The mecA gene was lost in 36 (14.4%) of 250 methicillin-resistant Staphylococcus aureus isolates after 2 years of storage at -80°C with the Microbank system (Pro-lab Diagnostics, Austin, Tex.). Further analysis of 35 of these isolates confirmed loss of the mecA gene in 32 isolates. This finding has important implications for the management of strain collections. Copyright,
Journal of Clinical Microbiology
Erasmus MC: University Medical Center Rotterdam

van Griethuysen, A., van Loo, I., van Belkum, A., Vandenbroucke-Grauls, C., Wannet, W. J., van Keulen, P., & Kluytmans, J. (2005). Loss of the mecA gene during storage of methicillin-resistant Staphylococcus aureus strains. Journal of Clinical Microbiology, 43(3), 1361–1365. doi:10.1128/JCM.43.3.1361-1365.2005