Hantavirus is on the rise in Argentina, where a stricken cruise ship began its journey

BUENOS AIRES, Argentina (AP) — Officials and experts in Argentina are scrambling to determine if their country is the source of a deadly hantavirus outbreak that has gripped an Atlantic cruise.

The health emergency aboard the ship that's moored across the ocean comes as Argentina sees a surge of hantavirus cases that many local public health researchers attribute to the recently accelerating effects of climate change. Argentina, where the cruise to Antarctica departed, is consistently ranked by the World Health Organization as having the highest incidence of the rare, rodent-borne disease in Latin America.

Higher temperatures expand the virus’ range because, in part, as it gets warmer and ecosystems change, rodents that carry the hantavirus can thrive in more places, experts say. People typically contract the virus from exposure to rodent droppings, urine or saliva.

“Argentina has become more tropical because of climate change, and that has brought disruptions, like dengue and yellow fever, but also new tropical plants that produce seeds for mice to proliferate,” said Hugo Pizzi, a prominent Argentine infectious disease specialist. “There is no doubt that as time goes by, the hantavirus is spreading more and more.”

The Argentine Health Ministry on Tuesday reported 101 hantavirus infections since June 2025, roughly double the caseload recorded over the same period the previous year.

A hantavirus found in South America, called the Andes virus, can cause a severe and often fatal lung disease called hantavirus pulmonary syndrome. The disease led to death in nearly a third of cases in the last year, Argentina’s Health Ministry said, up from an average mortality rate of 15 in the five years before that.

Authorities said passengers on the MV Hondius ship tested positive for the Andes virus. Argentina on Wednesday said it was sending genetic material from the Andes virus and testing equipment to help Spain, Senegal, South Africa, the Netherlands and the United Kingdom detect it.

Argentine officials say they’re trying to pin down where infected passengers traveled in the country before boarding the Dutch-flagged cruise liner in Ushuaia, a city in southern Argentina known as the end of the world. Once they know the itineraries, they plan to trace contacts, isolate close contacts and actively monitor to prevent further spread.

The U.N. health agency, or WHO, says that the first death on board, a 70-year-old Dutch man, happened on April 11. His 69-year-old wife, also Dutch, died on April 26. The third passenger, a German woman, died on May 2.

The virus can incubate for between one and eight weeks. That makes it hard to know whether the passengers contracted the virus before leaving Argentina for Antarctica on April 1; during a scheduled stop to a remote South Atlantic island; or aboard the ship.

The province of Tierra del Fuego, where the vessel docked for weeks before departing, has never seen a case of hantavirus. Before boarding, the Dutch couple went sightseeing in Ushuaia, and traveled elsewhere in Argentina and Chile, WHO said.

The Argentine government’s leading hypothesis is that the couple contracted the virus during a bird-watching outing in Ushuaia, according to two investigators who spoke on condition of anonymity because they were not authorized to brief the media, with the investigation ongoing. Authorities are also tracing the Dutch tourists' footsteps through the forested hillsides of Patagonia in southern Argentina where some infections are clustered.

Because early symptoms resemble the fever and chills of a flu, “tourists might think they just have a cold and not take it seriously. That makes it particularly dangerous,” Raul González Ittig, genetics professor at the National University of Córdoba and a researcher at state science body CONICET, said.

Argentina in recent years endured a historic drought. But it also had bouts of unexpectedly intense rainfall, part of a broader pattern of wild weather that scientists attribute to climate change.

Some of this variability has created conditions that have allowed hantavirus to flourish, experts say. Dry spells drive animals out of their usual habitats in search of food and water. Huge amounts of rain lead to vegetation growth, scattering seeds that attract leaf-munching rodents.

“When precipitation increases, food availability increases, rodent populations grow, and if there are infected rodents, the chance of transmission between rodents — and eventually to humans — also increases,” Ittig said.

Although hantavirus cases once were limited to the southern reaches of Patagonia, now 83% of cases are found in Argentina’s far north, according to the Health Ministry.

The ministry issued an alert in January about several fatal outbreaks, including in the most populous province of Buenos Aires.

With rural hospitals underequipped, residents had no clue what hit them.

Daisy Morinigo and David Delgado said they initially thought their 14-year-old son had the flu when he came down with a fever and body aches. Doctors who first saw Rodrigo in the town of San Andrés de Giles sent him home with ibuprofen and orders to rest.

But the feisty fourth grader's breathing worsened. On Jan. 1, they rushed Rodrigo to intensive care. He died just two hours after a hantavirus test came back positive.

"I wouldn’t wish this pain on anyone in the world,” Delgado said.

David Delgado cries as he speaks about his son Rodrigo Morinigo, who died in January of hantavirus, in San Andres de Giles, Argentina, Wednesday, May 6, 2026. (AP Photo/Victor R. Caivano)

Daisy Morinigo sits with her husband David Delgado as she speaks about their son Rodrigo Morinigo, who died in January of hantavirus, in San Andres de Giles, Argentina, Wednesday, May 6, 2026. (AP Photo/Victor R. Caivano)

The rural family home where Rodrigo Morinigo, who died from hantavirus in January at the age of 14, lived with his family when he contracted the illness in San Andres de Giles, Argentina, Wednesday, May 6, 2026. (AP Photo/Victor R. Caivano)

Health workers in protective gear arrive to evacuate patients from the MV Hondius cruise ship at a port in Praia, Cape Verde, Wednesday, May 6, 2026. (AP Photo/Misper Apawu)

Health workers in protective gear evacuate patients from the MV Hondius cruise ship into an ambulance at a port in Praia, Cape Verde, Wednesday, May 6, 2026. (AP Photo/Misper Apawu)

The MV Hondius cruise ship is anchored at a port in Praia, Cape Verde, Wednesday, May 6, 2026. (AP Photo/Misper Apawu)

NASHVILLE, Tenn. (AP) — Republicans in several Southern states pressed ahead with an aggressive election-year redistricting effort Wednesday, undeterred by demonstrations and objections to their plans to reshape majority-Black congressional districts that have suddenly become vulnerable because of a U.S. Supreme Court ruling.

In Tennessee, protesters interrupted legislative hearings on the redistricting plans, prompting lawmakers to temporarily suspend their work while state troopers cleared the room.

Despite passionate pleas from Black Democratic lawmakers, Republicans in the Alabama House approved a measure to upend the state’s congressional primaries if courts allow them to switch their U.S. House districts. In South Carolina, Democrats chided Republican colleagues for abiding by President Donald Trump's desires as they took initial steps toward redrawing a district long held by a Black Democratic lawmaker.

The stakes are high for minority voters who stand to lose their preferred representatives and for any Republican lawmakers reluctant to follow Trump's wishes. In Republican primary elections Tuesday, Trump-endorsed challengers defeated at least five of the seven Indiana state lawmakers targeted by the president's allies for refusing to support a congressional redistricting effort last year.

The Supreme Court ruled last week that Louisiana relied too heavily on race when creating a second Black-majority House district as it attempted to comply with the Voting Rights Act. The ruling significantly altered a decades-old understanding of the law, giving Republicans in Louisiana and elsewhere grounds to try to eliminate majority-Black districts that have elected Democrats.

The ruling intensified an already fierce national redistricting battle ahead of a November midterm election that will determine control of the closely divided House.

Since Trump prodded Texas to redraw its U.S. House districts last year, eight states have adopted new congressional districts. From that, Republicans think they could gain as many as 13 seats while Democrats think they could gain up to 10. But some of the new districts could be competitive in November, meaning the parties may not get all they sought.

Republicans on Wednesday proposed a new U.S. House map that would split Memphis’ home of Shelby County into three districts, instead of the current two. The map would break up Tennessee’s lone Democratic-held district, centered on the majority-Black city, creating a ripple effect of alterations to districts throughout the western and central parts of the state.

“Tennessee is a conservative state, and our congressional delegation should reflect that. This bill ensures it does,” Republican state Sen. John Stevens said.

Republican House Speaker Cameron Sexton said the proposed districts were drawn based on population and politics, not racial data.

To adopt new House districts, Tennessee lawmakers also are seeking to repeal a state law prohibiting mid-decade redistricting.

Democrats and civil rights activists denounced the efforts during Wednesday's committee hearings.

The proposal “is Black vote dilution at an industrial scale,” said Sekou Franklin, a political science professor at Middle Tennessee State University who is part of the Tennessee branch of the NAACP.

Protesters interrupted a Senate committee meeting, loudly chanting “Hands off our vote!” After senators suspended the hearing, state troopers cleared people from the room. Senators resumed their work elsewhere, advancing the legislation.

Later Wednesday, protesters in the hallway beat on the walls and doors of a committee room where senators were meeting. A House committee also paused its work as state troopers escorted chanting protesters from the room.

The candidate qualifying period in Tennessee ended in March, but legislation would reopen it to allow new candidates to join the races and existing candidates to switch districts. The primary election is Aug. 6.

Democrats noted that the state Supreme Court in April 2022 rejected a challenge to the current congressional map, finding it was too close to the election to make changes. This year, there’s even less time before the primary elections, raising the potential of confusion for both candidates and voters, Democrats said.

The Republican-led Alabama House on Wednesday passed legislation authorizing special congressional primaries as Republicans eye the possibility of getting a different congressional map in place for the November elections. The bill now moves to the state Senate.

Alabama is seeking to lift a federal court order that created a second congressional district with a near-majority of Black voters. That map led to the 2024 election of Rep. Shomari Figures, a Black Democrat. Republicans want instead to use a 2023 map drawn by state lawmakers that would give the GOP an opportunity to reclaim Figures’ south Alabama district.

The legislation won approval on a party-line vote after four hours of fiery debate during which Black legislators said the moment calls back to the state’s shameful Jim Crow-era history.

“It’s a tragic step backward for Black Alabama voters. But we’ve been here before, and we will not give up this fight,” said state Rep. Adline Clarke, a Democrat from Mobile.

State Rep. Juandalynn Givan, a Black Democrat from Birmingham, likened the legislation to poll taxes, counting jelly beans in a jar and other schemes that denied representation to Black citizens.

“It is a calculated political maneuver born out of fear, a fear that is of Black people and most importantly Black political power,” Givan said.

Alabama's legislation hinges on the U.S. Supreme Court or a district court agreeing to lift the injunction.

“We’re going to be ready if the court hands down a favorable ruling,” said Republican state Rep. Chris Pringle, who sponsored the bill.

Alabama’s primaries are May 19. If a court grants the state’s request, the legislation would ignore the results for congressional seats and direct the governor to schedule a new primary under the revised districts.

Democratic U.S. Rep. Jim Clyburn has represented South Carolina’s 6th Congressional District since it was redrawn in 1992 to favor minority voters. He’s running for an 18th term. But winning reelection could be harder for him if Republicans redraw his district.

A committee on Wednesday easily passed a proposal that could allow South Carolina lawmakers to consider drawing new congressional districts, setting up a showdown on the House floor later in the day.

The resolution would require a two-thirds vote to pass. Republicans have a supermajority, but some are concerned that an attempt to redraw the map to eliminate the state's lone Democratic representative could backfire and create up to two districts where Democrats are competitive.

Democratic state Rep. Spencer Wetmore said the redistricting effort reveals cynical politics focused more on winning for a narrow group than on helping all people.

“Daddy Trump calls and needs to grasp at some power, and once again we jump,” she said.

The state’s primaries are June 9, and early voting starts in three weeks.

Chandler reported from Montgomery, Alabama; Collins from Columbia, South Carolina; and Lieb from Jefferson City, Missouri. Associated Press reporter Kristen M. Hall contributed.

Jamiah Irby is removed by a state trooper from a Senate committee meeting during a special session of the state legislature to redraw U.S. Congressional voting maps Wednesday, May 6, 2026, in Nashville, Tenn. (AP Photo/George Walker IV)

People protest in a Senate committee meeting during a special session of the state legislature to redraw U.S. Congressional voting maps Wednesday, May 6, 2026, in Nashville, Tenn. (AP Photo/George Walker IV)

A person holds a sign during news conference before a special session of the state legislature to redraw U.S. Congressional voting maps Tuesday, May 5, 2026, in Nashville, Tenn. (AP Photo/George Walker IV)

U.S. Rep. Terri Sewell, D-Ala., speaks outside the Alabama state house during a special session of the Alabama Legislature, Tuesday, May 5, 2026, in Montgomery, Ala. (AP Photo/Mike Stewart)

Protesters march to the Capitol before a special session of the state legislature to redraw U.S. Congressional voting maps in Nashville, Tenn., Tuesday, May 5, 2026. (AP Photo/George Walker IV)

Protesters yell outside the Senate chamber during a special session of the state legislature to redraw U.S. Congressional voting maps, in Nashville, Tenn., Tuesday, May 5, 2026. (AP Photo/George Walker IV)

Rep. Justin J. Pearson, D-Memphis, center, marches with protesters before a special session of the state legislature to redraw U.S. Congressional voting maps, in Nashville, Tenn., Tuesday, May 5, 2026. (AP Photo/George Walker IV)