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Acute Communicable Disease Control

    

Acute Communicable Disease Control


Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, Room 212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856
E-Mail:acdc2@ph.lacounty.gov
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Acute Communicable Disease Control
Smallpox


NOTE TO ALL HEALTHCARE PROFESSIONALS:

    If you suspect that a patient is infected with Smallpox, immediately call Acute Communicable Disease Control to assist with diagnosis and implementation of infection control.

    (213) 240-7941 (7:30AM-5:00PM, Mon-Fri)
    (213) 974-1234 (After Hours, Emergency Operator)



Smallpox is a serious, contagious, and sometimes fatal infectious disease caused by the variola virus (an orthopoxvirus). There is no specific treatment for smallpox disease, and the only prevention is vaccination. The smallpox vaccine contains the “live” vaccinia virus—not dead virus like many other vaccines. The name smallpox is derived from the Latin word for “spotted” and refers to the raised bumps that appear on the face and body of an infected person.

There are two clinical forms of smallpox. Variola major is the severe and most common form of smallpox, with a more extensive rash and higher fever. There are four types of variola major smallpox: ordinary (the most frequent type, accounting for 90% or more of cases); modified (mild and occurring in previously vaccinated persons); flat; and hemorrhagic (both rare and very severe). Historically, variola major has an overall fatality rate of about 30%; however, flat and hemorrhagic smallpox usually are fatal. Variola minor is a less common presentation of smallpox, and a much less severe disease, with death rates historically of 1% or less.

Smallpox outbreaks have occurred from time to time for thousands of years, but the disease is now eradicated after a successful worldwide vaccination program. The last case of smallpox in the United States was in 1949. The last naturally occurring case in the world was in Somalia in 1977.

Vaccination against smallpox is no longer recommended for the general public due to erradication of natural disease. In the event of reintroduction of smallpox or any kind of smallpox emergency, vaccination against smallpox will be resumed as appropriate.


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