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Otitis clinical trials

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NCT ID: NCT00001605 Completed - Otitis Media Clinical Trials

Vaccination for Middle Ear Infection

Start date: May 1997
Phase: Phase 1
Study type: Interventional

Acute otitis media (OM) and OM with effusion are common childhood diseases. Otitis media is a condition marked by inflammation of the middle ear. Otitis media with effusion typically means a long-term (chronic) middle ear inflammation with secretion of fluid into the middle ear due to the blockage of the canal leading from the middle ear to the mouth (eustachian tube). The fluid involved can be sterile (no organisms) or infected with disease causing organisms, such as bacteria or viruses. Nontypeable Haemophilus influenzae (NTHi) is a bacteria that is one of the leading causes of OM and respiratory infections in older people. NTHi carry substances on their surface called antigens. When antigens come into contact with the right kinds of cells in the body, an immune reaction is caused. This reaction is often the symptoms of sickness that a patient feels. One of the major antigens on the surface of NTHi is called lipooligosaccharide (LOS). In order for the body to fight off the attack of antigens, it creates substances called antibodies. Antibodies counter the action of antigens and make the bacteria harmless. However, the immune system must learn how to make the right antibodies for the right antigens. This is done by giving vaccines. Vaccines can contain a small amount or an inactive form of an antigen. Once the immune system recognizes the antigen it can start making antibodies to prevent sickness if it is ever exposed to the antigen again. Presently there are no vaccines for NTHi. One of the reasons why there is no vaccine for NTHi is because the antigen, LOS, is very toxic when given to humans. Researchers have tried to make the antigen less dangerous by removing the toxic effects. It is referred to as dLOS. Unfortunately, dLOS is unable to start antibody production. However, researchers have found that by combining dLOS with another vaccine for tetanus (tetanous toxoid), they were able to stimulate the immune system to create antibodies in laboratory animals. These laboratory animals were protected against NTHi infections and otitis media (OM). Researchers would like to test the effectiveness and safety of dLOS-TT vaccine in adult humans. Their ultimate goal is to develop a vaccine for OM and respiratory infections caused by NTHi.

NCT ID: NCT00000363 Completed - Otitis Media Clinical Trials

Acute Otitis Media: Adjuvant Therapy to Improve Outcome

Start date: n/a
Phase: Phase 3
Study type: Interventional

Acute otitis media is one of the most common diseases of childhood and is one of the major causes of hearing loss in children. Despite the availability of effective antibiotic therapy for otitis media, treatment failures, persistent effusions, and recurrences are common. This Phase III outpatient study aims to test whether adjuvant therapy (an antihistamine or a corticosteroid), in addition to antibiotic therapy, improves the acute and long-term outcomes of patients with acute otitis media. This study is targeted to recruiting 200 infants (age less than one year); patient (and parent) participation is estimated to continue for one year after enrollment.