Facebook May Take Extra Steps to Remove Anti-Vaccine MisinformationConspiracy theories on the site may have contributed to a measles outbreak.

Facebook is "exploring additional measures" to fightanti-vaccinedisinformation, according toBloomberg. Content discouraging parents from vaccinating their children has been rampant on the site, particularly in Facebook Groups, and may have contributed to a measles outbreak in Washington State. That caught the attention of U.S. Representative Adam Schiff, whowrote a letterto Facebook and Google asking them to address the problem.

Schiff noted that Facebook is surfacing and recommending messages that may pose a threat to public health. For instance,the Guardianrecently reportedthat Facebook was accepting and promoting ads from anti-vax groups. "Repetition of information, even if false, can often be mistaken for accuracy," he wrote. "The algorithms which power these services are not designed to distinguish quality information from misinformation."

Facebook said that it's "exploring additional measures to best combat the problem," including "reducing or removing this type of content from recommendations, including 'Groups You Should Join,' and demoting it in search results, while also ensuring that higher quality and more authoritative information is available."

The resurgence of measles is of serious concern, with extended outbreaks occurring across regions, and particularly in countries that had achieved, or were close to achieving measles elimination.

Google recently said YouTube wouldrestrictvideo recommendations that "could misinform users in harmful ways,"includinganti-vaccine videos. It also said recently that would provide links alongside videos on "historical and scientific topics that have often been subject to misinformation." Until recently, anti-vax videos topped results for "vaccine" searches, but thetop resultsnow appear to be from sites likeLast Week Tonightattempting to dispel vaccination myths. However, Robert F. Kennedy'swidely debunkedanti-vax documentary is still in the top 10.

The CDC notes that vaccines have been proven safe and effective and only result in minor side effects. However, avoiding them can put not just your own children but others at risk, particularly small babies who have yet to be inoculated. "Without urgent efforts to increase vaccination coverage ... we risk losing decades of progress in protecting children and communities,"说Unicef's Dr. Soumya Swaminathan.