Dimitri received a flu vaccination earlier in the year. However, he has just been tested and has a confirmed case of the flu. Why did Dimitri most likely get the flu? Vaccinations are not always effective.

Dimitri received a flu vaccination earlier in the year. However, he has just been tested and has a confirmed case of the flu.

Why did Dimitri most likely get the flu?

Vaccinations are not always effective.
Vaccinations are not effective if hygiene is poor.
Vaccinations give individuals the flu with full symptoms.
Vaccinations work only when provided at the onset of the disease.

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