How are vaccines tested for safety?
Vaccines undergo rigorous testing through multiple phases, including preclinical studies and clinical trials.
What are the phases of clinical trials?
Clinical trials typically have three phases: Phase 1 tests safety, Phase 2 assesses efficacy, and Phase 3 confirms effectiveness.
How long does the testing process take?
The testing process can take several years, but it varies depending on the vaccine and the urgency of the health need.
What happens if a vaccine is found to be unsafe?
If a vaccine is found to be unsafe, it can be withdrawn from the market, and further studies may be conducted.
Are there any side effects from vaccines?
Yes, vaccines can have side effects, but most are mild and temporary, such as soreness at the injection site.
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