The claim: Doctors are pushing an 'untested' flu vaccine with a 'very low strain' of the coronavirus in it. As flu season nears, doctors around the country are advocating that people receive the seasonal influenza vaccine, which health experts say is more important than usual amid the COVID-19 pandemic. … But some claims on social media have advised against taking the vaccine by incorrectly conflating the flu shot with a potential vaccine for the coronavirus, the latter of which is still in development.