27/03/2018
BED BUGS! BED BUGS! BED BUGS!!!!!
THE UNTOLD STORY ABOUT BED BUGS.
INTRODUCTION
BEDBUG OVERVIEW
Bedbugs are small insects that can infest homes and other structures. There are several species of bedbugs, one of which (Cimex lectularius) is responsible for the majority of infestations in temperate (moderate) climates; another species can be found in more tropical areas. There are also related species known as "bat bugs" and "bird bugs", which infest the habitats of those animals. A microscopic examination may be necessary to distinguish bedbugs from other species.
How to determine if bedbugs are present, how to treat bedbug bites, and how to eliminate a bedbug infestation.
WHERE ARE BEDBUGS FOUND?
Human bedbugs are found around the world and can infest any structure or site where people may rest. Bedbugs tend to be more common in apartment buildings, other multi-family facilities (eg, homeless shelters), and hotels. Historically, they have also been found in public transportation systems and entertainment venues.
Bedbugs from tropical areas can be transported to non-tropical locations by international travelers, who unknowingly carry the insects on their clothing or luggage. If bedbugs are seen during travel, clothing and luggage should be inspected and cleaned before re-entering one's own home. Washing clothing and then drying it in an electric clothes dryer on the hot setting is adequate to kill bedbugs.
Bedbugs feed on the blood of warm-blooded animals, including humans; they are attracted by warmth and carbon dioxide, and tend to bite when a person is asleep or still for a period of time. They favor cracks and crevices in mattresses, cushions, bed frames, in the folds of curtains, behind loose wallpaper or baseboards, and in clothing or other items on the floor. During a heavy infestation, bedbugs may spread to other items in the room, as well as to adjacent rooms.
The females also lay eggs in these locations, which hatch after four to 10 days. Because bedbugs typically hide during the day, they are often not seen or suspected until bites to the skin are observed.
BEDBUG APPEARANCE
Bedbugs are small and wingless (non-flying), with flat oval-shaped bodies and six legs. They are reddish-brown in color, and may appear redder after feeding on blood. Adult bedbugs reach about 0.25 inches (5 to 7 mm) in length, and the body elongates and widens after a meal.
As bedbugs molt (shed their skin) several times throughout their lifetime, cast-off skins may occasionally be visible at the site of a previous or current infestation.
REACTION TO BEDBUG BITES
It takes five to 10 minutes for a bedbug to complete a "blood meal", or feeding. Bedbugs often inflict a series of bites in a row, and typically target exposed areas of skin (eg, face, neck, arms, hands). The bite itself is generally painless, and may not be noticed until the person awakens or even a day or two later.
Reactions to bedbug bites vary; some people have few or no symptoms, while others experience a more severe reaction. Typically, bedbug bites appear as small, red and swollen areas on the skin, often with a point or dot visible in the center. The area is usually itchy, and may resemble urticaria (hives), a common skin reaction that is often triggered by contact with an allergen.
Bedbug bites usually take three to six weeks to heal, although new bites are likely to accumulate even as the older ones disappear as long as the infestation is still present. Bites may become infected, particularly if the person scratches at and further irritates the skin.
Psychosocial aspects — People affected by bedbugs may experience significant levels of stress and anxiety as a result of concerns about spreading the infestation. However, with the proper measures, bedbugs can be eliminated safely and successfully. Feelings of panic, depression, or extreme anxiety or despair should be discussed with a healthcare provider.
DO I HAVE BEDBUGS?
Bedbug bites — Bedbug bites can be difficult to distinguish from other insect bites; however, several clues can suggest the presence of bedbugs. The discovery of red, itchy bites upon awakening (see 'Reaction to bedbug bites' above), particularly if they form a line or row on the skin, should arouse suspicion.
Other conditions that may produce symptoms similar to bedbug bites include:
• Scabies — A mite infestation which causes intense itching, scabies also causes red lesions; however, unlike bedbug bites, they are usually not limited to exposed skin, and are sometimes accompanied by signs of a burrow (small line in the skin).
• Insect bites — Bites from fleas, mites, and other small bugs or insects can cause redness, swelling, and itching of the skin.
• Other skin disorders — Conditions such as dermatitis herpetiformis, a skin eruption caused by an allergy to gluten (a protein found in wheat), can also resemble the reactions caused by bed bug bites. Other allergies, aggressive washing, and use of some cleaning products can also cause skin irritation.
Signs of infestation — Minor bedbug infestations are often difficult to detect, as the bugs themselves are rarely seen due to their small size and tendency to hide in cracks and crevices during the day. Small reddish-brown specks of dung found on linens, mattresses, or walls surrounding the bed may suggest the presence of bed bugs.
Severe or widespread infestations can cause a coriander-like odor that may be recognizable to those familiar with it; however, this is not usually helpful when trying to diagnose bedbug bites. The only way to definitively identify a bedbug infestation is to collect a specimen (bedbug) and send it to an expert for evaluation and identification. An extension office or entomology department, other options include contacting the local health department or a pest control service. A bedbug specimen may be stored in a plastic pill bottle, zipper top plastic bag, or taped to a piece of white paper.
CAN BEDBUGS CARRY DISEASE?
In general, bedbugs are not known to spread pathogens (germs) that can cause disease in humans. Further research is needed to fully understand the possible connections between bedbugs and other diseases.
Prevention and Control. Fumigation should be conducted after every one (1 week) because they reproduce after 10 days, to be able to kill both adults and young ones immediately after hatching.