1 David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, United States; Acute Communicable Disease Control Program, Los Angeles County Department of Public Health, Los Angeles, CA, United States.
2 Acute Communicable Disease Control Program, Los Angeles County Department of Public Health, Los Angeles, CA, United States.
3 Acute Communicable Disease Control Program, Los Angeles County Department of Public Health, Los Angeles, CA, United States. Electronic address: pgounder@pH.lacounty.gov.