Is immunising against tetanus, diphtheria and polio at the age of 14 imporant?

Depends: If no booster since the 4-5yr visit, the protection for pertussis and tetanus is weakening & boosters for both bring a patient up to a protected level.We do not generally give polio after a 4-5 years of age if the primary series is completed.Poor pertussis immunity leaves you open to the "100 days cough" as a teen or older & spreading the disease to infants.Poor tetanus coverage can let u get it.

Yes it is important: Usually these vaccines are given in first and second year and then booster 4to6 years And TDap is given at age of 11 or 12. But if missed at 11or12 then it can be given at 14 years of age