increase in anti-vaccine protests and threats to their safety. cnn health reporter jacqueline howard is joining me now with more. i find this so disturbing and there are real threats, real harassment. >> there is definitely genuine concern. i spoke with the head of the national association of country and city health officials, and she says that anytime a new covid-19 mitigation measure is introduced to the public, whether it's masks or vaccines, that typically leads to an increase in the intimidating threats and harassment that public health officers face. and we all know that the nation is approaching another mitigation measure, vaccines for kids. have a listen. >> the rollout of the pediatric vaccine is another critical turning point, and we anticipate that there will be people who may again target public health officials and their messaging related to the rollout of this latest mitigation measure.