New Model Shows How To Eradicate World's Leading Infectious Cause Of...( A new mathematical model based on kn...)

New Model Shows How To Eradicate World's Leading Infectious Cause Of Blindness

A new mathematical model, based on known disease transmission rates, predicts that plans to eliminate the leading cause of preventable blindness cannot succeed unless the worst pockets of infection receive special treatment.

Trachoma, a bacterial eye infection, affects some 150 million people worldwide. Children are particularly vulnerable. Reinfection causes scarring that can lead to blindness, and currently, some six million people have been left sightless from the infection. Arid, rural regions of Africa, the Middle East and parts of Asia are areas of the greatest concentration.

The infection is completely treatable with antibiotics and is the target of a planned World Health Organization (WHO) project, "GET 2020" (Global Elimination of Trachoma by the year 2020).

The plan is to treat infected people with a proven antibiotic called azithromycin, donated by Pfizer Inc. Although WHO has not yet announced its final treatment strategy, plans most often aired involve annual antibiotic treatments for people in the affected regions, along with cleaning water supplies and encouraging improved face washing.

But while annual antibiotic treatment will eliminate the disease in most regions, it will not be sufficient to do so in the areas where trachoma among children is most prevalent, according to computer projections developed by researchers at the University of California San Francisco. They report their findings in the May, 1999 issue of Nature Medicine.

"Our model shows that in areas where the incidence of trachoma is high - where more than half of the kids are infected - the disease will just bounce back after the annual treatment due to reinfection," said Tom Lietman, MD, lead author of the report and assistant professor of ophthalmology at UCSF's Proctor Foundation. Reinfection can lead to blindness.

"These areas of high incidence may make up only about 10 percent of all regions affected by trachoma, but it is in these areas of higher i
'"/>

Contact: Wallace Ravven
wravven@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
26-Apr-1999

Page: 1 2
Related medicine news :

1. Model predicting colorectal cancer screening suggests higher mortality for virtual colonoscopy
2. Model dental school curriculum to address disparities in oral health care
3. Cut Nerve Fibers Are Repaired In An Animal Model of Spinal Cord Injury; May Help Repair Nerve Damage In Humans
4. Rigorous Evaluation Of "Hospitalist" Model Needed To Determine Impact Of This New Medical Specialty, According To UCSF Health Policy Researchers
5. Dynavax Demonstrates Ability Of Immunostimulatory DNA Sequences To Inhibit Symptoms Of Allergic Asthma In Animal Model
6. "TRAMAH" Model Seeks To Improve Emergency Response Paper Uses Maryland As Test Region
7. Randomized Contolled Study Shows Neostigmine Is An Effective Treatment For Acute Colonic Pseudo-Obstruction
8. Research Shows That Noncompliance Is Responsible For Half The Cases Of Nonresponse To Antihypertensive Drug Treatment
9. Anal Cancer Screening For HIV-Positive Gay And Bisexual Men Would Save Lives And Be Cost Effective, New Study Shows
10. Anti-Depressant Drug Shows Promise As Weight-Loss Treatment
11. UCSF Study Shows That An Herbal Therapy Reduces PSA Levels By Half In Men With Advanced Prostate Cancer

Post Your Comments: