Microorganisms such as bacteria and yeast are used to produce modern vaccines safely and efficiently. This technology allows for vaccines against diseases like hepatitis B, measles, and influenza. The process relies on microorganisms to produce immune proteins that stimulate the body to produce antibodies. Biotechnology also enables the rapid development of new vaccines to combat emerging diseases. These innovations enhance public health, prevent epidemics, and reduce mortality rates associated with infections, making biotechnology an essential tool in global healthcare.