Why is trachoma considered preventable




















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The Government of South Australia may revise this disclaimer at any time by updating this posting. Users are advised to confirm the application or payment by other means. Do you have an emergency? Close overlay Button to close overlay. Trachoma - including symptoms, treatment and prevention On this page Trachoma is a preventable disease of the eyes caused by infection with the bacteria Chlamydia trachomatis different from the sexually transmitted form of this germ.

How trachoma is spread Trachoma occurs in areas with overcrowded housing where personal and community hygiene are difficult to maintain. Signs and symptoms of trachoma Active trachoma in children often causes no symptoms. Incubation period time between becoming infected and developing symptoms Between 5 to 10 days, but most episodes of infection are reinfections and usually occur in children who already have the disease.

Infectious period time during which an infected person can infect others Between 2 to 3 months. Diagnosis of trachoma The diagnosis is made by qualified primary health care staff Aboriginal health workers, nurses and doctors taking a history and examining the eye.

A swab of the eye may be used to help the diagnosis but is not routinely required Treatment for trachoma A single dose of an antibiotic azithromycin is the recommended treatment for all people with active trachoma.

This disease can be prevented through access to clean water and proper sanitation. Facial hygiene that does not remove eye secretions contaminated with the bacteria, as well as the shared use of towels by children, increase the persistence of the infection in a community.

Repeated infection with Chlamydia trachomatis during many years produces scars in the internal part of the upper eyelid, which causes the eyelashes to go inwards and scratch the eyeball. The scars in the eyelid also affect the lacrimal secretion and produces dryness in the eye. These conditions increase the risk of ulcerations and scars in the cornea. The corneal scarring deteriorates the vision.

If it is not treated, this condition damages corneal opacity irreversibly and lead to blindness. The active trachoma sequelae appear in the adult age and in medium age people. It mainly affects the most vulnerable people such as women and children.

As complication of trachoma, adult women have a greater risk than adult men to develop blindness, explained by the fact that women tend to devote a greater time with young children in close contact, whom are the principal reservoir of the infection. It is estimated that in the world, by March , The estimated total global burden of trachomatous trichiasis in is 2. In the American Region, there exists evidence of trachoma in four countries and it is estimated that 5 million people live in areas warranting interventions for trachoma elimination.

By , Colombia, Brazil, Guatemala, and Peru had evidence of trachoma as a public health problem. Mexico reached the elimination goal in Some other countries started trachoma rapid assessments in as part of the initiative to compile evidence for a future process of validation of the elimination in the Region of the Americas.

This consists of:. Principal risk factors for the occurrence of the disease are related to lack of access to water, the presence of flies, poor hygienic conditions and overcrowding. The prolonged exposure to infections from infancy and during youth seems to be necessary for producing complications that occur later in the course of life.

A single episode of acute conjunctivitis by Chlamydia is not regarded as a threat to vision since virtually there is no risk of prolonged inflammation or complications for blindness. As a result, the principal interventions should aim at preventing the infection by trachoma including improvement of sanitation, reduction of fly breeding sites and to increase the activities of facial hygiene with clean water for children at risk of the disease.

Separation of animal quarters from human living space, as well as safe handling of food and drinking water, are also important environmental measures that affected communities can take within a trachoma control program.

Section Navigation. Facebook Twitter LinkedIn Syndicate. Hygiene-related Diseases Minus Related Pages. For more information on trachoma, visit: CDC. Trachoma External WHO. Global data on visual impairment in the year External Bull World Health Organ. Trachoma and poverty: unnecessary blindness further disadvantages the poorest people in the poorest countries. External Clin Exp Optom. Alliance for the Global Elimination of Blinding Trachoma by External Mariotti SP, Pruss A.

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