Mexican ranchers struggle to adapt as a tiny parasite ravages their cattle exports to the US
Like his father and grandfather before him, Ibarra Vargas has raised cattle on the parched soil of Sonora, the state in northwestern Mexico that shares a long border with the United States, particularly Arizona. His family has faced punishing droughts before but has never before had to contend with the economic hit of a new scourge: the New World Screwworm, a flesh-eating parasite.
U.S. agriculture officials halted live cattle crossing the border in July – the third suspension of the past eight months — due to concerns about the flesh-eating maggot which has been found in southern Mexico and is creeping north.
The screwworm is a larva of the Cochliomyia hominivorax fly that can invade the tissues of any warm-blooded animal, including humans. The parasite enters animals' skin, causing severe damage and lesions that can be fatal. Infected animals are a serious threat to herds.
The U.S. Department of Agriculture calls it a "devastating pest" and said in June that it poses a threat to 'our livestock industry, our economy, and our food supply chain.' It has embarked on other steps to keep it out of the United States, which eradicated it decades ago.
As part of its strategy the U.S. is preparing to breed billions of sterile flies and release them in Mexico and southern Texas. The aim is for the sterile males to mate with females in the wild who then produce no offspring.
The U.S. ban on live cattle also applies to horses and bison imports. It hit a ranching sector already weakened by drought and specifically a cattle export business that generated $1.2 billion for Mexico last year. This year, Mexican ranchers have exported fewer than 200,000 head of cattle, which is less than half what they historically send in the same period.
For Ibarra Vargas, considered a comparatively small rancher by Sonora's beef-centric standards, the inability to send his calves across the border has made him rethink everything.
The repeated bans on Mexican cows by U.S. authorities has pushed his family to branch into beekeeping, raising sheep and selling cow's milk. What he earns is just a fraction of what he earned by exporting live cattle, but he is trying to hold on through the lean times.
'Tiempos de vacas flacas" — times of the lean cows — as he calls them.
'At least it lets us continue' ranching, the 57-year-old said with a white cowboy hat perched on his head.
Reinvent to survive
Even as ranchers in Sonora intensify their efforts to make sure the parasitic fly never makes it into their state, they've had to seek new markets.
In the past two months, they've sold more than 35,000 mature cows within Mexico at a significant loss.
'We couldn't wait any longer,' said Juan Carlos Ochoa, president of the Sonora Regional Cattle Union. Those sales, he said, came at a '35% lower price difference compared with the export value of a cow.'
That's hard to stomach when beef prices in the U.S. are rising.
The U.S. first suspended cattle imports last November. Since then, more than 2,258 cases of screwworm have been identified in Mexico. Treatment requires a mix of manually removing the maggots, healing the lesions on the cows and using anti-parasite medicine.
There are other foreign markets, for example Japan, but selling vacuum sealed steaks across the Pacific is a dramatically different business than driving calves to U.S. feedlots. The switch is not easy.
An uncertain future
With his calves mooing as they ran from one end of a small corral to the other waiting to be fed, Ibarra Vargas said he still hasn't figured out how he will survive an extended period of not being able to send them to the U.S.
The recent two-year drought reduced his cattle stocks and forced him to take on debt to save the small family ranch that has survived for three generations.
Juan Carlos Anaya, director of Agricultural Markets Consulting Group, attributed a 2% drop in Mexico's cattle inventory last year to the drought.
Anaya said Mexican ranchers who export are trying to get the U.S. to separate what happens in southern Mexico from the cattle exporting states in the north where stricter health and sanitation measures are taken, 'but the damage is already done.'
'We're running out of time,' said Ibarra Vargas, who already laments that his children are not interested in carrying on the family business. For a rancher who 'doesn't have a market or money to continue feeding his calves, it's a question of time before he says: 'you know what, this is as far as I go.''
__
Sánchez reported from Mexico City.
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Polio nearly beaten, but fake records, weak vaccine and missteps fuel its return
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'We have spent more than $1 billion (in external polio funding) in the last five years in Pakistan alone, and it didn't buy us any progress,' said Roland Sutter, who formerly led polio research at WHO. 'If this was a private company, we would demand results.' Villagers, too, have protested the cost, staging hundreds of boycotts of immunization campaigns since 2023. Instead of polio vaccines, they ask for medicine, food and electricity. In Karachi, locals told AP they didn't understand the government's fixation on polio and complained of other issues — dirty water, heroin addiction. Workers are accompanied by armed guards; Pakistani authorities say more than 200 workers and police assigned to protect them have been killed since the 1990s, mostly by militants. The campaign also is up against a wave of misinformation, including that the vaccine is made from pig urine or will make children reach puberty early. 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It doesn't help, she added, that in this region, public trust in vaccine campaigns was undermined when the CIA organized a fake hepatitis drive in 2011 in an attempt to get DNA and confirm the presence of Osama bin Laden or his family. Workers see that continued mistrust every day. In a mountainous region of southeastern Afghanistan where most people survive by growing wheat and raising cows and chickens, a mother of five said she'd prefer that her children be vaccinated against polio, but her husband and other male relatives have instructed their families to reject it. They believe the false rumors that it will compromise their children's fertility. 'If I allow it,' the woman said, declining to be named over fears of family retribution, 'I will be beaten and thrown out.' _____ Cheng reported from London.
San Francisco Chronicle
4 hours ago
- San Francisco Chronicle
Takeaways from AP's report on problems in the worldwide campaign to eradicate polio
KARACHI, Pakistan (AP) — For nearly four decades, the World Health Organization and partners have been trying to rid the world of polio, a paralytic disease that has existed since prehistoric times. While cases have dropped more than 99%, polio remains entrenched in parts of Afghanistanand Pakistan. In its quest to eliminate the virus, WHO and its partners in the Global Polio Eradication Initiative have been derailed by mismanagement and what insiders describe as blind allegiance to an outdated strategy and a problematic oral vaccine, according to workers, polio experts and internal materials obtained by the Associated Press. Officials tout the successes – 3 billion children vaccinated, an estimated 20 million people who would have been paralyzed spared – while acknowledging challenges in Pakistan and Afghanistan. WHO polio director Dr. Jamal Ahmed defended progress in those two countries, citing workers' tailored response in resistant pockets. Here are some takeaways from AP's report on what's happened in one of the most expensive efforts in all of public health. Documents show major problems on polio vaccination teams Internal WHO reports reviewing polio immunization in Afghanistan and Pakistan over the past decade — given to AP by current and former staffers — show that as early as 2017, local workers were alerting problems to senior managers. The documents flagged multiple cases of falsified vaccination records, health workers being replaced by untrained relatives and workers improperly administering vaccines. On numerous occasions, WHO officials noted, 'vaccinators did not know about vaccine management,' citing failure to keep doses properly cold. They also found sloppy or falsified reporting, with workers noting 'more used vaccine vials than were actually supplied.' According to an August 2017 report from Kandahar, Afghanistan, vaccination teams worked 'in a hurried manner,' reports said, with 'no plan for monitoring." A team in Nawzad, Afghanistan, covered just half of the intended area in 2017, with 250 households missed entirely. Village elders said no one visited for at least two years. Polio workers say problems have gone unaddressed Health officials in Afghanistan and Pakistan told AP their efforts to vaccinate children are often stymied by cultural barriers, misinformation about the vaccines, and poverty. Sughra Ayaz has traveled door to door in southeastern Pakistan for the past decade, pleading for children to be immunized. Some families demand basics such as food and water instead of vaccines. Others, without citing proof for their beliefs, repeat false rumors and say they think the oral vaccine doses are meant to sterilize their kids. Ayaz said that given the immense pressure for the campaign to succeed, some managers have instructed workers to falsely mark children as immunized 'In many places, our work is not done with honesty,' she said. Some scientists blame the oral vaccine Polio eradication demands perfection — zero polio cases and immunizing more than 95% of children. But some scientists and former WHO staffers say the campaign's efforts are far from perfect, blaming in particular the oral vaccine. It's safe and effective, but in very rare instances, the live virus in the oral vaccine can paralyze a child. In even rarer cases, the virus can mutate into a form capable of starting outbreaks among unimmunized people where vaccination rates are low. Except for Afghanistan and Pakistan, most polio cases worldwide are linked to the vaccine; several hundred cases have been reported annually since 2021, with at least 98 this year. Most public health experts agree the oral vaccine should be pulled as soon as possible. But they acknowledge there isn't enough injectable vaccine — which uses no live virus and doesn't come with the risks of the oral vaccine — to eliminate polio alone. The injectable vaccine is more expensive and requires more training to administer. More than two dozen current and former senior polio officials told AP the agencies involved haven't been willing to even consider revising their strategy to account for campaign problems. Last year, former WHO scientist Dr. T. Jacob John twice emailed WHO Director-General Tedros Adhanom Ghebreyesus calling for a 'major course correction.' John wrote that 'WHO is persisting with polio control and creating polio with one hand and attempting to control it by the other.' Ahmed told AP the oral vaccine is a 'core pillar' of eradication strategy and that 'almost every country that is polio-free today used (it) to achieve that milestone.' Critics say there's no accountability Dr. Tom Frieden, who sits on an independent board reviewing polio eradication, said he and colleagues have urged WHO and partners to adapt to obstacles in Afghanistan and Pakistan. Since 2011, the board has issued regular reports about program failures, but had little impact. 'There's no management,' he said. With an annual budget of about $1 billion, polio eradication is among the most expensive initiatives in public health. WHO officials have privately admitted that sustaining funding will be difficult without signs of progress. Roland Sutter, who previously headed polio research at WHO, said donors had spent more than $1 billion in Pakistan trying to get rid of polio in the last five years — and made little progress. 'If this was a private company, we would demand results," he said. Ahmed pointed to the program's many successes. "Let's not overdramatize the challenges, because that leads to children getting paralyzed,' he said. Mistrust of the vaccine persists Vaccine workers and health officials say it's hard for campaign leadership to grasp the difficulties in the field. Door-to-door efforts are stymied by cultural barriers, unfounded stories about vaccines, and the region's poverty and transience. The campaign is up against a wave of misinformation, including that the vaccine is made from pig urine or will make children reach puberty early. Some blame an anti-vaccine sentiment growing in the U.S. and other countries that have largely funded eradication efforts. In a mountainous region of southeastern Afghanistan where most people survive by growing wheat and raising cows and chickens, many are wary of the Western-led initiative. A mother of five said she'd prefer that her children be vaccinated against polio, but her husband and other male relatives have instructed their families to reject it, fearing it will compromise their children's fertility. 'If I allow it,' the woman said, declining to be named over fears of family retribution, 'I will be beaten and thrown out.' Cheng reported from London.
