The polio, diphtheria, and tetanus vaccine is a combination vaccine that protects against these three serious illnesses. Polio is a highly infectious disease that can cause paralysis, while diphtheria and tetanus are bacterial infections that can lead to respiratory problems and muscle stiffness. The vaccine works by stimulating the immune system to produce antibodies against these illnesses, which helps to protect against them.
The polio, diphtheria, and tetanus vaccine is generally well-tolerated, but you may experience mild side effects such as soreness at the injection site or feeling unwell. Serious side effects are rare.