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To compare the safety and clinical efficacy (death, overall hospitalization, hospitalization for influenza or pneumonia) of ID QIV delivered via an intradermal device with imiquimod cream pretreatment with conventional intramuscular (IM) standard dose QIV and IM high-dose TIV
This is a prospective; double-blind randomized controlled study performed in the HKWC. Recruited subjects include elderly subjects ≥65 years and adult subjects with chronic illness. Eligible subjects will be randomly allocated (3:3:2) into one of the three groups in the first year. Group IQ: topical 5% 250mg imiquimod ointment followed by intradermal QIV, Group IM: topical aqueous-cream followed by IM QIV and Group HD: topical aqueous-cream followed by intramuscular high-dose TIV. Hemagglutination inhibition and neutralization antibody titres will be assayed. We plan to recruit 4000 subjects, 1500 subjects in each of the IQ and IM group (500 subjects in each subgroup with 3 subgroups) and 1000 subjects for the HD group (500 subjects in each subgroup with 2 subgroups).
In the following year, the IQ and IM groups will be further randomized equally into three subgroups: IQ1, IQ2 and IQ3; IM1, IM2 and IM3; and two subgroups for HD group: HD1 and HD2. Subjects randomized to IQ1, IM1 will receive the QIV with the same topical treatment, delivery mode and vaccine as the first year and HD1 will receive the TIV with the same topical treatment, delivery mode and vaccine as the first year. Subgroup IQ2 and IM2 will be vaccinated as follow: IQ2 will receive topical aqueous-cream followed by IM QIV, IM2 will receive topical imiquimod ointment followed by ID QIV. Subgroup IQ3, IM3, HD2 will receive normal saline as the vaccine for that year, but delivered by the same mode and topical treatment. In the third year, subgroups IQ1, IQ2, IM1, IM2 and HD1 will receive the same topical treatment, delivery mode and vaccine as the second year. Subgroup IQ3, IM3 and HD2 will receive the same topical treatment, delivery mode and vaccine as the first year.
Vaxigrip tetra, Fluzone high-dose, Aldara 5% Topical Cream, Aqueous cream BP
University of Hong Kong, Queen Mary Hospital
The University of Hong Kong
Published on BioPortfolio: 2019-11-03T15:10:57-0500
Phase I randomized, double-blind, placebo-controlled trial in 50 males and non-pregnant females, 18 to 49 years old, who are in good health and meet all eligibility criteria. This clinical...
At the end of the study, safety and efficacy outcome measures will be compared to determine a) if dosing with Generic Imiquimod cream, 5% is therapeutically equivalent to the currently mar...
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The primary objective is to determine the effects of Aldara on the cosmetic outcome of laser treatment of vascular malformations.
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The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.
A frozen dairy food made from cream or butterfat, milk, sugar, and flavorings. Frozen custard and French-type ice creams also contain eggs.
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The specific failure of a normally responsive individual to make an immune response to a known antigen. It results from previous contact with the antigen by an immunologically immature individual (fetus or neonate) or by an adult exposed to extreme high-dose or low-dose antigen, or by exposure to radiation, antimetabolites, antilymphocytic serum, etc.
Medicated dosage forms for topical application in the vagina. A cream is a semisolid emulsion containing suspended or dissolved medication; a foam is a dispersion of a gas in a medicated liquid resulting in a light, frothy mass; a jelly is a colloidal semisolid mass of a water soluble medicated material, usually translucent.
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An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (such as bacteria, fungi, parasites, and viruses) and chemicals. Antibodies may be produc...