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The vaccine approval process is a complex and highly regulated pathway designed to ensure that vaccines are safe, effective, and of high quality before they are made available to the public. Regulatory authorities such as the United States Food and Drug Administration (FDA), European Medicines Agency (EMA), and India’s Central Drugs Standard Control Organization (CDSCO) oversee the process, with the primary goal of protecting public health while enabling timely access to critical vaccines. The approval process can be broadly divided into preclinical evaluation, clinical trials, regulatory submission, and post-marketing surveillance, each stage having specific requirements and regulatory scrutiny. The first stage in vaccine development is the preclinical phase, which involves laboratory and animal studies. During this phase, researchers study the vaccine candidate’s biological properties, mechanism of action, immunogenicity, and potential toxicity. Preclinical studies are essential to identify the initial safety profile, appropriate dosing, and immune responses elicited by the vaccine. Regulatory authorities require detailed documentation of these studies in the form of an Investigational New Drug (IND) application or equivalent, ______ ________ ___ ___ ________ ______ ____ __________ _____.
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