Prisons
Although individual claims of infestation are insufficient to present a genuine issue of fact, the claim must be assessed holistically.
Harms of infestation present an issue for the finder of fact. (1984 quote.)
Knowledge of conditions can be imputed to incoming warden (caption not changed).
Marcos Gray v. Marcus Hardy
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.