Generally, children, adults and pregnant women get the same vaccine to protect them against the flu. However, if your child is under 9 years old and has not been vaccinated before, they will need to get 2 doses of the vaccine, at least 4 weeks apart, in their first year. In 2018, 2 new flu vaccines (Fluzone High-Dose and Fluad Quad) became available for people aged 65 years and over. These vaccines are not available for people younger than 65. (Fluzone High-Dose is not available in 2021.)