Bedbugs. Seriously!

Bedbugs, ancient parasites, have resurged globally, infesting homes and public spaces. Their spread is aided by global travel and resistance to insecticides. Historically, they thrived with urbanization and central heating. Post-WWII insecticides reduced their numbers, but modern bans and resistance have led to a resurgence. Bedbugs now pose a significant challenge, thriving in various environments and resisting control measures.

What historical factors led to the decline of bedbug populations before their recent comeback?

In what ways are bedbugs considered resilient pests according to the text?