If this is like the 1918 flu, then the only way to prevent this is basic hygene. Washing hands with warm water and soap.
I dont think there is a vaccine for this. Remeber when Ford though we were going to have a outbreak . The vaccine did more damage than the flu did.
This could be a very bad outbreak. Knowledge can be your best weapon.
Look in any old cemetery at the grave markers from 1918 to 1919. Entire families were buried on the same day or within days of each other.