This is the 12131st most frequent French word.
vacciner
To vaccinate.
Here, "vacciner" is used as a verb to describe the action of administering a vaccine to someone.
Le médecin va vacciner les enfants contre la grippe.
The doctor will vaccinate the children against the flu.
In this sentence, "se faire vacciner" indicates the action of receiving a vaccine, showing the reflexive usage of the verb.
On doit se faire vacciner avant de voyager dans certains pays.
One must get vaccinated before traveling to certain countries.
Here, "vacciner" is part of a phrase describing the organized effort intended to carry out widespread vaccination.