The final stage of clinical trials of the Covid-19 vaccines has started. The patients going through the clinical trials of the vaccine reported the symptoms like high fever, body aches, headaches and exhaustion. The people who are going through the final stage trails of Moderna and Pfizer’s coronavirus vaccine reported these symptoms. However, the symptoms reported were at times intense or uncomfortable, but then went away after some time. At present 41 vaccines are on human trails but the four are in phase 3 namely Moderna, Pfizer, AstraZeneca and Johnson & Johnson. The health officials expect at least one vaccine to be out by the end of the year.
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