Medical experts warned Samoans against heeding anti-vax messages spread by social media influencers amid a deadly measles outbreak in the Pacific nation that has so far claimed 39 lives since late October — most of them children.

"Forcing a medical procedure on an entire country, especially one that is proving to be ineffective, dangerous and making the virus more deadly, is straight up barbaric," she wrote on Facebook.

In the past week, more than 45,000 people have been vaccinated in Samoa