While COVID-19 vaccines can protect people from severe illness and death, the protection begins to wane after initial vaccine doses, making booster shots necessary for maintaining immunity. However, it is also known to have some symptom-like side effects - mostly ranging from minor to moderate. Some people have side effects from the vaccine, which are normal signs that their body is building protection. These side effects may affect their ability to do daily activities, but they should go away in a few days. Some people have no side effects, and allergic reactions are rare.

Dec 31: Pfizer Inc (PFE.N) and BioNTech SE's COVID-19 vaccine caused mostly mild side effects in children aged 5 to 11 years, according to data published by the U.S. Centers for Disease Control and Prevention on Thursday.

August 12: Three new conditions reported by a small number of people after vaccination with COVID-19 shots from Pfizer (PFE.N) and Moderna (MRNA.O) are being studied to assess if they may be possible side-effects, Europe's drugs regulator said on Wednesday.

July 13: Johnson & Johnson (JNJ.N) said on Monday it was in discussions with the U.S. Food and Drug Administration about rare cases of a neurological disorder, Guillain-Barré syndrome, that have been reported following vaccination with the Janssen COVID-19 vaccine.

USA, June 11: Why do some people get side effects after COVID-19 vaccines?

One in 10 persons receiving the shots experienced slight side effects

MUMBAI, Dec 18: Many Indians appear hesitant to get vaccinated for COVID-19 as infections have fallen sharply since a mid-September peak and some people are worried about possible side-effects here, according to a survey of 18,000 people released on Thursday.