|Origin:||, past participle of inficere 'to dip in, stain'|
to give someone a disease:
People with the virus may feel perfectly well, but they can still infect others.
the number of people infected with HIV
2MI [usually passive]
to make something contain something harmful that gives people a disease
Eggs known to be infected with salmonella were allowed to go on sale.
if a feeling or interest that you have infects other people, it makes them begin to feel the same way or have the same interest:
Lucy's enthusiasm soon infected the rest of the class.
if a virus infects your computer or disks, it changes or destroys the information in them