Story perspectives

San Francisco Reports First Case of Severe Mpox Variant

4/17/2026

Summary

Story summary

San Francisco has confirmed its first case of mpox clade I, a variant linked to more severe illness.
The patient is an unvaccinated adult who was hospitalized after close contact with an international traveler.
The Centers for Disease Control and Prevention (CDC) recommends two-dose JYNNEOS for high-risk groups.
Vaccination is available through health providers, community clinics, and pharmacies.
Public health officials continue to monitor the situation and investigate potential contacts.

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Story summary

San Francisco has confirmed its first case of mpox clade I, a variant linked to more severe illness.
The patient is an unvaccinated adult who was hospitalized after close contact with an international traveler.
The Centers for Disease Control and Prevention (CDC) recommends two-dose JYNNEOS for high-risk groups.
Vaccination is available through health providers, community clinics, and pharmacies.
Public health officials continue to monitor the situation and investigate potential contacts.