Vaccine Coverage Calculation Definitions

Age evaluated	Vaccine	Denominator definition	Numerator definition
12 months	DTaP/IPV/Hib*	Total number of children for whom the PCT is responsible on the last day of a defined quarter whose first birthday falls within that quarter.	Total number of children for whom the PCT is responsible on the last day of a defined quarter who received 3 doses of DTaP/IPV/Hib vaccine at any time by their first birthday.
12 months	MenC Primary		Total number of children for whom the PCT is responsible on the last day of a defined quarter who received 2 doses of MenC at any time by their first birthday
12 months	PCV primary		Total number of children for whom the PCT is responsible on the last day of a defined quarter who received 2 doses of PCV vaccine at any time by their first birthday.
24 months	DTaP/IPV/Hib*	Total number of children for whom the PCT is responsible on the last day of a defined quarter whose second birthday falls within that quarter.	Total number of children for whom the PCT is responsible on the last day of the quarter who received 3 doses of DTaP/IPV/Hib vaccine at any time by their second birthday
24 months	MMR		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of MMR vaccine on or after their first birthday and at any time up to their second birthday
24 months	Infant MenC Primary		Total number of children aged 24 months for whom the PCT is responsible on the last day of the quarter who received at least 2 doses of MenC vaccine before their first birthday
24 months	Hib/MenC booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of Hib/MenC booster vaccine on or after their first birthday and at any time up to their second birthday
24 months	PCV booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of PCV booster vaccine on or after their first birthday and at any time up to their second birthday
5 years	DT/Pol**	Total number of children for whom the PCT is responsible on the last day of a defined quarter whose fifth birthday falls within that quarter	Total number of children for whom the PCT is responsible on the last day of the quarter who received 3 doses of Diphtheria, Tetanus and Polio vaccine at any time by their fifth birthday
5 years	Pertussis**		Total number of children for whom the PCT is responsible on the last day of the quarter who received 3 doses of a Pertussis vaccine at any time by their fifth birthday
5 years	MMR		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of MMR on or after their first birthday and at any time up to their fifth birthday
5 years	Infant Hib** primary		Total number of children aged 5 years for whom the PCT is responsible on the last day of the quarter who received at least 23 doses of Hib vaccine by their first birthday
5 years	Infant MenC primary		Total number of children aged 5 years for whom the PCT is responsible on the last day of the quarter who received 2 doses of MenC vaccine by their first birthday
5 years	PCV primary		Total number of children aged 5 years for whom the PCT is responsible on the last day of the quarter who received 2 doses of PCV vaccine by their first birthday
5 years	DTaP/Polio booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 4 doses of Diphtheria, Tetanus, aPertussis and Polio vaccine by their fifth birthday
5 years	MMR booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 2 doses of MMR vaccine by their fifth birthday (where the first dose was given on or after the first birthday)
5 years	Hib/MenC booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of Hib/MenC booster vaccine on or after their first birthday and at any time up to their fifth birthday
5 years	PCV booster		Total number of children for whom the PCT is responsible on the last day of the quarter who received 1 dose of PCV booster vaccine on or after their first birthday and at any time up to their fifth birthday

* may need to use discretion for children immunised/partially immunised outside the UK where different vaccines are offered

** children born before January 2004 could have had DT rather than DTP as part of their primary course and so pertussis has been monitored separately. The five year cohorts now being monitored by the COVER programme are all born after January 2004 and so the number completing 3 doses of DT/Pol and Pertussis should be the same. Children born after June 2004 will have been offered DTaP/IPV/Hib for their primary course. May need to use discretion for children immunised/partially immunised outside the UK where different vaccines are offered.

Last reviewed: 18 May 2011