“…13 Several studies from various other areas of the world reported fewer side effects after administrating the first or second dose, such as pain at the site of injection, swelling, tenderness, redness, warmth, itch, and swollen armpit glands, headache, fever, fatigue, night sweats, chills and shivering, joint pain, muscle pain, nausea, vomiting, and loss of appetite. [14][15][16][17][18][19] Despite the reality that the clinical studies assured the vaccine was safe and effective, it had limitations, such as a few participants recruited in the clinical studies and a healthier than real-world sample. This may neglect some less frequent deleterious effects that may happen.…”