Incentivizing new antimicrobial agents
A lack of new antimicrobials in development is not a new story.
“There’s been a chill that’s been sustained on the antibiotic development field. Most large pharmaceutical companies have left the area of anti-infectants and the bulk of research and development is now in small pharmaceutical companies,” Dr. Fowler said. “And they’re struggling.”
One potential solution is the Pasteur Act, a bipartisan bill reintroduced in Congress and supported by IDSA. The bill encourages pharmaceutical companies to develop new antimicrobial agents with funding not linked to sales or use of the drugs.
Furthermore, the bill emphasizes appropriate use of these agents through effective stewardship programs.
Although some institutions shifted resources away from AMR out of necessity when COVID-19 struck, “I can say certainly from our experience at Duke that at least stewardship was alive and well. It was not relegated to the side,” Dr. Fowler said.
“In fact,” he added, “if anything, COVID really emphasized the importance of stewardship” by helping clinicians with guidance on the use of remdesivir and other antivirals during the pandemic.
Also, in some instances, treatments used to keep people with COVID-19 alive can paradoxically place them at higher risk for other infections, Dr. Fowler said, citing corticosteroids as an example.
Everyone’s concern
AMR isn’t just an issue in hospital settings, either. Ms. Kinamon reiterated that she picked up the infection in an athletic environment.
“Antimicrobial resistance is not just a problem for ICU patients in the hospital. I was the healthiest I had ever been and just very nearly escaped death due to one of these infections,” she said. ”As rates of resistance rise as these pathogens become more virulent, AMR is becoming more and more of a community threat,” she added.
Furthermore, consumers are partially to blame as well, Dr. Fowler noted.
“It’s interesting when you look at the surveys of the numbers of patients that have used someone else’s antibiotics” or leftover antimicrobial agents from a prior infection.
“It’s really startling ... that’s the sort of antibiotic overuse that directly contributes to antibacterial resistance,” he said.
Reasons for optimism
Promising advances in diagnostics, treatment, and prevention of AMRs are underway, Dr. Fowler said.
“It always gets me really excited to talk about it. It’s amazing what technology and scientific discovery can bring to this discussion and to this threat,” he said.
For example, there is a “silent revolution” in diagnostics with the aim to rapidly provide life-saving actionable data on a real patient in nearly real time.
Traditionally, “you start off by treating what should be there” while awaiting results of tests to narrow down therapy, Dr. Fowler said. However, a whole host of new platforms are in development to reduce the time to susceptibility results. This kind of technology has “the potential to transform our ability to take care of patients, giving them the right drug at the right time and no more,” he said.
Another promising avenue of research involves bacteriophages. Dr. Fowler is principal investigator on a clinical trial underway to evaluate bacteriophages as adjunct therapy for MRSA bacteremia.
When it comes to prevention on AMR infections in the future, “I continue to be optimistic about the possibility of vaccines to prevent many of these infections,” Dr. Fowler said, adding that companies are working on vaccines against these kinds of infections caused by MRSA or Escherichia coli, for example.
Patient outcomes
The man in his 40s with the multidrug resistant Pseudomonas infections “is now to the point where he’s walking in the halls and I think he’ll get out of the hospital eventually,” Dr. Fowler said.
“But his life is forever changed,” he added.
Ms. Kinamon’s recovery from MRSA included time in the ICU, 1 month in a regular hospital setting, and 5 months at home.
“It sparked my interest in antibiotic research and development because I see myself as a direct beneficiary of the stockpile of antibiotics that were available to treat my infection,” Ms. Kinamon said. “Now as a medical student working with patients who have similar infections, I feel a deep empathy and connectedness to them because they ask the same questions that I did.”
A version of this article first appeared on WebMD.com.