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Antibiotic-resistant Bacterial Infection on the Rise in Children

by Anjali Aryamvally on May 12, 2018 at 1:14 PM
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Antibiotic-resistant Bacterial Infection on the Rise in Children

Antibiotic-resistant Acinetobacter baumannii infections are on the rise among children across the United States, according to a study published in the Journal of the Pediatric Infectious Diseases Society. Acinetobacter baumannii infections are also one of the most common hospital-acquired infections in the US.

"Acinetobacter are bacteria known to cause serious infections and notoriously difficult to treat because of growing antibiotic resistance. The bacteria survive for long periods in the environment," said study primary author Dr. Latania Logan, chief of pediatric infectious diseases and associate professor of pediatrics at Rush University Medical Center.

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The research examined national and regional trends of antibiotic resistance in clinical specimens over a 13-year period. The data was taken from The Surveillance Network Database, a network of 300 laboratories distributed throughout the U.S. and is compiled by the Centers for Disease Dynamics Economics and Policy in Washington, D.C.

Children with chronic conditions are at higher risk of infection

Because A. baumannii is an infection caused by bacteria that takes advantage of patients with compromised immune systems, children with a chronic condition are at a higher risk of infections of the lung, urinary tract, or other sites after surgery, intubation, trauma, or catheterization. The amount of A. baumannii samples in infected children that were resistant to the antibiotics cephalosporin and carbapenem increased between 1999 and 2012 overall. However, the authors of the study noted a slight decline after a peak in 2008. Antibiotic stewardship guidelines released in 2007 or infection control guidance specifically designed to combat multi-drug resistant A. baumannii in health care settings may have been related to the decrease.
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"While we are encouraged by the slight downtrend in resistance after 2008, there is still an overall increase in these infections. Further studies are needed to assess the most effective prevention strategies in children," Logan said.

'A perfect storm' of drug resistant infections

A. baumannii has numerous ways that protect it from antibiotics. The bacteria are able to protect themselves by using genetic adaptations that support survival in dry, harsh environments, and additionally have in place several mechanisms to render antibiotics ineffective. In this situation, "a perfect storm" results, Logan said. As a result, highly resistant A. baumannii infections are increasingly being reported worldwide.

The study results show that the number of cephalosporin resistant A baumannii increased from 13.2 percent of infections in 1999 to 23.4 percent in 2012, whereas the number of carbapenem resistant A baumannii increased from 0.6 percent in 1999 to 6.1 percent in 2012. From 1999 to 2012, the proportion of cephalosporin resistant and carbapenem resistant bacteria among all A baumannii increased each year by 3 percent and 8 percent, respectively After 2008, a downward trend was observed, but resistance remained higher than the 1999 baseline.

"It is encouraging to see the downtrend after 2008, but we need to continue to monitor," said the study co-author Dr. Sumanth Gandra, a resident scholar in the Center For Disease Dynamics, Economics & Policy, an independent research initiative based in Washington, DC and New Delhi, India.



Source: Eurekalert
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