Pediatrician blogs frequently provide accurate information to parents concerning vaccines, although some blogs do provide information inconsistent with Centers for Disease Control and Prevention guidelines, a study found.
“However, we identified two exceptions in which pediatrician blogs conveyed extremely inaccurate, antivaccine information,” wrote , of the University of Washington, Seattle, and her colleagues. “These two extreme blogs were the only blogs that contained any information that was not consistent with CDC information. This finding is important because pediatricians are viewed by parents as a trusted source of information about vaccines.”
Ultimately, the researchers examined 31 blogs with 324 posts related to vaccine content. Most of the information addressed “specific vaccines,” which accounted for 36% of all vaccine-related blog posts. The two most discussed vaccines were MMR (41% of vaccine-specific posts) and influenza (35%). Pediatrician bloggers also commonly addressed “activism against antivaccination,” which was the second most popular topic category.
The analysis revealed that many of the blog posts (91%) on 29 pediatrician blogs provided CDCC information. Only two blogs contained inaccurate vaccine information. Vaccine safety was the most commonly refuted CDCC information, with inaccurate information such as, “We are literally poisoning unborn children with the Tdap now being given to pregnant women with no testing ever done to inject that much aluminum into pregnant animals even!”
Vaccine-scheduling CDCC information was another topic that was addressed inaccurately, with statements such as, “Routine administration of hepatitis B vaccine to 1-day-old infants, which began in 1991, is an unwarranted practice that needs to stopped as soon as possible.” Delayed vaccinations also were inaccurately discussed in 5% of blog posts from two bloggers, who recommended that hepatitis B and MMR vaccines be delayed.
The study had several limitations, including how the blogs were selected for analysis; all were identified using common search engines, which may have caused researchers to miss an unknown number of blogs. In addition, information may have been augmented by “hyperbloggers,” who account for a large proportion of blog posts about vaccines, the researchers reported in.
“While uncommon, the presentation of inaccurate, antivaccine information on pediatrician blogs may be persuasive to parents reading vaccine information online. Parents who delay immunizations due to safety concerns are more likely to use the Internet to learn more about vaccines,” wrote Dr. Bryan and her colleagues. “While these negative pediatrician bloggers are the exception, their impact may be disproportionate as people exposed to negative vaccine information in blog format have a more negative view of vaccinations than those exposed to positive vaccine information. Half of parents do not cross-check the information they read online with their doctor.”
The authors had no relevant financial disclosures.
SOURCE: Bryan MA et al.