Because it seems both of them can't get vaccinated. According to the
NY Times, the Badministration is using money that was intended for vaccinating children to pay for flu vaccines for adults, which means that they're trying to cover up the recent flu vaccine mismanagement (and throw a little more money GlaxoSmithKline's way) by taking standard childhood preventative vaccinations away from the disadvantaged.
Oh, and did I mention the flu vaccines are expiramental?