Featured Research

from universities, journals, and other organizations

New Vaccine To Be Used For First Time In Polio Outbreak Response

Date:
May 5, 2005
Source:
World Health Organization
Summary:
Eighteen new cases of polio have today been announced in Yemen, bringing the reported total number associated with an outbreak in the country to 22. Yemen had been polio-free since disease surveillance began in 1996 - a genetic investigation is ongoing to determine the precise origin of the outbreak. Experts fear that the number of cases will rise in the immediate future.

Eighteen new cases of polio have today been announced in Yemen, bringing the reported total number associated with an outbreak in the country to 22. Yemen had been polio-free since disease surveillance began in 1996 - a genetic investigation is ongoing to determine the precise origin of the outbreak. Experts fear that the number of cases will rise in the immediate future.

Teams of WHO and Ministry of Health epidemiologists and paediatricians remain on the ground, to investigate and control the outbreak and to intensify the planning for appropriate supplementary immunization activities.

Four cases of polio were confirmed on 20 April in just one governorate in the south-western part of the country, on the Red Sea coast. The latest 18 cases occurred across five governorates throughout Yemen, including in two districts in the country's capital Sanaa and suggesting the virus had spread across the country. Ongoing field investigations have identified additional suspected polio cases across the affected governorates in Yemen. Low immunization rates among Yemen's children may facilitate the spread of the virus.

Experts are now planning an outbreak response, using the recently-developed monovalent oral polio vaccine type 1(mOPV1). This new vaccine enables a precisely tailored immunological response to the type 1 poliovirus that is causing the outbreak. Compared to the commonly-used trivalent OPV, which offers protection against all three types of wild poliovirus, mOPV1 provides a greater immunity to type 1 wild poliovirus with fewer doses. Use of mOPV1 is expected during a nationwide immunization campaign in the second half of May. Yemen had already conducted a mass campaign on 11-14 April, as the country was considered to be at high-risk of polio re-infection from nearby Sudan where an outbreak of polio continues.

Experience in polio eradication demonstrates that outbreaks can be quickly contained with high quality immunization campaigns which reach every child under five years old.

Dedicated donor support and strong partnerships with the private sector have enabled the previous campaign in Yemen as well as swift development of the mOPV1 vaccine. However, a global funding gap of US$ 50 million must urgently be filled by July, to finance continued intensification of immunization campaigns in the second half of the year.

Global eradication efforts have reduced the number of polio cases from 350 000 annually in 1988 to 1267 cases in 2004. Six countries remain polio-endemic, with a further six where polio transmission is re-established. Concern is high that the ongoing outbreak of polio in Africa might lead to re-infection of more countries in the polio-free Horn of Africa and the Middle East. Yemen is the most recent of fifteen polio-free countries that have reported cases of polio since the epidemic began in late 2003.


Story Source:

The above story is based on materials provided by World Health Organization. Note: Materials may be edited for content and length.


Cite This Page:

World Health Organization. "New Vaccine To Be Used For First Time In Polio Outbreak Response." ScienceDaily. ScienceDaily, 5 May 2005. <www.sciencedaily.com/releases/2005/05/050504192328.htm>.
World Health Organization. (2005, May 5). New Vaccine To Be Used For First Time In Polio Outbreak Response. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2005/05/050504192328.htm
World Health Organization. "New Vaccine To Be Used For First Time In Polio Outbreak Response." ScienceDaily. www.sciencedaily.com/releases/2005/05/050504192328.htm (accessed July 29, 2014).

Share This




More Health & Medicine News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Ebola Virus Threatens West Africa

Deadly Ebola Virus Threatens West Africa

AP (July 28, 2014) West African nations and international health organizations are working to contain the largest Ebola outbreak in history. It's one of the deadliest diseases known to man, but the CDC says it's unlikely to spread in the U.S. (July 28) Video provided by AP
Powered by NewsLook.com
$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Two Americans Contract Ebola in Liberia

Two Americans Contract Ebola in Liberia

Reuters - US Online Video (July 28, 2014) Two American aid workers in Liberia test positive for Ebola while working to combat the deadliest outbreak of the virus ever. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins