A scientific report reveals ... why do some people not experience side effects of the vaccine?

The scientific website The Conversation published a report dealing with the side effects of the Corona vaccine, and said that "most vaccines have side effects, and Corona vaccines do not differ from them."

The site, the science concerned with research-based analyzes, says that the symptoms that come after receiving the vaccine in some people are pain in the arm (where the needle is), fatigue, headache, fever, or nausea, "these are just signs that the immune system is working as it should." .

Some ask about the reaction of the immune system when receiving the vaccine, does the lack of side effects mean that the immune system is not strong for protection?

The site confirms that clinical trials of the vaccine conducted by Pfizer showed that 50 percent of the participants did not complain of side effects, and yet 90 percent of the participants developed immunity to the virus.

Scientists note that people over the age of 65 experience fewer side effects from the vaccine.

This could be attributed to a progressive decline in immune activity due to aging.

Although this could also be associated with low levels of antibodies, older people still have immunity to the virus.

Gender may also have an effect on the level of symptoms. In an American study, 79 percent of reports of side effects were from women, and this could be related to testosterone.

Testosterone tends to reduce inflammation and therefore the associated side effects.

Men have more testosterone than women, which may contribute to fewer side effects in men.

People who suffer from chronic diseases or infections, and who take immunosuppressive drugs to control their symptoms, may have fewer side effects, due to weakened immunity.

The experiments concluded that despite the weak immune response in some people, this does not mean that immunity is not present, and the side effects of the vaccine should not be taken as a measure of the effectiveness of the vaccine.

Despite the diverse immune response to vaccines, most people achieve immunity against the Coronavirus upon vaccination, regardless of the presence, absence, or severity of side effects.