New species of antibiotic-resistant bacteria found in the blood samples of two patients in China reveals a study. These bacteria if found in blood can lead to deadly infections.
The study showed that the patients were carrying unidentified species of Enterobacter huaxiensis and Enterobacter chuandaensis that did not respond to penicillin or the cephalosporin group of antibiotics.
Enterobacteriaceae exist in the gut and are usually harmless. However, they can cause meningitis if they enter the blood or pneumonia if they get into the lungs, reported Daily Mail.
Importantly, genetic analysis of the microorganisms revealed they were 'previously unknown', said the study published in the International Journal of Systematic and Evolutionary Microbiology.
In addition, the newly-discovered strains differed from other Enterobacteriaceae species by their ability to break down certain sugars and potassium salts.
The world is heading for a 'post-antibiotic' era if no action is taken, World Health Organization has warned.
Pneumonia, tuberculosis, gonorrhoea and salmonellosis are among the growing number of infections that are becoming harder to treat.