Paraphrase this sentence: "Vaccines have become a key tool in protecting public health".
Vaccines have emerged as a vital instrument in safeguarding the well-being of the general population.
Complete the following task based on the instruction and optional input provided.### Instruction:
Paraphrase this sentence: "Vaccines have become a key tool in protecting public health".

### Output:
Vaccines have emerged as a vital instrument in safeguarding the well-being of the general population.