期刊
MICROBIAL DRUG RESISTANCE
卷 24, 期 4, 页码 434-446出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/mdr.2017.0063
关键词
carriage; MRS; mecA; risk factors; occupational health
资金
- CIISA
- Fundacao para a Ciencia e a Tecnologia [UID/CVT/00276/2013, SFRH/BD/113142/2015]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/113142/2015] Funding Source: FCT
Methicillin-resistant staphylococci (MRS), namely Staphylococcus aureus (MRSA) and Staphylococcus pseudintermedius (MRSP), are opportunistic agents of great importance in human and veterinary medicine. The aims of this study were to investigate the frequency, persistence, and risk factors associated with nasal colonization by MRS in people in daily contact with animals in Portugal. Seventy-nine out of 129 (61.2%) participants were found to be colonized by, at least, one methicillin-resistant (MR) staphylococci species (MR Staphylococcus epidermidis [n=68], MRSA [n=19], MR Staphylococcus haemolyticus [n=7], MRSP [n=2], and other coagulase-negative staphylococci [n=4]). Three lineages were identified among the MRSA isolates (n=7): the major human healthcare clone in Portugal (ST22-t032-IV, n=3), the livestock-associated MRSA (ST398-t108-V, n=3), and the New York-/Japan-related clone (ST105-t002-II, n=1). MRSP isolates belonged to the European clone ST71-II-III. We identified two risk factors for nasal colonization by MRS in healthy humans: (i) being a veterinary professional (veterinarian and veterinary nurse) (p<0.0001, odds ratio [OR]=6.369, 95% confidence interval [CI, 2.683-15.122]) and (ii) have contacted with one MRSA- or MRSP-positive animal (p=0.0361, OR=2.742, 95% CI [1.067-7.045]). The follow-up study revealed that the majority (85%) remain colonized. This study shows that MRS in veterinary clinical practice is a professional hazard and highlights the need to implement preventive measures to minimize spread.
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