To stop the spread, officials urge people to get vaccinated and to take precautions.
"The
best protection against mumps is the MMR vaccine," said Dave Johnson, a
spokesman for the Washington State Department of Health.
The Centers for Disease Control and Prevention recommends that children get two doses of the
MMR vaccine,
which protects against measles, mumps and rubella, though it is not
100% effective. Though not currently on-site in Washington, the CDC is
working closely with the state department of health and providing
technical assistance as needed, said Dr. Manisha Patel, a medical
officer at the CDC.
If you suspect
someone of having mumps, you should avoid kissing, hugging and other
close contact. Anyone feeling sick should contact their health care
providers, local health departments or the Family Health Hotline at
1-800-322-2588, said Washington health authorities.
"We
are telling folks if you're sick or you think you have mumps, stay
home," Johnson said, adding that this advice is especially true for kids
and folks in contact with schools, universities and colleges.
The CDC has received reports of 228 cases of mumps between January 1 and 27.
"Almost
half of them are being reported from Arkansas," Patel said. "Arkansas
is also having a large outbreak that is continuing into 2017."
Mumps
typically begins with fever, headache, muscle aches, tiredness and loss
of appetite lasting a few days. Most people will then see salivary
glands swell, causing puffy cheeks and a swollen jaw. Although the
incubation period ranges from 12 days to 25, symptoms last at least two
days but usually more than 10 days.
Mumps
can occasionally cause complications, especially in adults. These
include deafness and inflammation of the brain, ovaries, breast tissue
or testicles. Occasionally, mumps can cause encephalitis, which in rare
cases can lead to death, says
the CDC.
Because
it is caused by a virus, mumps will not respond to antibiotics. Doctors
generally recommend bed rest and over-the-counter pain relievers.
"Our
goal is simple: stopping the outbreak by helping local health care
providers," Johnson said. "Make sure you and your family members receive
health care."
The outbreak began
with no real "trigger point," he said. "When you have an outbreak like
this, it happens sometimes in one county and it kind of spreads." He
noted that people in close contact, such as those attending schools,
universities and churches, could become affected if one person among
them becomes sick.
Each year, the
number of mumps cases fluctuates within a range of a couple hundred to a
couple thousand cases, Patel explained. During 2016,
5,311 cases in 46 states and the District of Columbia were reported to the CDC.
The
2016 total will not be finalized for many months due to delayed state
reports and the need to "clean" the data, Patel said. "At least it does
give you a glimpse that 2016 was one of our high years."
Outbreaks
in just a few states pushed the numbers above the average. "We know
Arkansas was one of our largest outbreaks, and then Iowa, Oklahoma, New
York and Illinois -- they all have reported more than 300 cases in
2016," she said.
The
CDC recommends that children get their first dose of MMR vaccine at 12
to 15 months of age and the second dose at 4 to 6 years old. In people
who receive just one shot, the vaccine is less effective. The
alternative MMVR vaccine, which protects against measles, mumps, rubella
and varicella (chickenpox), is licensed for use in children between the
ages of 12 months and 12 years.
The
MMR vaccine effectiveness is 88% with two doses. This means that if 100
vaccinated people are exposed to the mumps, 12 will still become sick.
In
December, the CDC said that most of the individual state outbreaks had
been occurring among vaccinated people. Outbreaks in recent years, most
notably one involving NHL players in 2014, have spurred debate over the
need for a third dose of vaccine.
The
Advisory Committee on Immunization Practices -- a panel of medical and
public health experts who meet three times a year to offer vaccination
guidance for the United States -- has begun the work to consider the
recommendation of a third dose of vaccine.
A
work group will consider multiple components and data from ongoing
effectiveness studies and then present its recommendations to the
committee for a vote, Patel said.
"Safety,
effectiveness, implementation -- a number of things are considered when
a recommendation is put forth," she said, adding that this process will
probably take 12 to 18 months.
In
studies of the safety of a third vaccine dose, Patel said, there have
been no side effects reported beyond those typically seen with the shot.
Common side effects
include soreness in the arm (from the needle), fever, mild rash and
temporary pain. Rarely, febrile seizures have been reported, though
these are not associated with long-term effects.
Before
the US mumps vaccination program started in 1967, the CDC received
reports of 186,000 cases each year. Since most doctors considered the
mumps a typical childhood disease, the actual number of cases was
probably much higher. Cases decreased by more than 99% in the US in the
years after the vaccination program began.
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