virus
The French word for 'virus' is 'virus', pronounced as 'vee-rus'. It is used in the same context as in English, to refer to a type of infectious organism. It can also refer to a computer virus, again used in the same context as in English.
The virus is very dangerous.
This sentence is a simple statement describing the virus as being dangerous. It follows the standard subject-verb-adjective format.
I caught a virus.
This is an example of the passé composé tense using 'avoir' as the auxiliary verb. The verb 'attraper' means 'to catch' and it's in the past participle form.
The virus is spreading quickly.
This sentence contains the reflexive verb 'se propager' which means 'to spread'. When conjugated with 'le virus' it effectively communicates the virus is spreading itself quickly.