Staphylococcus aureus dispersal from healthy volunteers

详细信息    查看全文

• 作者：Katy-Anne Thompson ; MSc^a ; ^{Katy-Anne.Thompson@phe.gov.uk" class="auth_mail} ; Vicky R. Copley ; PhD^b ; Simon Parks^a ; James T. Walker ; PhD^a ; Allan M. Bennett ; MSc^a
• 关键词：MRSA ; Andersen ; Sartorius ; Visitor
• 刊名：American Journal of Infection Control
• 出版年：March, 2014
• 年：2014
• 卷：42
• 期：3
• 页码：260-264
• 全文大小：308 K

文摘

| Figures/TablesFigures/Tables | ReferencesReferences

Background

Understanding Staphylococcus aureus dispersal from human carriers is vital for preventing transmission and colonization of this organism in health care settings. This study investigated the S聽aureus supershedder hypothesis in relation to attributes of healthy volunteers.

Methods

Microbial aerosol generation from volunteers was quantified within a controlled environmental chamber during walking or sitting activities. Biological air samplers were used to determine numbers of total S aureus colony-forming units disseminated during these activities.

Results

A total of 17 volunteers was sampled on 3 occasions. Hairstyle (long hair tied up or a shaved head) was the only significant predictor of dissemination of S aureus (5% significance level). No other significant effects were found at the 5% level. A negative binomial distribution provides the best fit with respect to S aureus.

Conclusion

We found that, in the context of our small sample size, hairstyle (long hair tied up or a shaved head) statistically affected levels of bacteria shed from volunteers. However, we found no evidence for 鈥渟upershedders鈥?or 鈥渃loud adults,鈥?suggesting they are at an extreme end of a continuous distribution.