Definition: Serovaccine is a type of vaccine that uses live, attenuated (less harmful) vaccines to protect against a specific disease. It's different from traditional vaccines because it doesn't contain any killed or weakened viruses, but instead uses live virus particles that have been genetically modified and engineered to be harmless. This makes the serovaccine less likely to cause serious illness or death in the recipient, as well as being easier to produce and use. Serovaccines are often used to protect against diseases