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Why Side Effects Happen
The vaccine trains your immune system to recognize and fight the virus. As your body builds protection, it releases chemicals that can cause temporary inflammation — which explains symptoms like soreness, fever, or fatigue.
In short, side effects are a normal immune response, not a sign of infection.
Less Common but Important Reactions
- Difficulty breathing
- Swelling of the face or throat
- A fast heartbeat
- Severe or persistent chest pain
- Dizziness or fainting
Healthcare providers typically monitor patients for 15–30 minutes after vaccination to ensure immediate reactions are addressed.
Aftercare Tips to Feel Better
To reduce discomfort after vaccination, experts recommend:
- Moving or gently exercising the arm that received the shot
- Applying a clean, cool compress to the injection site
- Staying hydrated
- Resting if you feel tired
- Wearing loose clothing around the injection area
Over-the-counter pain relievers may help, but health authorities advise not taking them before vaccination unless directed by a healthcare provider.
When Protection Builds
Full protection doesn’t happen immediately. It generally takes:
- About 2 weeks after the final dose for maximum immunity
- Boosters may be recommended over time to maintain protection
Even after vaccination, following public health guidance remains important — especially during periods of high transmission.
Who Should Talk to a Doctor First
While the vaccine is safe for most people, you should consult a healthcare professional if you:
- Have a history of severe allergic reactions
- Are immunocompromised
- Are pregnant or breastfeeding and have concerns
- Have specific medical conditions
A healthcare provider can help weigh benefits and risks based on your individual situation.
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