Major articleTrial to control an outbreak of Panton-Valentine leukocidin–positive methicillin-resistant Staphylococcus aureus at a boarding school in Japan
Section snippets
Population characteristics
We surveyed a 3-year boarding high school in Japan, attended by approximately 700 healthy students aged 15-19 years and staffed by approximately 300 teachers and other staff members. The students live and work closely together, and sometimes experience skin abrasions from participating in regular training and sports clubs, such as rugby, martial arts, and baseball. Students or staff who become ill usually visit a clinic within the school. But because the clinic does not provide detailed
Active surveillance and clinical features of SSTI patients at the boarding school
During active surveillance of the school between May and October 2008, we identified 21 individuals with an SSTI (all males, with no past history of recent hospitalization), including 19 students, 1 teacher (case 8), and 1 other staff member (case 16). MRSA strains were isolated from all 21 individuals. The incidence of MRSA causing SSTIs was calculated as 32.4 per 1,000 outpatients during the period (21 MRSA cases per 649 outpatients from the school) and was considered an outbreak. The
Discussion
We report an outbreak of a PVL-positive MRSA clone in a boarding school and a prospective follow-up study aimed at reducing the prevalence. Our original hypothesis, based on retrospective investigation of MRSA strain antibiograms, suggested dissemination of the same CA-MRSA strains. Active surveillance and examination of MRSA carriage in the school proved this dissemination. Systematic measures were then implemented to suppress the outbreak. This is a first report of systematic management of a
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This work was supported in part by a grant from the Japan Ministry of Defense and a Grant-in-Aid (S0991013) from the Ministry of Education, Culture, Sport, Science, and Technology, Japan for the Foundation of Strategic Research Projects in Private Universities. The views expressed in this article are those of the authors and do not reflect the official policies of the Japan Ministry of Defense or the Japan Self-Defense Forces.
Conflict of interest: None to report.