This is just not happen in Usa only it also happen in india too. So many politicians also involve it. Specially opposition party leaders. I am still confused why they always oppose government plan. Is necessary to oppose every plan of government. UPA (congress party and some others too) always oppose and they try to spread fake news about vaccine. First they try to spread misinfo of vaccine and side effects and now they are saying if we don't have corona then why we will take doses of VACCINE. I think this is the reason they are in opposition and not in government leadership. Hope it will end as soon as possible in india , usa and in all country where this happen.

"Facebook’s renewed pledge to eradicate vaccine hoaxes and misinformation was informed by a January ruling from the company’s oversight board, an internally funded third-party review body."