Before revision:  We report a consistent amount of low-credibility information shared on Twitter , whose prevalence is  comparable to high-credibility information with a 1:4 ratio in the number of shared tweets .
After revision:  We report a consistent amount of low-credibility information already circulating on Twitter alongside vaccine-related conversations , whose prevalence is comparable to high-credibility information with a 1:4 ratio in the number of shared tweets .