Dose of flu and Virus

Virus and dose of flu are semantically related. In some cases you can use "Virus" instead a noun phrase "Dose of flu".

Virus noun - (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein.

Dose of flu and virus are semantically related. You can use "Dose of flu" instead a noun "Virus".

Nearby Word: viral