DETROIT (AP) — Two people have died in the cyclospora outbreak in Michigan, state health officials announced Monday, the first deaths confirmed in the U.S. related to the microscopic parasite.

The Michigan Department of Health and Human Services said both people had underlying health conditions that may have been impacted by the intestinal illness and dehydration. The department said it would not provide additional information about the deaths.

Cyclospora is a microscopic, spherical parasite that commonly causes watery diarrhea “with frequent and sometimes explosive bowel movements,” according to the Centers for Disease Control and Prevention. Outbreaks tend to occur most often in the late spring and summer.

The CDC says the illness, called cyclosporiasis, is rarely deadly.

The heat-loving parasite infects the bowels and spreads through feces. In the past, people have been infected by consuming fruits or vegetables that were exposed to feces-contaminated irrigation water.

Dr. Joel Kammeyer, the division chief of infectious diseases at Wayne State University and the Detroit Medical Center, called the deaths a “tragedy” but noted that despite thousands of cyclosporiasis cases, only two people have died.

“For someone who comes into an urgent care and cyclosporiasis is their only issue, it’s relatively easy to treat,” Kammeyer said. But for people who are struggling with other illnesses, he said, “it stands to reason that there are some patients that might not be able to withstand the dehydration that can come with severe cyclosporiasis.”

Cyclosporiasis is less common than other foodborne illnesses, including salmonella and E. coli. Many cases are never linked to a specific food or other source and, for years, few U.S. cyclospora outbreaks were reported. But the number started rising about a decade ago, with a particularly notable spike in 2018 and 2019.

Previously, 2019 saw the most reported U.S. cyclosporiasis cases, with about 4,700.

The CDC said it is aware of more than 18,000 confirmed or suspected cases in the current surge. But CDC numbers can lag state reports, which suggest the number is more than 20,000 nationwide.

Federal health officials have identified lettuce from Mexico served at Taco Bell locations in nine states as a source of the widespread outbreak. As of late July, the number of cases linked to the lettuce was 1,947, including at least 98 people who had to be hospitalized, according to the CDC.

The agency has said other “brands, restaurants, retailers, or distribution channels” could be tied to the outbreak as the investigation continues.

SPOKANE (AP) — Wildfires in eastern Washington state forced the evacuation of 60,000 people in the Spokane area while destroying at least 600 homes, businesses and other structures, authorities said Sunday.

The fires in and around Spokane, the state’s second largest city, burned about 8.2 square miles (about 21 square kilometers) over the weekend and were among dozens of wildfires across the Western U.S. that stretched the ability of federal, state and local agencies to fight them.

A total of about 390 square miles (1,000 square kilometers) has burned across the state, and some of the fires, including those in the Spokane area, have not been contained.

No one hurt or unaccounted for — so far

Fire and law enforcement officials said there had been no reports of injuries or people unaccounted for — but they stressed it was early in the response effort.

Officials also said that the evacuees in Spokane included patients at its U.S. Veterans Affairs hospital.

Video from the Spokane area showed buildings on fire, black smoke billowing up near neighborhoods, and the smoking ruins of homes, with only chimneys still standing. Several officials expressed concern that the area does not appear likely to get a break in coming days from the weather, which is expected to remain dry.

“We are not out of danger,” U.S. Sen. Maria Cantwell said during a news conference with federal, state and local officials in Spokane. “The next couple of days will be challenging.”

Investigators had yet to determine how the blazes started.

Grassland in flames in parts of Idaho, Oregon and Utah

Spokane was hardly the only place struggling to contain fires.

Crews using bulldozers and helicopters continued for a 10th day to fight a fire that has burned nearly 525 square miles (about 1,360 square kilometers) of grassland in western Idaho and eastern Oregon. The area is home to cattle ranches, and authorities said the fire is threatening more than 600 homes and 800 other structures.

The weather in the area was expected to remain sunny — and dry — well into the week, with temperatures rising to more than 90 degrees Fahrenheit (32 degrees Celsius) on Wednesday. Officials say the fire was caused by lightning.

In central Utah, a massive blaze more than doubled in size over the weekend, jumping from 16 square miles (about 41 square kilometers) to about 56 square miles (145 square kilometers) by Sunday morning. More than 100 cattle have been killed, according to local law enforcement.

Officials called the fire “catastrophic” as heavy winds helped flames jump containment lines overnight. The fire is moving north toward Fillmore, a town of about 2,600 people and the seat of Millard County. Mandatory evacuations were ordered Sunday evening for the southern portion of Fillmore.

The National Weather Service issued warnings about the air quality across the northwest. It issued red flag fire warnings for parts of Utah and Montana and western Nebraska, and extreme heat warnings for the southern parts of Arizona, California and Nevada and northern Montana.

High winds make it hard to fight fires in Spokane area

While temperatures Sunday in Spokane were forecast to remain below 80 F (27 C), wind gusts from 35 mph (56 kph) to 45 mph (72 kph) had been expected by the afternoon, said Benjamin Cossel, public information officer for the federal response team from California called in Saturday night to deal with the fires.

“We have weather working against us, and we have terrain working against us,” Cossel said.

There were three fires in the Spokane area: the Old Trails Fire, the Fairview Fire and the Meadowview Fire. Washington Gov. Bob Ferguson declared a state of emergency Saturday, and the National Weather Service issued a “particularly dangerous situation” red flag alert for eastern Washington.

Cossel said that as it gets warmer during the day, cool air that’s closer to the ground and keeping winds at bay will rise, allowing those winds to move through the area. The Spokane River cuts through the city of about 229,000 people, and there are steep canyons on both sides that channel the wind.

“They push the fire through the canyons, up, up the slopes, and then outside the slopes and around,” he said. “It’s very, very hilly, very, very steep slopes, a lot of canyons that create really turbulent, really challenging sort of wind scenarios.”

Spokane sets up shelter for impacted residents

Authorities in Spokane set up a shelter at the city’s main convention center. About 400 people were staying there, officials said Sunday.

Spokane County Commissioner Chris Jordan said relatives of his were in an area affected by the fires and that they don’t know if their home is still standing. He said he spoke with them as they were leaving the home.

“They’re in their car and all they can see is smoke everywhere, and it was incredibly scary for so many people,” he said during the news conference.

Heather Rosenstrater, president and CEO of Avista Corp., the area’s electric and natural gas utility, said about 10,000 people were without power Sunday, down from a peak of 30,000. Avista needs to repair two transmission lines, she said, so it’s possible that demand for electricity over the next few days could cause outages.

Meanwhile, several larger fires continued to burn in less populated areas northwest of Spokane, including one about 80 miles (129 kilometers) from the city that has burned about 210 square miles (544 square kilometers). Another fire in eastern Oregon, about 70 miles (113 kilometers) to the northwest in the Stinkingwater Mountains, has burned about 336 square miles (870 square kilometers).

“The whole northwest is heavily impacted right now,” said Keila Vizcarra, the spokesperson for the federal team from California handling what’s been named the Big Grass Fire in western Idaho and eastern Oregon.