Which live attenuated vaccine is commonly used for human immunization?

The choice of the live attenuated vaccine commonly used for human immunization is the measles vaccine. Live attenuated vaccines are made from pathogens that have been weakened so that they cannot cause disease in healthy individuals but can still provoke an immune response. The measles vaccine is derived from a live, attenuated strain of the measles virus and is highly effective at preventing measles, one of the most contagious diseases.

In addition to its effectiveness, the measles vaccine is part of the measles-mumps-rubella (MMR) vaccination, which is routinely administered to children to ensure immunity against these diseases. This type of vaccine stimulates both the humoral and cell-mediated immune responses, leading to long-lasting immunity.

In contrast, the other vaccines listed have different characteristics. The polio vaccine is available in both inactivated (IPV) and live attenuated (OPV) forms, but OPV is not commonly used in many countries due to the risk of vaccine-derived polio. Tetanus vaccines are inactivated toxoids, and do not contain live pathogens. The influenza vaccine can be inactivated or live attenuated; however, the live version is used less frequently and is only one of several formats available. Thus, the