Does an influenza shot invalidate the fast of one who fasted the Day of Ashura?

Fasting for someone who took an injection for treatment on the day of Ashura or any other day is valid because an injection is neither food nor drink, nor does it carry their meaning. There is no evidence from the Prophet, peace and blessings be upon him, indicating that a fasting person breaks their fast with everything that enters their body; rather, breaking the fast is through eating and drinking.