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Printable Fact Sheets:
California
Department of Health Services - Smallpox Fact
Sheet 
CDC
Vaccine Information

Links to useful websites
CDC
- Smallpox Webpage
CDC
Smallpox Vaccination Program
Guidance.
This document contains links to many different websites
that contain information for the public on smallpox
(English and Spanish).
Information on Smallpox
Smallpox is a
serious, contagious and often fatal disease. There is no
treatment for smallpox. The only prevention is
vaccination. Smallpox outbreaks have occurred from time
to time for thousands of years. In 1980, the disease was
declared eradicated following worldwide vaccination
programs. The last case of smallpox in the United States
was in 1949. The last naturally occurring case in the
world was in Somalia, Africa in 1977.
So why is smallpox being
talked about now?
In the aftermath of
September 2001, the U.S. government is taking precautions
to be ready to deal with a bioterrorist attack using
smallpox as a weapon. At this time we have no information
that suggests an imminent smallpox threat. However,
should there be a suspected case of smallpox, it would be
immediately reported to the local health department,
which is responsible for notifying the state health
department, the FBI, and local law enforcement. The state
department, in turn, would notify the federal Centers for
Disease Control and Prevention (CDC).
Frequently
asked questions and answers on smallpox printable
version

What is
smallpox?
How can I
differentiate smallpox from chickenpox?
How is smallpox
spread?
If someone
comes in contact with smallpox, how long does it take to
show symptoms?
Is smallpox
fatal?
Is there any
treatment for smallpox?
How can we stop
the spread of smallpox after someone comes down with
it?
Does the
Department of Health Services have a smallpox
plan?
Is a vaccine
for smallpox currently available?
If someone is
exposed to smallpox, is it too late to get a
vaccination?
Should
I get vaccinated against smallpox?
What are the
side effects of the smallpox vaccines?
What are the
risks of the smallpox vaccines?
How much
smallpox vaccine is available in case of a bioterrorism
attack using smallpox?
If people got
the vaccination in the past when it was used routinely, will
they be immune?
Who will
decide who should be vaccinated and when? Will vaccinations
begin before a smallpox attack or after?
Who should not
get the smallpox vaccine?
Will
antibiotics like ciprofloxacin protect me against
smallpox?
Where can I
get more information about smallpox?
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What
is smallpox?
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Smallpox is a
contagious disease caused by the variola virus.
Early symptoms include high fever and fatigue. The
virus then produces a reddish rash, particularly on
the face, arms and legs. The resulting spots become
filled with clear fluid, and later, pus. A crust
forms over the smallpox sores and then a scab that
eventually dries up and falls off. Only after all
scabs have fallen off is the person no longer
contagious.
More Information: Smallpox Overview Fact
Sheet
English
Spanish
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How
can I differentiate smallpox from
chickenpox?
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Chickenpox is the
most important disease likely to be confused with
smallpox. Several particular points that help to
differentiate smallpox from chickenpox include the
following:
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In smallpox,
fever is present for 2 to 4 days before the rash
begins; while with chickenpox, fever and rash
develop at the same time.
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All the pocks
of the smallpox rash are in the same stage of
development on any given part of the body and
develop slowly. In chickenpox, the rash develops
more rapidly, and vesicles, pustules, and scabs
may be seen at the same time.
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The
distribution of rash is also important in
diagnosis. In smallpox, more pocks usually occur
on the arms and legs than on the body. In
chickenpox, more pocks occur on the
body.
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In smallpox,
lesions are commonly found on the palms and
soles. In chickenpox, however, there are very
few or no lesions on the palms and
soles.
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Death following
smallpox is not uncommon, while in chickenpox
death is very rare.
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How
is smallpox spread?
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In most cases,
smallpox is spread from one person to another by
face-to-face contact for several hours. During
close contact, a "healthy" person can breathe in
respiratory droplets from a sick person.
Individuals with smallpox are most infectious
during the first week of illness.
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If
someone comes in contact with smallpox, how long
does it take to show symptoms?
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Following exposure,
the incubation period is about 12 days, but can
range from 7 to 17 days.
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Is
smallpox fatal?
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The majority of
patients with smallpox recover, but death may occur
in as many as three out of every 10 individuals who
become sick with the disease.
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Is
there any treatment for smallpox?
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There is currently
no proven treatment for smallpox. Patients with
smallpox may feel better from therapy such as
intravenous fluids, medicine to control fever or
pain, and antibiotics for any secondary infections
that may occur. However, if the vaccine is given
within four days after exposure to smallpox, it can
prevent illness or lessen its severity.
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How
can we stop the spread of smallpox after someone
comes down with it?
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Patients with
symptoms of smallpox are capable of spreading the
virus. Patients should be isolated so that they
will not continue to spread the virus. In addition,
individuals who have come into close contact with
smallpox patients should be vaccinated immediately
and closely watched for symptoms of smallpox.
Vaccination and isolation of contacts are the most
effective strategies for stopping the spread of
smallpox.
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Does
the California Department of Health Services (DHS)
have a smallpox plan?
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The Centers for
Disease Control (CDC) has been preparing for the
remote possibility of an outbreak of smallpox as an
act of terror. As part of the ongoing effort to
increase preparedness, the CDC has distributed a
draft smallpox preparedness plan. The
State of California
DHS and
local health departments have developed a
comprehensive state plan. Federal, state, and local
health officials, working with health care
providers, will continue to improve this plan and
our readiness to respond to the possible
reintroduction of smallpox.
In addition,
doctors, health professionals and hospital
personnel around the world have been trained to
identify infectious diseases, verify their
diagnosis and then respond accordingly. The same
system would identify any possible outbreak of
smallpox even if the virus were deliberately spread
to cause harm. The public health system would then
be mobilized to trace all known contacts of the
infected person and vaccinate them to prevent more
cases of smallpox from developing.
If this is done
rapidly and effectively, the number of cases could
be kept to a minimum and the outbreak would be
contained. This was the approach that successfully
eradicated the disease. The key is a good disease
detection system and a rapid response to infectious
diseases, no matter what their cause.
At this time,
several governments have started to examine the
potency and levels of their smallpox vaccine
stocks, and to consider whether, and under what
circumstances, to obtain additional
supplies.
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Is
a vaccine for smallpox currently
available?
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There is a vaccine
against smallpox and it was a key tool in the
eradication of the disease. The vaccine does not
contain the variola virus that causes smallpox, but
a closely related virus called vaccinia. When this
vaccine is given to humans, it protects them
against smallpox. However, it can have very serious
side effects, which in extreme cases can be fatal.
It therefore has not been recommended for the
general public since smallpox was
eradicated.
More Information: Vaccine Overview Fact Sheet
English
Spanish
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If
someone is exposed to smallpox, is it too late to
get a vaccination?
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A person exposed to
smallpox has between 4-7 days to be vaccinated
after exposure.
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Should
I get vaccinated against smallpox?
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Vaccination is not
recommended at this time and the vaccine is not
available to the public. Routine smallpox
vaccination was terminated in the U.S. in 1972
because the risk of complications outweighed the
threat of the disease. In the absence of a
confirmed case of smallpox anywhere in the world,
there is no need for the general public to be
vaccinated against smallpox. The CDC maintains an
emergency supply of vaccine that can be released if
necessary, since vaccination is still effective
after exposure has occurred.
More Information: Live Virus Vaccines and
Vaccinia
English | Spanish
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What
are the side effects of the smallpox
vaccines?
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Side effects from
successful vaccination, particularly in those
receiving their first dose of vaccine, include
tenderness, redness, swelling, and a lesion at the
vaccination site. In addition, the vaccination may
cause fever for a few days and the lymph nodes in
the vaccinated arm may become enlarged and
tender.
More Information: Reactions after Smallpox
Vaccination Fact Sheet
English | Spanish
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What
are the risks of the smallpox
vaccines?
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The overall risks
of serious complications of smallpox vaccination
occur more frequently in those receiving their
first dose of vaccine and among young children. An
estimated one to two deaths occur for every million
persons vaccinated. One of the most frequent
serious complications is encephalitis (brain
inflammation), which occurs in about one in 300,000
children who are vaccinated, and one in 200,000
vaccinated adults. Other vaccine-related adverse
events include generalized rash due to the vaccine
virus itself.
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How
much smallpox vaccine is available in case of a
bioterrorism attack using smallpox?
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The government
currently has 15 million doses which can be diluted
to 75 million doses and still retain its potency.
The drug company Aventis Pasteur has donated an
additional 80 million doses that could be used in
an emergency. The government is also buying 220
million doses, which are being made by a new
technique. Delivery of the new doses is expected at
the end of 2003.
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If
people got the vaccination in the past when it was
used routinely, will they be immune?
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Not necessarily.
Routine vaccination against smallpox ended in 1972.
The level of immunity, if any, among persons who
were vaccinated before 1972 is uncertain;
therefore, these persons are assumed to be
susceptible. For those who were vaccinated, it is
not known how long immunity lasts. Most estimates
suggest immunity from the vaccination lasts 3 to 5
years. This means that nearly the entire U.S.
population has partial immunity at best. Immunity
can be boosted effectively with a single
revaccination. Prior infection with the disease
grants lifelong immunity.
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Who
will decide who should be vaccinated and when? Will
vaccinations begin before a smallpox attack or
after?
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The CDC and the
U.S. Department of Health and Human Services are
considering various options for smallpox
vaccination. These possibilities include
recommending that some or all Americans be
vaccinated before a bioterrorist attack of smallpox
occurs, or waiting until such an attack actually
takes place. Getting the vaccine within four days
of exposure to the virus can prevent illness or
reduce its severity.
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Who
should not get the smallpox vaccine?
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Smallpox vaccine
should not be given to individuals with a history
or presence of eczema or other skin conditions,
pregnant women, or persons with immunodeficiency
diseases and among those with suppressed immune
systems as occurs with leukemia, lymphoma,
generalized malignancy, or solid organ
transplantation.
More Information: Fact Sheet - Who should
NOT receive the smallpox
vaccine
English| Spanish
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Will
antibiotics like ciprofloxacin protect me against
smallpox?
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No. Smallpox is a
virus; antibiotics such as ciprofloxacin will not
fight the infection.
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Where
can I get more information about
smallpox?
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Additional
information on smallpox can be obtained from the
following websites:
Centers
for Disease Control and Prevention
(CDC)
World
Health Organization (WHO)
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