Pediatrician bloggers frequently address vaccinations and most provide accurate information, according to a recent investigation. Therefore, pediatrician blogs may be a new source of vaccine education for parents via social media. Investigators conducted a content analysis of vaccine information on pediatrician blogs. A national sample of pediatrician blogs was identified using a search rubric of terms applied to multiple search engines. 56 blogs fit inclusion criteria, which were: (1) the author identified as a pediatrician, (2) US based, and (3) ≥1 post since January 1, 2014. They found:

• 324 unique blog posts containing information about vaccines on 31 pediatrician blogs were identified.
• The most common major topic was vaccine-specific posts (36%); influenza and MMR were the most prevalent.
• Other common topics included: activism against anti-vaccine information (21%), vaccine exemptions (10%), autism (8%), and vaccine safety (6%).
• Activism against anti-vaccine information was the topic with the most reader engagement.
• The most common sources cited were governmental organizations such as the Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO) (34%), and medical journals (31%).
• All blogs except 2 included information that was consistent with CDC information.