The resistance: can viruses save us from drug-defying superbugs?


Bacteriophages, or phages, are viruses that kill bacteria by latching on to and entering target cells and then multiplying and killing the host cell. Phages only attack bacteria, they can’t enter human cells, but the phage must be specific to the bacteria's DNA, which presents an obstacle because most health systems lack the capacity for such testing. To overcome this, researchers are developing phage cocktails that could be applied more widely, similar to antibiotics. A few locations around the world currently use phage treatment, particularly to treat the six most virulent antibiotic-resistant bacteria.

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