Friday 24 January 2020 ,
Friday 24 January 2020 ,
Latest News
  • It’s victory for humanity: FM about ICJ order
  • ICJ orders Myanmar to protect Rohingya
  • 4 Bangladeshis killed by ‘BSF’ along Naogaon, Jashore borders
  • PM witnesses army’s winter exercise
  • Bangladeshi born Omar Ishrak becomes Intel chairman
  • Bangladesh ranks 146th in corruption index: TIB
  • Coronavirus: All You Need to Know
22 July, 2019 00:00 00 AM

Children over six may be at greater risk of dengue infection

icddr,b
Children over six may be at greater risk of dengue infection

A new study with icddr,b identifies various household and community level risk factors that increase the risk of Dengue fever virus (DENV) infection. Children older than 6 years of age are more likely to be infected by this mosquito-borne pathogen. This may be connected to the fact that they spend more time in crowded places such as schools and parks, notes the study.

At the household level, the presence of ornamental potted plants, potential breeding grounds for mosquitos was found to increase the risk for DENV infection. “Home-based interventions such as removing indoor potted plants and increased bed net use, as well vector control measures in public parks, would reduce exposure to dengue infections among the residents of the city of Dhaka,” says Dr Kishor Kumar Paul, research investigator at icddr,b

and co-author of the study

published in PLoS Neglected Tropical Disease.

Dengue is spread by the mosquitoes Aedes aegypti and Aedes albopictus, two species which can also transmit other mosquito-borne viruses, including Chikungunya. Approximately 500,000 people develop severe dengue fever each year, according to the World Health Organisation (WHO).

“Our study demonstrates that formulation of an active DENV surveillance system is urgently warranted, particularly to estimate the impact of DENV disease burden in Dhaka and other urban areas of the country,” says Dr W Abdullah Brooks, principal investigator of the study and former scientist at icddr,b.

Multiple dengue outbreaks have occurred in Bangladesh since the first major outbreak in 2000. The vast majority (91%) of reported dengue cases between 2000 and 2009 occurred in Dhaka, suggesting that this is a major site for DENV transmission in Bangladesh.

 

High Seroprevalence

The study combines serological surveys of blood samples with participant interviews to determine various sociocultural risk factors that predict DENV infection.

Serological surveys measure the presence of circulating antibodies in blood samples in order to objectively determine whether each participant has been infected with DENV in the past.

The new study found a very high degree of seroprevalence for DENV across Dhaka city, with the highest seroprevalence in the older, more densely populated areas. It is an indicator of significant unreported dengue virus-associated illness.

As dengue incidence in Bangladesh is highly dependent on monsoons, two separate surveys were conducted both pre- and post-monsoon in 2012 to determine the degree of seroconversion, i.e. the number of previously uninfected people who become infected in the course of a single monsoon.

Finally, by correlating findings from participant interviews to incidents of seroconversion, the authors were able to determine household-level and sociocultural risk factors for DENV infection.

There are also many new infections that occur between the pre- and post-monsoon period (although many of these infections are most likely mild or asymptomatic) suggesting that DENV was circulating through the city quite intensely during the study.

Dr Paul acknowledges that the findings were not comparable to other seroprevalence data in the country since it was the first population-based DENV seroprevalence study in Bangladesh. “Future studies are warranted to identify dengue serotypes and strains currently circulating in the city,” he says.

 

Comments

Most Viewed
Digital Edition
More story
Editor Speaks

Editor Speaks

Disease due to infection is the outcome of interaction between micro-organisms or other agents and the defense mechanism of the body. Illnesses that are…
Q&A on infectious diseases

Q&A on infectious diseases

Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi; the diseases can be spread, directly or indirectly,…
Acute Respiratory Infection

Acute Respiratory Infection

What is acute respiratory infection? Acute respiratory infection is an infection that may interfere with normal breathing. It can affect just your upper…
FAQ on streptococcal infections

FAQ on streptococcal infections

Group B streptococcus (group B strep) is a type of bacteria that causes illness in newborn babies, pregnant women, the elderly, and adults with other…
Bacterial and viral infections

Bacterial and viral infections

Bacterial and viral infections have many things in common. Both types of infections are caused by microbes -- bacteria and viruses, respectively -- and…
Could new icddr,b interventions finally achieve “Clean Hands for All”?

Could new icddr,b interventions finally achieve “Clean Hands for All”?

Handwashing is an important part of keeping food safe, preventing diseases, and helping people - especially children - lead healthier lives. While the…
Differences between ulcerative colitis and Crohn's disease

Differences between ulcerative colitis and Crohn's disease

AMBER J. TRESCA The two primary forms of inflammatory bowel disease (IBD)—Crohn's disease and ulcerative colitis—are often lumped together.…
Burnout linked with irregular heartbeat

Burnout linked with irregular heartbeat

Feeling excessively tired, devoid of energy, demoralised, and irritable? You may have burnout, a syndrome associated with a potentially deadly heart rhythm…
Having less sex linked to earlier menopause

Having less sex linked to earlier menopause

Women who engage in sexual activity weekly or monthly have a lower risk of entering menopause early relative to those who report having some form of sex…
Languages affected differently by brain disease

Languages affected differently by brain disease

There are differences in the way English and Italian speakers are affected by dementia-related language problems, a small study suggests. While English…
More studies link vaping to asthma, COPD

More studies link vaping to asthma, COPD

Lung illnesses and deaths from vaping have been grabbing headlines for months, and now two new studies offer fresh evidence pointing to long-term respiratory…
NHS to pioneer cholesterol-busting jab

NHS to pioneer cholesterol-busting jab

JAMES GALLAGHER  A twice-a-year injection that reduces bad cholesterol to protect the heart is to be pioneered by the NHS in England. Already, millions…
FDA approves Numbrino (cocaine hydrochloride) nasal solution for nasal anesthesia

FDA approves Numbrino (cocaine hydrochloride) nasal solution for nasal anesthesia

Lannett Company, Inc. recently announced that the U.S. Food and Drug Administration (FDA) has approved the New Drug Application (NDA), submitted under…

Copyright © All right reserved.

Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Disclaimer & Privacy Policy
....................................................
About Us
....................................................
Contact Us
....................................................
Advertisement
....................................................
Subscription

Powered by : Frog Hosting