What’s the difference between all the vaccines containing diphtheria and tetanus toxoids and pertussis vaccine?
Ingredients. The acellular pertussis vaccines is now recommended to be given at least once to all adults. There is no recommendation for more than 1 adult booster, but I would not be surprised to see it given for every booster (7-10 yrs) in the future. The other differences are related to the specific type of antigens and quatity in each vaccine. Antigens are the material that triggers your immunity.
Acellular pertussis. The difference in the standard td (tetanus/ diptheria) had no pertussis vaccine and over recent years - there has been an increase in the adult pertussis (whooping cough) cases - due to loss of antibodies from childhood. So now the td shot that everyone gets every 7-10 years has pertusis included - the acellular type just means there is no actual pertusis - just proteins for antibody response.