Mpox
Mpox Playbook – Updated August 16, 2024
About Mpox
- Mpox was historically known as monkeypox, but in 2022, the World Health Organization officially adopted the term mpox
- Mpox is a viral zoonotic disease caused by the mpox virus, part of the Orthopoxvirus genus (related to smallpox)
- There are two main genetic clades: Clade I is more virulent and historically associated with higher hospitalization and mortality rates. Clade II is less severe but is responsible for the global 2022-2023 outbreak
- Direct skin-to-skin contact with lesions or body fluids
- Respiratory droplets during prolonged face-to-face contact
- Fomite exposure, particularly via contaminated linens, bedding, or clothing
- Vertical transmission from pregnant individuals to the fetus
- Occasional animal-to-human transmission via contact with infected wildlife or exotic pets
- Incubation Period: 7 to 14 days (up to 21 days)
- Rash development may occur
- Lesions may be localized or generalized
- Antiviral and JYNNEOS vaccination can be used for treatment or post-exposure prophylaxis when indicated
- Prior to 2022, mpox cases were primarily linked to travel from endemic regions in Africa
- In 2022, mpox spread across dozens of countries without direct animal exposure, marking the first documented community transmission in non-endemic regions
Current Situation
- The United States reported tens of thousands of cases during the 2022 outbreak, with ongoing low-level community spread
- The first U.S. case of Clade I mpox was detected in November 2024, signaling the need for heightened clinical awareness. This resulted in the CDC issuing a HAN advisory (CDC, 2024).
- CDC continues to classify the overall risk to the United States public as low, but increased vigilance is recommended among healthcare providers
Mpox is a re-emerging infectious disease with outbreak potential that healthcare facilities must be prepared for, which includes a plan for:
- Screen individuals presenting with unexplained rash and lymphadenopathy, especially with recent travel or known close physicial contact
- Implement Standard and Contact Precautions with droplet or airborne precuations, depending on symptoms and procedures
- Ensure environmental cleaning and proper handling of contaminated laundry and formites
- Verify vaccination eligbility for staff and expossed patients
- Coordinate with public health authorities for testing and case report
APIC Resources and Tools
Click here to download the APIC Mpox Playbook
- Developed by the APIC Emerging Infectious Diseases Task Force to help infection preventionists rapidly activate Mpox prevention efforts
- The playbook is a concise workflow document that is designed to be user-friendly and operational for busy IPs.
Click here for a copy of the APIC and SHEA Mpox Webinar Slides
- In 2022, APIC and SHEA co-hosted a webinar on mpox, providing infection preventionists and healthcare epidemiologists with up-to-date guidance covering transmission, isolation, and vaccination guidance