Arizona officials confirm measles outbreak in Navajo County

Health officials in Arizona say there are four linked measles cases in Navajo County, marking the state’s first outbreak this year.

The U.S. logged 122 more cases of measles last week — but only four of them in Texas — while the outbreaks in Pennsylvania and Michigan officially ended.

There were 1,168 confirmed measles cases in the U.S., the Centers for Disease Control and Prevention said Friday. Health officials in Texas, where the nation’s biggest outbreak raged during the late winter and spring, said they’ll now post case counts only once a week — yet another sign the outbreak is slowing.

There are three other major outbreaks in North America. The longest, in Ontario, Canada, has resulted in 2,009 cases from mid-October through June 3. The province logged its first death Thursday in a baby that got congenital measles but also had other preexisting conditions.

RELATED: As measles spreads, vaccination rates continue to decline

Another outbreak in Alberta, Canada, has sickened 761 as of Thursday. And the Mexican state of Chihuahua had 1,940 measles cases and four deaths as of Friday, according to data from the state health ministry.

Other U.S. states with active outbreaks — which the CDC defines as three or more related cases — include Colorado, Illinois, Kansas, Montana, New Mexico, North Dakota, Ohio and Oklahoma.

In the U.S., two elementary school-aged children in the epicenter in West Texas and an adult in New Mexico have died of measles this year. All were unvaccinated.

Measles is caused by a highly contagious virus that’s airborne and spreads easily when an infected person breathes, sneezes or coughs. It is preventable through vaccines, and has been considered eliminated from the U.S. since 2000.

How many cases are there in Arizona?

Arizona has four cases in Navajo County. The cases are linked to a single source, the county health department said Monday. All four are unvaccinated and have a history of recent international travel.

Where else is measles showing up in the US?

Measles cases also have been reported in Alaska, Arkansas, California, Florida, Georgia, Hawaii, Indiana, Iowa, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Nebraska, New Jersey, New York, Pennsylvania, Rhode Island, South Dakota, Vermont, Virginia and Washington.

Earlier outbreaks in Indiana, Michigan and Pennsylvania were declared over by health officials after six weeks of no new cases.

Cases and outbreaks in the U.S. are frequently traced to someone who caught the disease abroad. The CDC said in May that more than twice as many measles have come from outside of the U.S. compared to May of last year, and most of those are in unvaccinated Americans returning home. In 2019, the U.S. saw 1,274 cases and almost lost its status of having eliminated measles.

What do you need to know about the MMR vaccine?

The best way to avoid measles is to get the measles, mumps and rubella vaccine. The first shot is recommended for children between 12 and 15 months old and the second between 4 and 6 years old.

Getting another MMR shot as an adult is harmless if there are concerns about waning immunity, the CDC says. People who have documentation of receiving a live measles vaccine in the 1960s don’t need to be revaccinated, but people who were immunized before 1968 with an ineffective vaccine made from “killed” virus should be revaccinated with at least one dose, the agency said.

People who have documentation that they had measles are immune, and those born before 1957 generally don’t need the shots because so many children got measles back then that they have “presumptive immunity.”

Measles has a harder time spreading through communities with high vaccination rates — above 95% — due to “herd immunity.” But childhood vaccination rates have declined nationwide since the pandemic and more parents are claiming religious or personal conscience waivers to exempt their kids from required shots.

What are the symptoms of measles?

Measles first infects the respiratory tract, then spreads throughout the body, causing a high fever, runny nose, cough, red, watery eyes and a rash.

The rash generally appears three to five days after the first symptoms, beginning as flat red spots on the face and then spreading downward to the neck, trunk, arms, legs and feet. When the rash appears, the fever may spike over 104 degrees Fahrenheit, according to the CDC.

Most kids will recover from measles, but infection can lead to dangerous complications such as pneumonia, blindness, brain swelling and death.

How can you treat measles?

There’s no specific treatment for measles, so doctors generally try to alleviate symptoms, prevent complications and keep patients comfortable.

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