In a separate study, HHS finds a 40% increase in sepsis cases, as more patients succumb to infections without effective antibiotics and antimicrobial drugs
Given the drastic steps being taken to slow the spread of the Coronavirus in America, it’s easy to forget that significant numbers of patients die each year due to antibiotic-resistant bacteria (ARB), other forms of antimicrobial resistance (AMR), and in thousands of cases the sepsis that follows the infections.
The CDC’s website states that “more than 2.8 million antibiotic-resistant infections occur in the US each year, and more than 35,000 people die as a result.” And a CDC news release states, “on average, someone in the United States gets an antibiotic-resistant infection every 11 seconds and every 15 minutes someone dies.”
Those are huge numbers.
Clinical laboratory leaders and microbiologists have learned to be vigilant as it relates to dangerously infectious antimicrobial-resistant agents that can result in severe patient harm and death. Therefore, new threats identified in the CDC’s Antibiotic Resistance Threats in the United States report will be of interest.
Drug-resistant Microbes That Pose Severe Risk
The CDC has added the fungus Candida auris (C. auris) and carbapenem-resistant Acinetobacter (a bacteria that can survive for a long time on surfaces) to its list of “urgent threats” to public health, CDC said in the news release. These drug-resistant microbes are among 18 bacteria and fungi posing a greater threat to patients’ health than CDC previously estimated, Live Science reported.
In 2013, the CDC estimated that about two million people each year acquired an antibiotic-resistant (AR) infection that killed as many as 23,000. However, in 2019, the CDC reported that those numbers were low and that the number of deaths due to AR infections in 2013 was about twice that amount. During a news conference following the CDC announcement, Michael Craig (above), a Senior Adviser for the CDC’s Antibiotic Resistance Coordination and Strategy Unit said, “We knew and said [in 2013] that our estimate was conservative … and we were right,” Live Science reported. In 2019, CDC reported 2.8 million antibiotic-resistant infections annually with more than 35,000 related deaths in the US alone. (Photo copyright: Centers for Disease Control and Prevention.)
The CDC considers five threats to be urgent. Including the
latest additions, they are:
Dark Daily has regularly covered the healthcare industry’s ongoing struggle with deadly fungus and bacteria that are responsible for hospital-acquired infections (HAI) and sepsis. This latest CDC report suggests healthcare providers continue to struggle with antimicrobial-resistant agents.
Acinetobacter Threat Increases and C. auris
a New Threat since 2013
Carbapenem-resistant Acinetobacter, a bacterium that
causes pneumonia and bloodstream and urinary tract infections, escalated from
serious to urgent in 2013. About 8,500 infections and 700 deaths were noted by the
CDC in 2017.
C. auris, however, was not addressed in the 2013
report at all. “It’s a pathogen that we didn’t even know about when we wrote
our last report in 2013, and since then it’s circumvented the globe,” said Michael
Craig, Senior Adviser for the CDC’s Antibiotic Resistance Coordination and
Strategy Unit, during a news conference following the CDC announcement, Live
Science reported.
Today, C. auris is better understood. The fungus
resists emerging drugs, can result in severe infections, and can be transmitted
between patients, CDC noted.
By year-end, CDC tracking showed 988 cases in the US.
More Patients Getting Sepsis as Antibiotics Fail: HHS
Study
In a separate study published in Critical Care Medicine, a journal of the Society of Critical Care Medicine (SCCM), the US Department of Health and Human Services (HHS) found that antibiotic-resistant bacteria and fungi are resulting in more people acquiring sepsis, a life-threatening condition, according to an HHS news release.
Sepsis increased by 40% among hospitalized Medicare patients
from 2012 through 2018, HHS reported.
“These (untreatable infections) are happening here and now in the United States in large numbers. This is isn’t some developing world thing. This isn’t a threat for 2050. It’s a threat for here and now,” Cornelius “Neil” Clancy, MD, Associate Chief of Veterans Affairs Pittsburg Health System (VAPHS) and Opportunistic Pathogens, told STAT.
It is troubling to see data about so many patient deaths
related to antibiotic-resistant infections and sepsis cases when the world is
transfixed by the Coronavirus. Nevertheless, it’s important that medical laboratory
leaders and microbiologists keep track of how the US healthcare system is or is
not responding to these new infectious agents. And, to contact infection
control and environmental services colleagues to enhance surveillance, ensure
safe healthcare environments and equipment, and adopt appropriate strategies to
prevent antibiotic-resistant infections.
Researchers believe new findings about genetic changes in C. difficile are a sign that it is becoming more difficult to eradicate
Hospital infection control teams, microbiologists, and clinical laboratory professionals soon may be battling a strain of Clostridium difficile (C. difficile) that is even more resistant to disinfectants and other forms of infection control.
A WSI news release states the researchers “identified genetic changes in the newly-emerging species that allow it to thrive on the Western sugar-rich diet, evade common hospital disinfectants, and spread easily.”
Microbiologists and infectious disease doctors know full well that this means the battle to control HAIs is far from won.
“C. difficile is currently forming a new species with one group specialized to spread in hospital environments. This emerging species has existed for thousands of years, but this is the first time anyone has studied C. difficile genomics in this way to identify it. This particular [bacterium] was primed to take advantage of modern healthcare practices and human diets,” said Nitin Kumar, PhD (above), in the news release. (Photo copyright: Wellcome Sanger Institute.)
Genomic Study Finds New Species of Bacteria Thrive in
Western Hospitals
In the published paper, Nitin Kumar, PhD, Senior Bioinformatician at the Wellcome Sanger Institute and Joint First Author of the study, described a need to better understand the formation of the new bacterial species. To do so, the researchers first collected and cultured 906 strains of C. difficile from humans, animals, and the environment. Next, they sequenced each DNA strain. Then, they compared and analyzed all genomes.
The researchers found that “about 70% of the strain collected specifically from hospital patients shared many notable characteristics,” the New York Post (NYPost) reported.
Hospital medical laboratory leaders will be intrigued by the
researchers’ conclusion that C. difficile is dividing into two separate
species. The new type—dubbed C. difficile clade A—seems to be targeting
sugar-laden foods common in Western diets and easily spreads in hospital
environments, the study notes.
“It’s not uncommon for bacteria to evolve, but this time we actually see what factors are responsible for the evolution,” Kumar told Live Science.
New C. Difficile Loves Sugar, Spreads
Researchers found changes in the DNA and ability of the C.
difficile clade A to metabolize
simple sugars. Common hospital fare, such as “the pudding cups and instant
mashed potatoes that define hospital dining are prime targets for these strains”,
the NYPost explained.
Indeed, C. difficile clade A does have a sweet tooth. It was associated with infection in mice that were put on a sugary “Western” diet, according to the Daily Mail, which reported the researchers found that “tougher” spores enabled the bacteria to fight disinfectants and were, therefore, likely to spread in healthcare environments and among patients.
“The new C. difficile produces spores that are more
resistant and have increased sporulation
and host colonization capacity when glucose or fructose is available for
metabolism. Thus, we report the formation of an emerging C. difficile
species, selected for metabolizing simple dietary sugars and producing high
levels or resistant spores, that is adapted for healthcare-mediated
transmission,” the researchers wrote in Nature Genetics.
Bacteria Pose Risk to Patients
The findings about the new strains of C. difficile bacteria
now taking hold in provider settings are important because hospitalized
patients are among those likely to develop life-threatening diarrhea due to
infection. In particular, people being treated with antibiotics are vulnerable
to hospital-acquired infections, because the drugs eliminate normal gut
bacteria that control the spread of C. difficile bacteria, the
researchers explained.
According to the Centers for Disease Control and Prevention (CDC), C. difficile causes about a half-million infections in patients annually and 15,000 of those infections lead to deaths in the US each year.
New Hospital Foods and Disinfectants Needed
The WSI/LSHTM study suggests hospital representatives should
serve low-sugar diets to patients and purchase stronger disinfectants.
“We show that strains of C. difficile bacteria have continued to evolve in response to modern diets and healthcare systems and reveal that focusing on diet and looking for new disinfectants could help in the fight against this bacteria,” said Trevor Lawley, PhD, Senior Author and Group Leader of the Lawley Lab at the Wellcome Sanger Institute, in the news release.
Microbiologists, infectious disease physicians, and their
associates in nutrition and environmental services can help by understanding
and watching development of the new C. difficile species and offering
possible therapies and approaches toward prevention.
Meanwhile, clinical laboratories and microbiology labs will
want to keep up with research into these new forms of C. difficile, so
that they can identify the strains of this bacteria that are more resistant to
disinfectants and other infection control methods.
Contrary to CMS and Joint Commission programs implemented in 2017 to reduce them, incidents of hospital-acquired infections have risen for the past few years
Nevertheless, a recent Leapfrog Group report indicates hospitals are finding it increasingly difficult to remove infections all together. This has many healthcare leaders concerned.
The report, which was analyzed by Castlight Health, states that the number of hospitals reporting zero infections has declined significantly since 2015, according to a news release. According to the Leapfrog Group’s report:
Two million people acquire HAIs every year;
90,000 people die annually from HAIs;
HAI costs range from $1,000 to $50,000 depending on the infection.
Hospitals spend $28 to $45 billion annually on HAI costs, Healthcare Finance reported.
“I think it’s far too easy to let something slip, so it’s clear that there really needs to be a renewed focus on getting back to zero. We do still see some hospitals that are getting to zero, so it’s clearly possible,” Erica Mobley (above), Leapfrog Group’s Director of Operations, told Fierce Healthcare. (Photo copyright: LinkedIn.)
Regressing Instead of Progressing Toward Total HAI Elimination
Leapfrog Group’s report is based on 2017 hospital survey data submitted by 2,000 providers. The data indicates that in just two years the number of hospitals reporting zero HAIs dropped by up to 50%. The reported HAIs include:
Central line-associated bloodstream infections (CLABSI) occurring in Intensive Care and other units: 12.7% of hospitals reporting zero CLABSI infections in 2017, down from 25% in 2015;
The remaining infection measures studied by Leapfrog Group had less dramatic decreases over the same time period, according to Fierce Healthcare. Nevertheless, they are significant. They include:
Surgical site infections (SSI) following colon surgery: 19% zero infections compared to 23% previously;
Clostridium difficile (C. difficile) inpatient infections: 3% zero inpatient infections in 2017, compared to 5% in 2015.
Joint Commission Studies Antimicrobial Program Progress
Hospitals have revised their antimicrobial programs, which originally operated on a “top-down” structure, to programs that include clinicians from throughout entire provider organizations;
Health information technology (HIT) can enable real-time opportunities to launch antimicrobial therapy and treat patients; and,
Some barriers exist in getting resources to integrate technology and analyze data.
“These programs used expansion of personnel to amplify the antimicrobial stewardship programs’ impact and integrated IT resources into daily workflow to improve efficiency,” the researchers wrote. “Hospital antimicrobial stewardship programs can reduce inappropriate antimicrobial use, length of stay, C. difficile infection, rates of resistant infections, and cost.”
What Do CMS and Joint Commission Expect?
According to Contagion, while the Joint Commission program is part of medication management, CMS places its requirements for the antimicrobial stewardship program under “infection prevention.”
CMS requirements for an antimicrobial stewardship program include:
Developing antimicrobial stewardship program policies and procedures;
Implementing hospital-wide efforts;
Involving antimicrobial stakeholders for focus on antimicrobial use and bacterial resistance;
Setting evidence-based antimicrobial use goals; and,
Reducing effects of antimicrobial use in areas of C. difficile infections and antibiotic resistance.
Leapfrog Group’s data about fewer hospitals reporting zero infections offers opportunities for hospital laboratory microbiology professionals to get involved with hospital-wide antimicrobial program teams and processes and help their hospitals progress back to zero HAIs. Clinical laboratories, both hospital-based and independent, also have opportunities to contribute to improving the antimicrobial stewardship efforts of the physicians who refer them specimens.
