People who get this disease must
stay away from others to help prevent it from spreading. If there has been a
smallpox outbreak and you think you might have been exposed, call your local
health department or 911. Do not go
directly to a health facility, because you could pass the disease to other
How is smallpox diagnosed?
If a doctor suspected a case of smallpox, a blood
test would be needed to confirm the diagnosis. A confirmed case of smallpox
would be considered a worldwide health emergency. In the U.S., state and
federal health officials would quickly take action. They would keep anyone who
might have been exposed away from others.
If a smallpox outbreak
had been confirmed, a doctor in the outbreak area could diagnose smallpox
without a lab test. The doctor would look at the rash and ask about symptoms
and possible exposure to the disease.
How is it treated?
There is no known cure for
smallpox. Treatment includes drinking plenty of fluids and taking medicines to
control pain and fever.
To prevent the spread of the virus, an
infected person must be kept away from other people until he or she is no
Can smallpox infection be prevented?
have survived smallpox cannot get it again.
Also, there is a
smallpox vaccine(What is a PDF document?). It has vaccinia virus in it, which is like the smallpox virus
but safer. If you get the shot before you've been exposed to smallpox, it will
likely protect you for at least 3 to 5 years. And having a second shot later
can protect you for an even longer period of time.
The shot works
even if you don't get it in advance. Most people who get the smallpox shot
within 3 days after they've been exposed to the virus will have no symptoms or
will have symptoms that aren't as severe. Getting a shot 4 to 7 days after
exposure may also help.1
People who have very close contact with a person who has gotten a smallpox vaccine can get an infection from the virus used in the vaccine. The infection usually causes a minor skin rash and is not smallpox. So the site where the smallpox vaccine was given should be covered until the scab falls off.
In the past,
when a smallpox infection was diagnosed, infected people were kept away from
others to prevent the spread of infection. Everyone who might have been exposed
to the virus was then vaccinated. This practice, called ring vaccination,
played a key role in wiping out smallpox. Many experts think it would be better
to carry out ring vaccination before mass vaccination if there were a case