1 Microbiology Department, Ramón y Cajal Hospital, Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Spain. Electronic address: ana.halperin@gmail.com.
2 Clinical Microbiology Unit, Public Health Regional Laboratory of the Community of Madrid, Directorate General of Public Health, Regional Ministry of Health of Madrid, Madrid, Spain.
3 Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Spain; Infectious Diseases Department, Ramón y Cajal Hospital, Madrid , Spain.
4 Clinical Microbiology Unit, Public Health Regional Laboratory of the Community of Madrid, Directorate General of Public Health, Regional Ministry of Health of Madrid, Madrid, Spain; CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.