Write an essay on: 'Vaccination -The only Solution # India fights back the biggest disaster of the century.' in 150-200 words
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Answer: Process of vaccine development usually needs a few years or even decades. Once a promising candidate vaccine is identified in research, it will firstly undergo scrupulous laboratory testing and preclinical studies, before the manufacture can apply for clinical trials:[1]
The clinical trials are bound by strict regulations and take place across three phases:
During Phase I, small groups (approximately 20-50 people) receive the vaccine. This phase will assess the safety, side effects, appropriate dosage, method of administration and composition of the vaccine.
If it is successful, it will proceed to Phase II. At this stage, the vaccine is usually given to several hundred people. This group will have the same characteristics (e.g. age, sex) as the people for whom the vaccine is intended to be given.
In Phase III, the vaccine is usually given to thousands of people to help ensure it is safe and effective for broader use.[2]
The results of all these studies will be rigorously assessed when regulators decide whether to approve a vaccine. Once a vaccine is approved for use, the vaccine must be continuously monitored to ensure the safety for the vaccinated peoples.
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