21st century plague discovered by scientists

A new disease that is passed from rats to humans via fleas, much like the Black Death, has been discovered by scientists. The bacteria can cause serious heart disease in humans are being spread by rat fleas, sparking concern that the infections could become a bigger problem in humans. Research published in the Journal of Medical Microbiology suggests that brown rats, the biggest and most common rats in Europe, may now be carrying the bacteria. Since the early 1990s, more than 20 species of Bartonella bacteria have been discovered. They are considered to be emerging pathogens, because they can cause serious illness in humans worldwide from heart disease to infection of the spleen and nervous system. "A new species called Bartonella rochalimae was recently discovered in a patient with an enlarged spleen who had travelled to South America," said Professor Chao-Chin Chang from the National Chung Hsing University in Taiwan. "This event raised concern that it could be a newly emerged pathogens. Therefore, we decided to investigate further to understand if rodents living close to human environment could carry this bacteria." Scientists have found that rodents carry several pathogenic species of Bartonella, such as B. elizabethae, which can cause endocarditis and B. grahamii, which was found to cause neuroretinitis...............

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