Chronic infection is, in a way, the new emerging infectious disease. Many pathogens are relatively tenacious when they infect elderly individuals or individuals who are otherwise not fully immunocompetent, and such individuals are, thanks to modern medical technology and practice, more common in the population. Resistant bacteria can cause chronic infection. It is interesting to see more research oriented specifically towards the problem of chronic infection as a problem in and of itself, and a paper just out by Hannan, Mysorekar, Hung, Isaacson-Schmit and Hultgren, in PLoS Pathogens, is an interesting and important example of one such research project.
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