sicken

It hijacks your cells to do this—and that’s how it sickens you, by forcing your cells to make new viruses instead of what they should be doing.

Or because the series of unfortunate events that we call old age tends to find and sicken the elderly?

And, to do Robinson justice, this last thought made his heart sicken and his flesh creep more than all the rest.

His colour sicken'd more and more,He faded into age; And then his enemies beganTo show their deadly rage.

When love begins to sicken and decay / It useth an enforced ceremony.

Invader and victim lie in the same grave, burn in the same heap; they sicken while they work, and the pestilence spreads.

Hev ye ever tried ter raise a young hawk in a bird-cage, an' watched hit sicken an' die?