Tropical medicine study finds most rapid way to detect dengue

University of Hawaii Mānoa scientists have found that a commercially available, FDA-approved dengue detection kit bests the former "gold standard" test by producing results in under five hours.

A study conducted at the John A. Burns School of Medicine (JABSOM) sought to evaluate the use of the commercially available, Food and Drug Administration (FDA) approved InBios Dengue virus IgM ELISA kit for rapid diagnosis of infection. This kit detects anti-dengue virus IgM antibodies, which are produced within three to five days after the onset of .

Dengue virus clinical manifestations vary from asymptomatic infection, mild fever to a severe disease characterized by hemorrhage and shock. Dengue virus outbreaks occurred in Hawai`i in 2001 and 2011 with 153 and four dengue cases, respectively.

Rapid diagnosis of dengue virus infection is critical for effective patient management, thus can prevent the severe dengue disease. In addition, it also helps to prevent the spread of dengue , which can occur after the bite of dengue-virus infected mosquitoes.

In the study, published in the Journal of Clinical Microbiology, JABSOM's Department of Tropical Medicine, Medical Microbiology and Pharmacology tested 79 well characterized clinical serum samples collected from Hawai`i, Vietnam, Niue, Singapore and American Samoa, where dengue virus outbreaks occurred in the past, using InBios DENV IgM ELISA kit and results were compared to that of "gold standard' DENV IgM antibody capture ELISA (MAC-ELISA). The agreement, sensitivity, and specificity of the InBios assay were 94, 92 and 94% respectively. The study found that InBios' DENV Detect IgM Capture ELISA is advantageous compared to the in-house MAC-ELISA, as the results can be obtained in less than five hours, whereas the in-house MAC-ELISA requires 2 to 3 days. We conclude that InBios DENV IgM Capture ELISA can be effectively used for rapid diagnosis of acute or recent DENV infection.

This study was supported in part by grants P20GM103516, U01AI078213 and U54MD007584 from the National Institutes of Health, grant W81XWH0720073 from the Department of Defense and by institutional funds.

About Dengue:

Dengue is a significant human pathogen of global importance. Today about 2.5 billion people, or 40% of the world's population, live in areas where there is a risk of dengue transmission. Dengue is endemic in at least 100 countries in Asia, the Pacific, the Americas, Africa and the Caribbean. Recent reports indicate that there are about 350 million people infected with the dengue virus annually worldwide, triple the World Health Organization (WHO) estimates of 50 to 100 million annual infections, mostly among children. Recently there have been reported outbreaks in Kenya (May 2013) and Angola (June 2013). Although most of the reported cases in the United States are acquired by travelers or immigrants, autochthonous fever outbreaks have occurred in Brownsville, TX (2005), southern Florida (2009-2011) and Hawai`i (2011).

add to favorites email to friend print save as pdf

Related Stories

Costa Rica issues health alert over dengue

Jul 03, 2013

Costa Rica on Tuesday declared a health alert due to a dengue fever outbreak which has claimed three lives and infected about 12,000 people so far this year, authorities said.

Recommended for you

Evidence-based recs issued for systemic care in psoriasis

5 hours ago

(HealthDay)—For appropriately selected patients with psoriasis, combining biologics with other systemic treatments, including phototherapy, oral medications, or other biologic, may result in greater efficacy ...

Bacteria in caramel apples kills at least four in US

5 hours ago

A listeria outbreak believed to originate from commercially packaged caramel apples has killed at least four people in the United States and sickened 28 people since November, officials said Friday.

Steroid-based treatment may answer needs of pediatric EoE patients

5 hours ago

A new formulation of oral budesonide suspension, a steroid-based treatment, is safe and effective in treating pediatric patients with eosinophilic esophagitis (EoE), according to a new study in Clinical Gastroenterology and Hepatology, the official clinical practice journal ...

Discovery of genes that predispose a severe form of COPD

8 hours ago

A study by Ramcés Falfán-Valencia, researcher at the National Institute of Respiratory Diseases (INER), found that the mestizo Mexican population has a number of variations in certain genes that predispose ...

On the environmental trail of food pathogens

9 hours ago

Tracking one of the deadliest food contamination organisms through produce farms and natural environments alike, Cornell microbiologists are showing how to use big datasets to predict where the next outbreak could start.

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.