Urinary Tract Infection (UTI) Vaccine and Treatment

Urinary Tract Infection (UTI) Vaccine and Treatments 2026

Urinary tract infections (UTIs) are among the most common bacterial infections, affecting hundreds of millions of people worldwide each year. Most UTIs are caused by uropathogenic E. coli (E. coli). Less common pathogens, such as Enterococcus faecalis and other enterococci, cause infections by infecting an abnormal or catheterized urinary tract. As of January 2026, patients with  Uncomplicated and Recurrent UTI in the United States require prophylactic antibiotic regimens, as UTI vaccines are unavailable in the U.S. European guidelines recommend an immunoreactive (vaccine) strategy for preventing UTIs.

Urinary Tract Infection (UTI) Vaccines

Immunotek S.L. Uromune™ (MV140), an oral spray for recurrent urinary tract infections, has been approved for adults in countries such as Mexico and the United Kingdom. As of December 2025, international travelers seeking a Uromune vaccine appointment can submit a request to PassportHealth in London, England.

Uro-Vaxom® (OM-89) is an immunostimulant vaccine consisting of an oral tablet with 18 heat-killed strains of E coli bacteria. Uro-Vaxom activates the immunocompetent cells of the intestinal lining Peyer's plaques). In humans, Uro-Vaxom stimulates white blood cells and promotes the production of antibodies, thereby helping to prevent urinary tract infections (UTIs). A review found that the risk ratio for developing at least one UTI in the female population was significantly lower in the OM-89 group (risk ratio, 0.61; 95% confidence interval, 0.48–0.78), and the mean number of UTIs was approximately half that of the placebo group. It has been used in Europe with minimal documented adverse events and is recommended by the European Association of Urology.

StroVac® (Solco-Urovac, Strovac) is a vaccine against UTIs that contains 10 bacterial strains known to cause them. It acts not only through the adaptive immune system but also by stimulating the innate immune system. It is available in Germany, not in the USA.

Urinary Tract Infection (UTI) Vaccine Candidates

A Research Article published in March 2021 - Local induction of bladder Th1 responses to combat urinary tract infections - concluded that intravesical vaccination with one or more UPEC antigens to induce bladder Th1 responses represents a superior strategy to combat UTIs, especially in UTI-prone subjects.

Baxiva's proprietary conjugation platform streamlines the development of multivalent vaccines targeting the serotype-specific polysaccharides of Gram-negative bacteria, including capsule and O antigens. The multivalent vaccine targets the most common serotypes associated with invasive ExPEC infections.

Urinary Tract Infection (UTI) Treatment

There are approximately 40 million uUTI prescriptions written annually in the U.S., and approximately 1% of those UTI infections are caused by pathogens resistant to common oral antibiotics. The four leading oral antibiotic treatments for uUTI (slide #6) account for approximately 75% of the prescription market, but have resistance rates of 20% or higher.

GSK plc announced on March 25, 2025, that the U.S. FDA approved Blujepa (gepotidacin), a topoisomerase inhibitor antibiotic for the treatment of uUTIs. Blujepa is the first in a new class of oral antibiotics for uUTIs in nearly 30 years.

Iterum Therapeutics announced in August 2025 that Orlynvah™ (sulopenem etzadroxil and probenecid), a broad-spectrum oral penem antibiotic that's indicated for treating uUTIs caused by certain bacteria (Escherichia coli, Klebsiella pneumoniae, or Proteus mirabilis) in adult women, is the first U.S. FDA-approved oral penem antibiotic commercially available in the United States.

Spero Therapeutics, Inc. and GSK plc announced on May 28, 2025, that the pivotal, multi-country, Phase 3 PIVOT-PO trial evaluating tebipenem HBr ((TBP-PI-HBr) an investigational oral treatment for complicated urinary tract infections (cUTIs), including pyelonephritis, met its primary endpoint and will stop early for efficacy (NCT06059846). The decision follows a recommendation from the Independent Data Monitoring Committee, which completed a pre-specified interim analysis of data from 1,690 patients enrolled in the trial.

Pivya™ (Pivmecillinam) is an extended-spectrum penicillin antibiotic and a U.S. FDA-approved oral prodrug of mecillinam. Pivya has a unique mechanism of action that targets the penicillin-binding protein 2 (PBP-2) in the cell walls of Gram-negative bacteria. The Pivya tablet has been used throughout Europe for years and is expected to be available in the U.S. in 2025.

ORLYNVAH™ (sulopenem etzadroxil and probenecid) is a U.S. FDA-approved novel oral penem antibiotic for the treatment of uUTIs caused by the designated microorganisms Escherichia coli, Klebsiella pneumoniae, or Proteus mirabilis in adult women. Orlynvah is taken as one oral tablet twice daily for 5 days. 

RECCE® 327 (R327) is an investigational synthetic anti-infective developed for treating severe, potentially life-threatening infections caused by Gram-positive and Gram-negative bacteria, including the full suite of ESKAPE pathogens, even in their superbug forms. 

In various clinical trials, Locus Biosciences is developing LBP-EC01, a CRISPR-enhanced bacteriophage therapy for the treatment of UTIs and other infections caused by E. coli. It is a bacteriophage cocktail engineered with a CRISPR-Cas3 construct targeting the E. coli gene. It is not a broad-spectrum antibacterial that kills various bacterial species. The precision medicine product works through a unique dual mechanism of action, utilizing both the natural lytic activity of the bacteriophage and the DNA-targeting activity of CRISPR-Cas3.

UTI Tests

A Viewpoint published by The JAMA Network on May 5, 2025, stated urinary nitrites provide diagnostic redundancy in confirming the presence of bacteriuria at best and promote the unnecessary use of antibiotics in asymptomatic patients at worst. Future research should examine the effects of suppressing the nitrite result from the urinary dipstick to determine the downstream impact on antimicrobial prescribing. Additionally, future research should focus on refining diagnostic techniques to distinguish between true UTIs and symptomatic bacteriuria. We believe urinary nitrites should no longer be used to diagnose UTI in pediatric or adult patients.