Why do some people get side effects after taking Covid-19 vaccines

The immune system has two main arms, and the first kicks in as soon as the body detects a foreign intruder. White blood cells swarm to the site, prompting inflammation that’s responsible for chills, soreness, fatigue and other side effects.

This rapid-response step of your immune system tends to wane with age, one reason younger people report side effects more often than older adults. Also, some vaccines simply elicit more reactions than others.

That said, everyone reacts differently. If you didn’t feel anything a day or two after either dose, that doesn’t mean the vaccine isn’t working.

Behind the scenes, the shots also set in motion the second part of your immune system, which will provide the real protection from the virus by producing antibodies

Possible Side Effects After Getting a COVID-19 Vaccine

COVID-19 vaccination will help protect you from getting COVID-19. You may have some side effects, which are normal signs that your body is building protection. These side effects may affect your ability to do daily activities, but they should go away in a few days. Some people have no side effects.

Common Side Effects

On the arm where you got the shot:

• Pain
• Redness
• Swelling

Throughout the rest of your body:

• Tiredness
• Headache
• Muscle pain
• Chills
• Fever
• Nausea

To reduce pain and discomfort where you got the shot

• Apply a clean, cool, wet washcloth over the area.
• Use or exercise your arm.

To reduce discomfort from fever

• Drink plenty of fluids.
• Dress lightly.
• One might face difficulty in carrying out daily activities due to these side effects, but there's no need to panic since they should go away in a few days.

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