Yıl 2019, Cilt 9 , Sayı 3, Sayfalar 295 - 299 2019-09-30

Autism and Vaccinations: Does Google side with Science?

Semih ERDEN [1] , Kevser NALBANT [2] , Hurşit FERAHKAYA [3]


Background/Aims: Genetic and environmental factors are thought to play a role in the etiology of autism spectrum disorder. Studies on vaccination from environmental factors strongly suggest that there is no relationship between vaccine and autism development. However, a part of society still believes that vaccines lead to autism. In this study, it is aimed to investigate the distribution and reliability of the articles on the internet which is the first place that families apply to be informed about this subject. In this study, we searched "autism vaccine" phrase in Google’s version for Turkey.

Methods: In this study, we searched "autism vaccine" phrase in Google’s version for Turkey. The information on each web site was grouped as true, false and contradictory. We used the JAMA score, a standard indicator of health information quality, to assess the basic reliability index of the article. The JAMA score takes into account whether a website declares an author, the date of writing, financial ownership and whether the information is supported by references.

Results: A total of 124 websites were listed as a result of this search. When irrelevant and inaccessible sites were removed, 102 web pages were evaluated. 76 (74.5%) of the results were correct, 20 (19.6%) were wrong and 6 (5.9%) were contradictory. No significant difference was found between the total JAMA scores of the websites with true-false information. However, the JAMA score of the correct information was higher. No significant relationship was found between the accuracy of the information and the ranking of the sites. However, six of the top ten results were true, three were false, and one contained contradictory information.

Conclusions: These results show that the correct information is not listed primarily in the top positions and the information about autism and vaccination is in a similar distribution. It is important that the internet environment is closely monitored by scientists because of the information affecting the vaccination.

autim, vaccination, public health, internet, google
  • Baio J. Prevalence of autism spectrum disorder among children aged 8 years-autism and developmental disabilities monitoring network, 11 sites, United States, 2010. 2014.
  • Baio J, Wiggins L, Christensen DL, Maenner MJ, Daniels J, Warren Z, et al. Prevalence of autism spectrum disorder among children aged 8 years—autism and developmental disabilities monitoring network, 11 sites, United States, 2014. MMWR Surveillance Summaries. 2018;67(6):1.
  • Haverkate M, D'Ancona F, Giambi C, Johansen K, Lopalco PL, Cozza V, et al. Mandatory and recommended vaccination in the EU, Iceland and Norway: results of the VENICE 2010 survey on the ways of implementing national vaccination programmes. 2012.
  • Wakefield AJ, Murch SH, Anthony A, Linnell J, Casson DM, Malik M, et al. RETRACTED: Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children. Elsevier; 1998.
  • Murch SH, Anthony A, Casson DH, Malik M, Berelowitz M, Dhillon AP, et al. Retraction of an interpretation. The Lancet. 2004;363(9411):750.
  • Stern AM, Markel H. The history of vaccines and immunization: familiar patterns, new challenges. Health Aff (Millwood). 2005;24(3):611-21.
  • André FE. Vaccinology: past achievements, present roadblocks and future promises. Vaccine. 2003;21(7-8):593-5.
  • Bonanni P. Demographic impact of vaccination: a review. Vaccine. 1999;17:S120-S5.
  • Fox S, Duggan M. Health online 2013. Health (N Y). 2013;2013:1-55.
  • García-Basteiro AL, Álvarez-Pasquín M-J, Mena G, Llupià A, Aldea M, Sequera V-G, et al. A public-professional web-bridge for vaccines and vaccination: User concerns about vaccine safety. Vaccine. 2012;30(25):3798-805.
  • Betsch C, Brewer NT, Brocard P, Davies P, Gaissmaier W, Haase N, et al. Opportunities and challenges of Web 2.0 for vaccination decisions. Vaccine. 2012;30(25):3727-33.
  • Jang SM, Mckeever BW, Mckeever R, Kim JK. From social media to mainstream news: The information flow of the vaccine-autism controversy in the US, Canada, and the UK. Health communication. 2019;34(1):110-7.
  • Arif N, Al-Jefri M, Bizzi IH, Perano GB, Goldman M, Haq I, et al. Fake news or weak science? Visibility and characterization of anti-vaccine webpages returned by Google in different languages and countries. Front Immunol. 2018;9:1215.
  • Ruiz JB, Bell RA. Understanding vaccination resistance: vaccine search term selection bias and the valence of retrieved information. Vaccine. 2014;32(44):5776-80.
  • Venkatraman A, Garg N, Kumar N. Greater freedom of speech on Web 2.0 correlates with dominance of views linking vaccines to autism. Vaccine. 2015;33(12):1422-5.
  • Kollia B, Kamowski-Shakibai MT, Basch CH, Clark A. Sources and content of popular online videos about autism spectrum disorders. Health promotion perspectives. 2017;7(4):238.
Birincil Dil en
Konular Sağlık Bilimleri ve Hizmetleri
Bölüm Orjinal Araştırma

Orcid: 0000-0002-7723-9584
Yazar: Semih ERDEN (Sorumlu Yazar)
Ülke: Turkey

Orcid: 0000-0003-4261-1013
Yazar: Kevser NALBANT

Orcid: 0000-0002-8472-6743
Yazar: Hurşit FERAHKAYA


Yayımlanma Tarihi : 30 Eylül 2019

EndNote %0 Journal of Contemporary Medicine Autism and Vaccinations: Does Google side with Science? %A Semih ERDEN , Kevser NALBANT , Hurşit FERAHKAYA %T Autism and Vaccinations: Does Google side with Science? %D 2019 %J Journal of Contemporary Medicine %P -2667-7180 %V 9 %N 3 %R doi: 10.16899/jcm.607311 %U 10.16899/jcm.607311