Navigation Links
Electronic Mosquito Repellents Fail to Prevent Malaria Transmission

Electronic mosquito repellents don’t prevent bites and therefore don’t prevent disease transmission, according to a new study.//

“EMRs should not be manufactured, advertised or used for mosquito bite and malaria prevention, as they do not do so,” said lead author A. Ali Enayati, Ph.D., lecturer in medical entomology at the Mazandaran University of Medical Sciences in Sari, Iran.

The review appears in the latest issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates medical research. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing medical trials on a topic.

The researcher analyzed 10 studies conducted in North America, Russia and Africa. All were field-based studies — occurring in a natural setting rather than a laboratory.

All studies “found that there was no difference in the number of mosquitoes that landed on the bare body parts of the human subjects with or without an EMR,” Enayati said. “Hence, these devices do not work in repelling mosquitoes. As EMRs do not repel mosquitoes, they would not prevent malaria.”

Malaria, which kills more than a million persons every year, is most deadly among children and is particularly prevalent in sub-Saharan Africa. It is transmitted by female Anopheles mosquitoes infected with the malaria parasite. No vaccine against malaria is available.

EMRs are small, handheld devices that emit a high-frequency buzz almost inaudible to the human ear. Manufacturers claim that the buzz mimics the beating of male mosquito wings. EMRs are used indoors and outdoors and are purported to repel mosquitoes within a range of 2.5 meters — about 8 feet.

Females are supposedly repelled by the sound, since they mate only once in their lives. However, some researchers have reported that female mosquitoes have a very weak se nsitivity for any sound.

The authors say that 30 years of scientific skepticism and a successful prosecution in the 1980s of EMR marketers under the UK Trade Description Act has not affected worldwide marketing of the devices. “This is a concern,” they write, “because it is likely to lead to consumers not using other protective methods that are proven to work.” Such personal protection includes mosquito repellents formulated as pills, ointments, lotions and sprays, as well as insecticide-treated or untreated bed nets.

Study investigators had counted mosquitoes landing on bare body parts — mostly arms, legs and feet — during specified time periods in which an EMR was switched on or off.

There were no significant differences in the landing rates with and without EMR, making the devices ineffective for preventing malaria transmission.

“I agree with the Cochrane report,” said Joel Breman, M.D., a senior scientific advisor at the Fogarty International Center of the National Institutes of Health. “There is no evidence that electronic devices prevent malaria and many other available options should be used. For example, insecticide-soaked bed nets kill female mosquitoes on contact or repel them from the house during the biting hours, from dusk to dawn.”

While also in agreement with the review’s conclusion, Nirbhay Kumar, Ph.D., professor of molecular microbiology and immunology at the Johns Hopkins Bloomberg School of Public Health, added one qualification.

“Seven of 10 studies analyzed focused on non-anopheline mosquitoes and only three included [the type of mosquito that transmits malaria],” Kumar said. “Perhaps a few confirmatory studies focusing in only malaria-endemic areas may either completely support their analysis or provide some hope for malaria control by this method, if at all applicable.”

ource-Newswise
MED/B
'"/>




Related medicine news :

1. Electronic nose by Italian scientists
2. Stem Cells Could Replace Electronic Pacemakers
3. Electronic Skin (E-Skin) To Robots
4. $ 1.7 Million NYSTAR Award for Binghamton University to Flex Electronics Research Muscle.
5. Electronic Device to the Rescue of Women Using Contraceptive Pill
6. Solitons Could Power Molecular Electronics, Artificial Muscles
7. Electronic Patient Record "Serious Threat" to Patient Confidentiality
8. Electronic Medical Record For Every American by 2014
9. HL7 Announces Industry’s First Electronic Health Record System (EHR-S
10. Electronic Nerve Stimulator Enables Walking
11. Deflecting Damage: Flexible Electronics Aid Brain Injury Research
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2016)... ... June 27, 2016 , ... TopConsumerReviews.com recently awarded their highest five-star ... , Millions of individuals in the United States and Canada wear eyeglasses. Once considered ... both correct vision and make a fashion statement. Even celebrities use glasses as a ...
(Date:6/26/2016)... ... June 26, 2016 , ... On June 10-11, 2016, A Forever Recovery, a ... and World’s Longest Breakfast Table in Battle Creek, MI, where the rehabilitation facility is ... to some of the world’s leading providers of cereal and other breakfast foods. Its ...
(Date:6/26/2016)... North Carolina (PRWEB) , ... June 26, 2016 , ... ... release of a new product that was developed to enhance the health of felines. ... for centuries. , The two main herbs in the PawPaws Cat Kidney Support ...
(Date:6/26/2016)... Birmingham, Lake Orion, Clarkston, Michigan (PRWEB) , ... ... ... their direction with respect to fertility once they have been diagnosed with endometriosis. ... for tolerable intercourse but they also require a comprehensive approach that can help ...
(Date:6/25/2016)... ... ... Austin residents seeking Mohs surgery services, can now turn to Dr. Jessica ... Peckham for medical and surgical dermatology. , Dr. Dorsey brings specialization to include Mohs ... Mohs Micrographic Surgery completed by Dr. Dorsey was under the direction of Glenn Goldstein, ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Mass. , June 24, 2016   Pulmatrix, ... pharmaceutical company developing innovative inhaled drugs, announced today that ... Russell Investments reconstituted its comprehensive set of ... "This is an important milestone for Pulmatrix," ... will increase shareholder awareness of our progress in developing ...
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
(Date:6/23/2016)... June 23, 2016 Capricor ... ), a biotechnology company focused on the discovery, ... that patient enrollment in its ongoing randomized HOPE-Duchenne ... exceeded 50% of its 24-patient target. Capricor expects ... third quarter of 2016, and to report top ...
Breaking Medicine Technology: