Table 2.
Comparison of EHS species detected in each facility between 2009 surveillance and 2012 clinical cases
| Facility | No. of rooms tested in 2009 | Species detected by surveillance in 2009 | Species detected in RP cases in 2012 |
| A | 14 | none | none |
| B | 5 | Hb, Hr | Hr, Ha |
| C | 19 | Hb, Hr, Ht, Hh | Hr, Ha, Ht, Hh, Hma |
| D | 14 | Hb, Hr, Ht, Hh, Hm | Hr, Ha, Ht, Hh, Hm |
| E | 3 | none | none |
| F | 2 | none | Hr, Ha, Ht |
| G | not applicable | not applicable | Hr, Ha, Ht, Hh |
Ha, H. apodemus; Hb, H. bilis; Hh, H. hepaticus; Hm, H. mastomyrinus; Hr, H. rodentium; Ht, H. typhlonius
Hm was not detected in our clinical RP cases in facility C, but Hm was detected during our 2011–2012 investigation of clincally normal animals from the Lpd colony. Hm detection differed between 2009 and 2012 for this facility, which may represent new infection but also could indicate poor transmission to sentinels and lower overall prevalence.
A comparison of EHS prevalence based on fecal PCR assays of dirty-bedding sentinels in 2009 shows a different EHS distribution from that detected in clinical RP cases in 2012. Facility G was not part of the 2009 survey, but speciation results are included here for comparison of EHS distribution.