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Genrally how many phases are required …

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Genrally how many phases are required toake vaccine of any disease

    • Posted by Anand Joshi 5 years, 2 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Sneha Ramparia 5 years, 2 months ago

    Clinical development is a three-phase process. During Phase I, small groups of people receive the trial vaccine. In Phase II, the clinical study is expanded and vaccine is given to people who have characteristics (such as age and physical health) similar to those for whom the new vaccine is intended. In Phase III, the vaccine is given to thousands of people and tested for efficacy and safety. Many vaccines undergo Phase IV formal, ongoing studies after the vaccine is approved and licensed. So IV

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