vaccine

Genetic modification of bacteria leads to new vaccine

Crying baby being injected

A new type of vaccine for pneumonia based on genetically engineered bacteria has been developed, and may help in the fight against many other infectious diseases. The vaccine, which protects against a virulent form of the bacterium Streptococcus pnuemoniae, works by introducing a modified form of the bacterium that produces less pneumolysin – a toxic
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