virus

/vi.ʁys/
1.
nounmasculine

biological virus (infectious agent)

Ce virus se propage rapidement entre les personnes non vaccinées.

This virus spreads quickly among unvaccinated people.

2.
nounmasculine

computer virus (malicious software that infects computers)

Mon ordinateur a été infecté par un virus ; j'ai dû réinstaller le système.

My computer was infected by a virus; I had to reinstall the OS.

3.
nounmasculine

a figurative 'bug' or sudden enthusiasm/obsession for something (e.g., 'the travel bug')

Il a attrapé le virus du voyage et ne pense qu'à préparer sa valise.

He caught the travel bug and only thinks about packing his suitcase.