Bed bugs mostly faded from everyday life in the United States, then returned in the late 1990s and 2000s.
If you are asking when did bed bugs come back, the short answer is that the bed bug resurgence became widely visible in the late 1990s.
Infestations spread quickly in the years that followed.

Travel, pesticide resistance, and a loss of public memory about how bed bugs spread fueled the comeback.
That allowed a small problem to turn into a serious infestation before most people noticed it.
The Return Started In The Late 1990s

People pushed bed bugs close to elimination in the mid-20th century.
Reports of bed bugs began to rise again in the late 1990s.
That shift marked the beginning of the modern bed bug infestation problem in the U.S.
A wave of bed bug infestations spread through homes, hotels, and apartments.
Why Bed Bugs Nearly Disappeared After The DDT Era
After World War II, DDT and other pesticides drove populations of Cimex lectularius to very low levels.
Many people grew up with little or no experience of a bedbug infestation, so the pest dropped out of daily conversation.
The species did not disappear.
It simply became rare enough that a new generation lost the habit of checking for it.
How Reports Shifted From Rare Cases To A Widespread Problem
By the mid-1990s, entomologists and pest professionals already reported a renewed presence of cimex lectularius in developed countries.
Those early reports grew into a steady stream of complaints, especially in dense cities and shared housing.
As townhustle and PestWorld note, the problem expanded from scattered cases into a broader national concern.
People were no longer used to recognizing the signs early, which helped the problem grow.
When Bed Bug Infestations Became A Modern U.S. Concern
In the U.S., the late 1990s marked the turning point.
By the 2000s, bedbug infestations were reported across the country.
Public agencies began treating the issue as a practical household problem.
Why The Comeback Happened So Fast

Bed bugs spread quickly because they found easy ways to move and faced fewer effective barriers.
Once they entered homes again, bed bug control became harder, especially when common sprays failed and people did not spot the first signs.
Travel, Air Travel, And Luggage As Main Spread Routes
Modern travel, especially air travel, helped bed bugs move between cities, states, and countries.
They also hitchhike in luggage, clothing, and used furniture.
A single bug can leave one infested room and seed another.
Constant movement helped the return spread quickly.
Pesticide Resistance And The Limits Of Pyrethroids
Many bed bug populations developed pesticide resistance to commonly used products, especially pyrethroids.
Sprays that once worked well no longer delivered the same results.
Modern pest control struggled because chemical-only approaches could miss hidden bugs and allow survivors to reproduce.
Infestations became harder to eliminate.
Urban Density, Public Awareness, And Urban Entomology
Urban entomology explains why dense neighborhoods saw so many cases.
Apartments, dorms, hotels, and transit-heavy areas gave bed bugs more chances to move.
Public awareness lagged behind the resurgence.
When people did not expect bed bugs, they inspected less often and reported later.
How To Spot And Respond To A Problem Early

Early action gives you the best chance of stopping bed bugs before they spread.
Look for bite patterns, inspect hiding places carefully, and use methods that target both visible bugs and the ones tucked out of sight.
Common Signs Like Bed Bug Bites, Itching, And Allergic Reaction
Bed bug bites often appear as itchy red welts, sometimes in clusters or lines.
You may also notice itching, sleep trouble, or, in some cases, an allergic reaction.
Bites alone do not confirm a problem, but they are a useful warning sign.
Pair them with other clues before you assume the issue is something else.
Where To Look During Inspection
Start a careful inspection with mattress seams, cracks and crevices, bed frames, and the headboard.
You may also find dark spots, shed skins, eggs, or live bed bugs in nearby furniture.
Check the area around the bed too, since bed bugs often spread beyond the mattress.
A flashlight and a slow, methodical search make it easier to spot the earliest signs.
What Works For Control And Prevention
Vacuuming can remove some bugs and eggs from surfaces. Diatomaceous earth may help in targeted applications when you use it correctly.
For larger infestations, professionals may need to fumigate or use other treatments.
Strong prevention tips include checking hotel beds and keeping luggage off floors. Inspect used furniture before bringing it home.