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Oral Antiviral Blocks Measles-Like Virus Transmission in Ferrets

Oral Antiviral Blocks Measles-Like Virus Transmission in Ferrets

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Oral Antiviral Blocks Measles-Like Virus Transmission in Ferrets

This year, the United States has recorded the highest number of measles cases since 2000, the year that the disease was declared eliminated from the country. As of mid-July, 2,260 measles cases were reported—just 29 cases less than the entire year of 2025. And outbreaks are widespread, with 34 new outbreaks reported in 2026.

The reason for this surge in cases is waning vaccination rates across the country. Given that, the production of new antivirals is an urgent matter.

measles
Map of measles cases in the U.S. [CDC]

Now, the new oral antiviral drug candidate GHP-88310 has shown promising results in a ferret model of infection. When administered before or after direct contact or airborne exposure to canine distemper virus (which causes measles-like disease in ferrets) GHP-88310 blocked transmission of the virus and reduced clinical symptoms in ferrets.

“We were very excited to see that GHP-88310 given by mouth completely prevented airborne transmission in our ferret model of measles,” said Carolin Lieber, PhD, a postdoctoral fellow in the Plemper lab at Georgia State University. “This finding is unprecedented for a viral polymerase inhibitor and demonstrates the extraordinary antiviral potency of this drug.”

This research is published in Nature Microbiology in the paper, “Antiviral GHP-88310 blocks contact-mediated and airborne transmission in a ferret model of measles-like disease.”

“Silencing measles outbreaks quickly is essential to reestablish control over the virus,” said Richard Plemper, PhD, professor and director of the Center for Translational Antiviral Research (CTAR) at Georgia State University. “This study follows our recent development of the drug candidate GHP-88310. It demonstrates that the drug is suitable to augment traditional ring vaccination against measles.”

GHP-88310 (described earlier this year in Science Advances) is known to be an orally efficacious broad-spectrum orthoparamyxovirus polymerase inhibitor. But its effect on viral transmission has remained unclear. This study explored whether prophylactic administration of GHP-88310 prevents virus transmission through close contact or through the air. The results demonstrate that GHP-88310 efficiently blocks both forms of viral spread. In addition, the study showed that treatment of infected animals shortened the time period in which infected animals could transmit the virus.

To explore relevant conditions of viral transmission, the researchers established both direct-contact and airborne canine distemper virus transmission models to examine pharmacological suppression of virus spread. The transmission systems allowed them to pair infected and uninfected animals in direct physical contact or shared airspace, each under controlled environmental parameters.

“We designed the study to recapitulate viral spread between people with direct contact, for instance in a household, and between more distant social contacts, for example in classrooms or other indoor settings that bring people into proximity without direct interaction,” said Plemper.

The results showed that pre- and post-exposure prophylactic GHP-88310, given twice daily to air contacts, prevented transmission. The authors note that once-daily prophylactic administration mediated complete survival with all air contacts undergoing seroconversion. In addition, they note that therapeutic treatment of air contacts mitigated clinical signs, and animals survived, whereas all vehicle-treated air contacts succumbed. In addition, therapeutic treatment of infected source animals shortened the contagious phase by five days.

“In addition to this prophylactic benefit, GHP-88310 used therapeutically shortened the duration of disease in our model,” noted Plemper. “If equally applicable to human hosts, it may shorten the severe social and economic burden of prolonged quarantine of patients and further aid outbreak management.” The investigators are now readying GHP-88310 for formal clinical testing.

The post Oral Antiviral Blocks Measles-Like Virus Transmission in Ferrets appeared first on GEN – Genetic Engineering and Biotechnology News.

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STAT+: California Supreme Court sides with Gilead in ‘duty’ to innovate case

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The California Supreme Court sided with Gilead Sciences in a closely watched case brought by thousands of patients who argued the company was negligent for slow-walking development of an HIV medicine that was safer than another drug it was already selling.

In a 6-1 decision, the court overturned a state appeals court ruling two years ago that Gilead could be held liable, raising alarm in the pharmaceutical industry that drug development decisions could be influenced by the fear of legal liability.

The case began after more than 24,000 people claimed in federal and state court lawsuits that they unnecessarily suffered kidney injury and bone loss from the older drug. They maintained that Gilead cynically managed its product pipeline at the expense of people who should have been treated with a safer medicine.

Continue to STAT+ to read the full story…

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Combined Phage Therapy and FMT Reduces Recurrent UTIs and Antibiotic Use in First Human Case Series

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Recurrent urinary tract infections (rUTIs) are among the most common bacterial infections worldwide. The difficult-to-treat condition, which affects primarily women, is defined as two urinary tract infections (UTIs) within six months or three UTIs within the past year. They are a leading cause of outpatient antibiotic use, accounting for more than 15% of all prescriptions.

While antibiotics remain the standard treatment, frequent recurrences and rising antibiotic resistance highlight the need for alternative therapeutic approaches. Now, researchers have, for the first time, administered a combined phage therapy (PT) with fecal microbiota transplantation (FMT), to decolonize urinary and intestinal reservoirs of rUTI patients.

The novel treatment approach, combining PT and elective FMT, was administered to three female patients, between May and July 2023, with rUTI that did not respond to antibiotics and commonly used non-antibiotic strategies. All had microbiologically confirmed E. coli in multiple infections.

All three women received PT orally and intravesically (locally applied to the bladder via catheter) for eight days outside of acute episodes. Two of these three patients were elected to receive subsequent FMT. Since the bacteria causing the recurring infections often reside in the gut as well as the urinary tract, the FMT treatment targeted the intestinal reservoirs of E. coli that survive antibiotic treatment of acute infections and can become increasingly resistant.

“While phage therapy acts to remove the pathogen, FMT aims to restore a healthy microbiome, combining both immediate and long-term effects,” Lena Biehl, MD, PhD, group leader at Fraunhofer ITMP, deputy lead of Cologne Microbiota Bank, University Hospital Cologne.

This work is published in Nature Microbiology in the paper, “Combined Phage therapy and fecal microbiota transplantation to treat recurrent urinary tract infection: a case series.”

The treatments were well tolerated and did not result in noticeable side effects. The two patients who received the combination therapy have experienced a long-term reduction of UTIs over the course of two years, while the one patient with PT only has experienced further episodes but with reduced symptoms. For all patients, although E. coli was detected in follow-up samples, quality of life improved significantly, while the need for antibiotic treatment was substantially reduced.

“Three patients are not a sufficiently large sample to establish this new therapy, and control groups were lacking. However, this experience has helped to lay the foundation for a clinical trial in order to test the clinical utility of this treatment approach and make it more widely available and sustainable for patients,” comments Shawna McCallin, MD, at the Balgrist University Hospital in Zurich.

The clinical trial is scheduled to begin in June 2027 at the participating institutions as part of the REPhRAME project, which is funded by the European Commission through the Horizon Europe funding programme.

The post Combined Phage Therapy and FMT Reduces Recurrent UTIs and Antibiotic Use in First Human Case Series appeared first on GEN – Genetic Engineering and Biotechnology News.

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STAT+: After Eli Lilly granted one man special access to obesity drug, doctors struggle to get answers

Last month, STAT reported that Eli Lilly granted a single 79-year-old patient special access to retatrutide, an unapproved obesity drug that has demonstrated bariatric-surgery levels of weight loss. 

Since then, at least a handful of clinicians have tried to seek the same access for their patients. Two of them haven’t received answers from the drugmaker for weeks; one heard back on Monday, only after STAT reached out to Lilly with questions for this story, that his patient might qualify for access to the drug.

The lack of clarity from Lilly raises new questions about why the company gave extraordinary access to an experimental obesity drug to a single patient. Clinicians are calling for more transparency from Lilly on whether the company plans to expand access, or whether this was a one-time, special circumstance. 

Continue to STAT+ to read the full story…

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Last month, STAT reported that Eli Lilly granted a single 79-year-old patient special access to retatrutide, an unapproved obesity drug that has demonstrated bariatric-surgery levels of weight loss. 

Since then, at least a handful of clinicians have tried to seek the same access for their patients. Two of them haven’t received answers from the drugmaker for weeks; one heard back on Monday, only after STAT reached out to Lilly with questions for this story, that his patient might qualify for access to the drug.

The lack of clarity from Lilly raises new questions about why the company gave extraordinary access to an experimental obesity drug to a single patient. Clinicians are calling for more transparency from Lilly on whether the company plans to expand access, or whether this was a one-time, special circumstance. 

Continue to STAT+ to read the full story…

Read More

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