Thursday 23 July 2009

The introduction of new vaccines




The introduction of new vaccines
Smallpox vaccination started in the early 19th century. It was over a hundred years before another vaccine was introduced for widespread use. This was diphtheria toxoid, that was used nationally from 1940. The dates of the introductions of the different vaccines into the routine UK childhood immunisation schedule are shown in the table below.
Disease Routine vaccination started Routine vaccination stopped
Smallpox Early 1800s 1971
Diphtheria 1941
Tuberculosis (TB) 1953 2005
Polio 1956
Pertussis (whooping cough) 1958
Tetanus 1961 (in new 3 in 1 DTP)
Measles 1968
Rubella (German measles) 1971 (for teenage girls only)
MMR 1988
Hib (Haemophilus Influenzae) 1992
MMR 1996 (2nd MMR at 4 years)
Men C (Meningitis C) 1999
Pneumococcus 2006
The increasing vaccine burden
The number of vaccines routinely given to every child in the UK over the last hundred years is shown graphically below.
There have been calls over recent years to introduce several new vaccines to the UK childhood immunisation schedule. These include hepatitis B, flu, chickenpox, rotavirus and hepatitis A. All these vaccines are given routinely in the USA.
If they were all given to babies in the UK over the coming years, the number of vaccines received by five years of age may be as many as 43, as shown below.
A WHO doctor has already described the 21st century as the “Century of the Vaccines.”[1] There appears to be endless enthusiasm for introducing a seemingly unlimited number of vaccines. But there is no discussion on the maximum number of vaccines that a child should be given. Indeed most vaccine experts appear unconcerned about the possibility that we may, at some stage, be giving some children too many vaccines. Instead they talk about children being able to handle “thousands” of vaccines at any one time. [2] [3]
[1] de Quadros CA. Roadmap for vaccinations in the new millennium. Lancet 1999; 354: 2006-7.
[2] Offit PA et al. Addressing parents' concerns: do multiple vaccines overwhelm or weaken the infant's immune system? Pediatrics 2002; 109(1): 124-9.
[3] Sir Liam Donaldson, Chief Medical Officer. February 2006.

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