Posts

Vaccines and Autism: Science or Hoax?

Boy getting vaccineThe controversy surrounding the relationship of common childhood vaccines and autism has been raging for nearly two decades. However, the debate is comprised of about 10% science and 90% politics and media exposure. In the wake of the most recent revelation that Andrew Wakefield, MD, the original author of the 1998 article linking autism to MMR vaccinations falsified medical history on nearly all of the patients that comprised his study http://www.cnn.com/2011/HEALTH/01/05/autism.vaccines/index.html, many families are left to wonder if they can really trust any medical advice. The impact of Wakefield’s article has done egregious harm to the general health of children worldwide. While the article was ultimately retracted by the publishing journal and Wakefield himself was stripped of his medical license in May of 2010, many countries noticed a precipitous drop in childhood vaccinations in the past decade. Surges of measles outbreaks rose in the aftermath and the CDC reported that 90% of the outbreaks in th US of measles were in children not vaccinated.

In addition to the impact on general medical care for children, popular media sources were quick to raise concerns about the safety of childhood vaccines and the preservatives used in them. With the most recent revelation that the original data may have been fabricated, many parents wonder if there is any way to make a reasonable decision about vaccinations.

The Relationship Between Vaccines and Autism

There is some science that families can draw upon. Large scale epidemiology studies are available that shed light into the relationship of vaccines and autism. In my own practice, I tend to rely upon studies that track live births over long periods of time in several geographic regions. For example, the city of Yokohama, Japan decided to terminate their MMR vaccine program that ran from 1988 to 1993 and institute an alternative program. With the new system, the rates of vaccinations fell to under 2% of the population between 1993 and 1998. This rapid change provided an ideal model to study the rates of autism since essentially the MMR vaccination rate dropped to nothing. Results from the study indicated that autism rates rose dramatically during the 1993 to 1998 time frame and could obviously not be attributed to MMR vaccines (Honda, Shimizu & Rutter, 2005). Studies conducted in Denmark (Madsen et al., 2002) and the UK (Smeeth et al., 2004) also demonstrated no relationship between autism rates and MMR vaccinations. Read more