"Virus" is a word in ENGLISH

Contagious or poisonous matter, as of specific ulcers,
the bite of snakes, etc.; -- applied to organic poisons.

Fig.: Any morbid corrupting quality in intellectual or
moral conditions; something that poisons the mind or the soul; as, the
virus of obscene books.

The special contagion, inappreciable to the senses and
acting in exceedingly minute quantities, by which a disease is
introduced into the organism and maintained there.