Which type of vaccines includes polysaccharide vaccines and toxoids?

Inactivated vaccines are the correct category that includes both polysaccharide vaccines and toxoids. These vaccines are made from viruses or bacteria that have been killed or inactivated, which means they cannot cause disease.

Polysaccharide vaccines are specifically derived from the sugars that make up the capsule of certain bacteria. They trigger an immune response primarily focused on the polysaccharide surface, which helps the body recognize and respond to the pathogen in the future.

Toxoids are inactivated toxic compounds that can still induce an immune response without causing harm. These are typically used against bacteria that produce toxins, allowing the body to build immunity to the toxin rather than the bacteria itself.

In contrast, live attenuated vaccines contain live but weakened forms of the pathogen; subunit vaccines include only parts of the pathogen (like proteins) rather than whole inactivated organisms; and recombinant vaccines involve inserting genetic material from a pathogen into another organism to produce antigens. Therefore, inactivated vaccines are the most fitting classification for polysaccharide vaccines and toxoids due to their shared characteristic of containing inactivated components that elicit an immune response.