evidence: The CDC does have the power to isolate people with certain infectious diseases and quarantine those who had contact with an infected person. However, many of the details of this assertion are wrong. People can’t be quarantined for just having a fever; they have to be shown to have been exposed to one of a specific set of diseases. Most quarantines are done voluntarily, not by force of the government. And vaccination is not a ticket out of quarantine. Most quarantine decisions are up to states and localities, rather than the CDC.