A recent study has shed light on the spread of a deadly antibiotic-resistant superbug, Acinetobacter baumannii, which has become a major concern for healthcare systems worldwide. The research, led by scientists from the University of East Anglia, used hospital samples from the 1970s to track the evolution of the bacterium.
Evolution of the Superbug
The study found that the bacterium has adapted over time, accumulating small changes that have made it resistant to antibiotics. The researchers identified two major genetic elements that have contributed to the bacterium’s ability to survive treatment, including a gene called oxa23, which is known for conferring resistance to powerful antibiotics.
The team also discovered that the bacterium can be divided into at least four distinct groups, each with its own evolutionary path. One of these groups, known as ‘group 4’, appears to have branched off independently and is now being detected more frequently in recent samples, raising concerns about the potential for a new and more adapted variant to emerge.
The research highlights the importance of understanding how antibiotic-resistant bacteria respond to changes in antibiotic use over time, in order to guide policies on how to use antibiotics effectively and prevent the spread of these superbugs.
Original reporting: KTBS 3 (Shreveport) — read the source article.
