A cocktail vaccine is a vaccine that combines multiple antigens into a single formulation. This increases the chances that the vaccine will be effective against a variety of pathogens. Cocktail vaccines are being developed to address the increasing problem of antibiotic resistance.

The first cocktail vaccine was developed in the early 1900s. It was a combination of three antigens: diphtheria, tetanus, and pertussis. This vaccine was known as DTP. Other cocktail vaccines were developed in the 1950s, including the polio …