From the Los Angeles County Department of Public Health
From the Los Angeles County Department of Public Health
LAC DPH Health Update:
Mpox Clade I & II –
Prevention in the US and Before Travel
September 24, 2024
Prevention Strategies for Mpox, including Vaccinating People at Risk via Sexual Exposure, for U.S. Travelers Visiting Countries with Clade I Mpox Outbreaks.
The Centers for Disease Control and Prevention (CDC) has issued a health update to provide additional information regarding the ongoing outbreak of clade I mpox in Central and Eastern Africa and outline mpox prevention strategies for U.S. travelers to these countries. Healthcare providers are asked to recommend the 2-dose JYNNEOS vaccine series to any adult, regardless of gender identity or sexual orientation, if they are traveling to a country with ongoing human-to-human transmission of clade I mpox AND they anticipate having sex with a new partner.
Read the CDC Health Update (also available as a PDF).
In Los Angeles County, mpox cases have doubled with 52 cases reported in the last four weeks, compared to 24 during the previous four-week period. Approximately 70% of new cases in the past six months were individuals who were not vaccinated. JYNNEOS vaccine remains the most effective tool to prevent mpox among populations at elevated risk. See news release.
To date, all cases in LA County have been clade II mpox, however, providers should remain vigilant for clade I cases. If mpox is suspected in any person with travel to Africa within the past 21 days, please notify Public Health immediately to facilitate mpox clade-specific testing.
Los Angeles County DPH Acute Communicable Disease Control:
  • Weekdays 8:30am–5pm: call 213-368-7441.
  • After-hours: call 213-974-1234 and ask for the physician on call.
Long Beach Health and Human Services:
  • Weekdays 8am-5pm: call 562-570-4302.
  • After hours: call the duty officer at 562-500-5537.
Pasadena Public Health Department:
  • Weekdays 8am-5pm: call 626-744-6089.  
  • After hours: call 626-744-6043.
Visit the LAC DPH Mpox Provider Hub for local resources related to vaccination, testing, treatment, and reporting.
This message was sent by Dr. Sonali Kulkarni, Medical Director, Division of HIV and STD Programs, Los Angeles County Department of Public Health.
To view a printable PDF of this communication and other LAHAN communications, please visit publichealth.lacounty.gov/lahan.
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