TABLE 1.
Detection of MRSA colonization by site in two unrelated hospital outbreaks among healthy newborns
| Outbreaka | Screening strategy | No. positive/no. of colonized infants tested | Sensitivity (%) |
|---|---|---|---|
| Hospital no. 1 (USA300-related outbreak) | Nares only | 17/25 | 68 |
| Umbilicus only | 14/23 | 61 | |
| Rectum only | 5/24 | 21 | |
| Nares and umbilicus | 23/23b | 100 | |
| Nares and rectum | 17/24b | 71 | |
| Hospital no. 2 (USA100-related outbreak) | Nares only | 18/25 | 72 |
| Umbilicus only | 18/25 | 72 | |
| Rectum only | 15/25 | 60 | |
| Nares and umbilicus | 23/25b | 92 | |
| Nares and rectum | 21/25b | 84 |
a
A total of 25 colonized infants (nasal and/or rectum and/or umbilicus) were detected in each of the two hospital outbreaks.
b
The number tested includes only those colonized infants tested at both sites.