cryptosporidium spp.–Predominant Outbreak in Weeks 1–4 to a Mixture of Pathogens With Cryptosporidium spp. in a Minority of Cases in Weeks 7–8; Other Pathogen Distributions Are as Listed in Table 1
| Week | No. | Group 1 Cryptosporidium spp. Only, No. (%) |
Group 2 Cryptosporidium spp. and Other Pathogens, No. (%) |
Group 3 Other Pathogens Only, No. (%) |
No Pathogens, No. (%) |
Repeat Samples |
|---|---|---|---|---|---|---|
| 1–2 | 5 | 5 (100) | 0 | 0 | 0 | 0 |
| 3–4a | 36 | 16 (44) | 14 (39) | 3 (8) | 3 (8) | 7 |
| 5–6 | 36 | 11 (31) | 8 (22) | 7 (19) | 10 (28) | 7 |
| 7–12 | 29 | 6 (21) | 3 (10) | 16 (55) | 4 (14) | 4 |
| Total | 106 | 38 (36) | 25 (24) | 26 (25) | 17 (16) | 18 |
PCR BioFire FilmArray test results from February 21, 2023. Five samples collected before FilmArray capability were tested on February 21, 2022, alongside other freshly collected samples. Thirty of 36 (83%) of all samples tested in weeks 3–4 contained Cryptosporidium spp. compared with 9/29 (31%) in weeks 7–8.
Abbreviation: PCR, polymerase chain reaction.
aFebruary 21, 2022—beginning of week 3 when all PCR testing began.