It’s well known that mosquitoes are carriers and transmitters of some of the most dreaded diseases like Malaria, Dongue fever, west nile fever etc.
Ticks, Lice and Fleas cause Encephalitis, Lyme Disease, Typhus fever, Plague
Flies carry all sorts of diseases including Sleeping sickness, Cholera etc.
Cockroaches are filthy and can survive in conditions that are unfit for most insects. However, they also infest homes. Keeping your home clean of waste and rotting food is one sure way to reduce bug infestation like cockroaches, flies etc.
Recently there has been a raise in the bed bug infestation in the US. This has almost reached epidemic proportion. It’s been believed that bed bugs do not carry any diseases. This sounded too good to be true. There is some evidence emerging that Bed Bugs may be carriers of the dreaded MRSA virus. It’s too early to conclude that bed bugs are actually transmitting the disease but it definitely helps to be vigilant.
Information about an individual hospital-based case indicates that these parasites were found to carry MRSA was reported in the June 2011 issue of Emerging Infectious Diseases, a U.S. Centers for Disease Control and Prevention public health journal. MRSA (Methicillin-resistant Staphylococcus aureus) is often picked up in hospitals and is called a "super bug" because it is resistant to antibiotics and can sometimes be deadly.
According to Atlanta, Ga. based entomologist Paul Bello, "While there is no evidence that the bed bugs have actually spread the infection at this point, it is still cause for concern, considering the potential that they might.
"If they are responsible for transporting MRSA," Bello added, "this would be a critical finding since bed bugs, by their parasitic nature, are renowned for their ability to travel from one place to another in search of warm-blooded hosts. As a result, the risk for spreading the infection could become significant. This underscores the importance of an early detection program as a critical part of any bed bug management program that should be undertaken at facilities that are at risk of bed bug infestation."
Information on how to detect bed bugs and what to do etc. are available on web. Orkin has good info on this. Some useful hints on how to prevent bed bugs in your home in this article "Bedbugs—What You Want to Know: How to Prevent and Detect Bedbugs (Bed Bugs) | Suite101.com"
You unknowingly bring bedbugs into your home after travel, mostly. (Less often, they ride in on antiques or used clothing.)
Look for bedbug infestation in hotel rooms where you stay—it happens even in upscale locations. If you find it, ask for another room on the other side of the hotel. Keep your suitcase off the floor if it’s open.
After travel, unpack your suitcase in the garage or other place where hitchhiking bedbugs will not find refuge. Remove clothing immediately, put in plastic bags, wash and dry in high temperatures.
You can encase your mattress and box springs in plastic covers, as is often done for asthma sufferers. This will kill trapped bedbugs within and prevent others from taking up homes there.