Why vaccines work when drugs no longer do - April, 2018
For the past two years, drug-resistant typhoid has plagued Pakistan and is soon expected to make its way around the world. The vomiting, fever, and headaches caused by the bacterium are rarely fatal when treated — but now doctors are wondering how much longer our drugs will work against the pathogen. Interestingly, a key weapon in the fight against drug resistant typhoid is vaccination. Salmonella Typhi evolves resistance to antibiotics quickly, but has yet to evolve resistance to our vaccines, despite over a century of use.
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