To protect your family from measles, learn about the vaccination and risks of exposure.

By Wendy Hunter, M.D.
February 02, 2015
measles facts
Credit: Yeji Kim

Measles has spread to 28 states and infected more than 1,022 people since the start of 2019, according to the Centers for Disease Control and Prevention (CDC). The number of cases rose by 41 in the last week alone, and they're centered in several localized zones. The largest number of cases have occurred in New Jersey and New York; in fact, minors without the MMR vaccine were banned from public places in Rockland County, New York, for about two weeks this spring. Washington had also declared a state of emergency over the outbreak.

So far, 2019 has experienced the largest measles outbreak since 1992. And the CDC worries that summer camps and travel plans will further spread measles – which is why everyone should check their vaccination status before traveling. 

A highly contagious virus, measles was technically eliminated in America 20 years ago, but the recent uptick has two major causes: international travelers bringing measles into the U.S., and unvaccinated children coming into contact with it. For example, the virus has been hitting New York City's Orthodox Jewish communities, where travelers returning from countries like Israel have infected unvaccinated community members. Since news reports only tell part of the story, here's what concerned parents need to know about the measles outbreak.

Measles is hard to diagnose early.

Just like a cold, early symptoms of measles include fever, fatigue, and loss of appetite. This is soon followed by a cough and red, watery eyes. Only after about three days does the classic rash appear on the head and progress down the body.

Measles is highly contagious.

Infectious measles droplets survive up to two hours after the infected person has left an area. And since the contagious period is long—from four days before a rash appears until four days after—a single infected person can come in contact with hundreds of people.

Measles can cause serious complications.

Measles can lead to pneumonia or ear infections. Most kids recover easily, but in approximately every 1,000 cases, one person will suffer encephalitis (brain inflammation) that causes permanent brain damage. Two to three people per 1,000 cases will die.

The measles vaccine is safe.

A study the February 2015 issue of the journal Pediatrics showed that the measles vaccine is safe. This goes for both forms of the vaccine available in the U.S.: measles-mumps-rubella (MMR) and measles-mumps-rubella-varicella (MMRV). Researchers tracked more than 600,000 1-year-olds over 12 years to confirm the vaccine's safety.

The measles vaccine really works.

The measles vaccine requires one dose at age 12-15 months, and another dose at age 4-6 years, according to the CDC. But given the recent measles outbreak, the New York State Department of Health recommends a vaccination at six months in affected areas. Ninety-five percent of kids will develop immunity when they get their first vaccination. The second dose before kindergarten gives 99 percent immunity. By contrast, 90 percent of exposed, unvaccinated people will get sick with measles. Immunity can disappear over time and 5 in 100 will lose their immunity by their late teens or adulthood.

The vaccine works even if your child gets it after being exposed to measles.

If your child is exposed and unvaccinated, or hasn't gotten a booster shot, the vaccine protects when given within 72 hours of exposure.

Very young babies are already protected from measles.

Until 6 months, babies are still protected by the antibodies received in Mom's womb. But the antibodies will break down, and by 9 months, your baby becomes vulnerable to measles.

Babies should now be vaccinated before international travel.

Because of increased risk, the AAP and CDC now recommend vaccinating 6- to 12-month-olds if they’re traveling internationally. However, the regular two-shot series after 12 months is still necessary to ensure long-lasting immunity. If an adult isn’t vaccinated, the CDC says they should get two doses of the vaccine before traveling, as long as the doses are separated by a minimum of 28 days. Learn more about the measles vaccine for travelers here.

Comments (7)

April 13, 2019
It is ludicrous to state that the measles outbreak in NY is linked to people visiting Israel. Israel has one of the highest immunization rates in the world. Babies are routinely vaccinated, and children are vaccinated for free in school You should apologize to the Jewish Orthodox community. Routine vaccines provided for babies and children The vaccines currently provided for babies and children at Tipat Halav family care centers as part of the routine vaccination program are: Vaccine against Diphtheria-Tetanus-Whooping cough + Haemophilus influenzae type B + Polio [DTaP-Hib-IPV] (Hebrew) Vaccine against Measles-Mumps-Rubella (German measles) + Varicella (chicken pox) [MMRV] Vaccine against pneumococcus bacteria [PCV] Vaccine against Hepatitis B Vaccine against Hepatitis A Vaccine against Rotavirus The vaccines given at school are: In 1st grade: Vaccine against Measles-Mumps-Rubella (German measles) - Varicella (chicken pox) [MMRV]
April 13, 2019
FACT - Until the profitable measles vaccine came along, measles was like other diseases, not killing anyone for one reason alone, improved water and air and food and domicile sanitation in the United States. By the 50's and 60's measles was a '3 day off from school' celebration. I had measles; as did all of my cousins and siblings.. and we all got over it handily. My son had naturally occurring measles in 2003 when he was 4. He got over it easily. Then he had naturally occurring chicken pox, and JUST as we all did in our youth, got over that also in 4 days. That was 16 years ago.. he hasn't been sick one day since. No ear infections ever. No colds, flu, strep, nothing. In 16 years, because the Measles and Chicken pox did their job, and his immune system is stellar. All his vaccinated cousins get sick with everything that goes around. Then there are a few that have severe allergies or other auto immune diseases, which are the real epidemic in the USA. Thanks to the vaccine madness which denies a child a chance to develop his only true defense, an immune system.
April 13, 2019
These nonmedical people need to STOP spreading misinformation. Their false theories are the reason that a deadly disease is on the rise. Please vaccinate your children!! You are NOT the expert. Stop thinking that you are.
April 13, 2019
February 10, 2019
Educate before you vaccinate!!
February 1, 2019
Some of the facts here are a little skewed to promote fear. Those complication rates are based on the measles cases that required seeking medical care. It's estimated that 90% of measles cases weren't reported, making the risks a lot lower in well nourished children. Second, the vaccine, like most all vaccines, probably does not confer lifelong immunity. So why aren't we seeing endemic measles?
February 1, 2019
Please post the link of the 2015 study. Thank you.