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A strain of Salmonella Newport on some cattle in the United States and on some soft Mexican cheese has been found to be resistant to antibiotic treatment, according to a release from The Centers for Disease Control and Prevention was published Friday.

The CDC reports the results of a study conducted at Salmonella Newport failing to address two oral agents that are often recommended to treat Salmonella infections. human cases of Salmonella, although most Salmonella patients do not really need antibiotics.

For those who do, doctors are concerned that the usual recommended treatment will not be effective in the future if there are more antibiotics that are resistant to motion. Ian Plumb, an epidemiologist with the CDC's Enterprise Disease Epidemiology Branch, and a study author, told USA TODAY.

"Salmonella Newport is one of the most common types of Salmonella, which is a leading cause of birth defects in the United States," Plumb said.

In particular, antibiotic-resistant strains were not detected until 2016. Plumb says. It has since been noted on numerous occasions in cecal and beef samples including a mixture of queso fresco and Oaxaca cheese in the United States and Mexico.

Last year, there were 255 cases in the United States spread across 32 states, between March 2018 and June 2019.

The CDC, Plumb said, is monitoring any new cases of infection.

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"For patients with this strain of Salmonella Newport and who need antibiotic treatment, alternative medicines may be considered," Plumb said.

Plumb stated that the CDC was concerned that the strain would appear to be emerging. This means that there may be more antibiotic-resistant infections in the future.

The CDC is not alone in their concerns.

Greg Frank, director of Working to Fight AMR, a team that fights drug-resistant infections, told USA TODAY the report emphasizing the importance of antibiotic-resistant infections as a problem.

"Drug-resistant superbugs are changing now faster than we've invented new antibiotics and other treatments to fight back against them," Frank said. That's also worrying, Plumb said, because the findings suggest that strain can spread to cattle.

"We know that any use of antibiotics, in humans, animals, and the environment, can lead to the development and spread of resistant bacteria," Plumb said.

In recent years, he said, there has been increased awareness about antibiotic-resistant bacteria, which may limit treatment options, says Plumb. So, when this happens, it can be a reminder to consider antibiotics a "valuable resource" that should only be used on humans and animals as needed.

To prevent Salmonella infection when eating meat or cheese, Plumb has a few tips:

  • Cook beef at a safe temperature. Beef should cook at least 160 ° F and steaks and roast should cook at least 145 ° F.
  • Avoid eating soft cheese made with raw (no subtle). A label can help you tell when a cheese is "made with pasteurized milk."

Follow Morgan Hines on Twitter: @MorganEmHines .

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