What is the impact of COVID-19 Vaccines on Body

the COVID-19 vaccines, so that the pandemic will be over, and we can get back to normal. 

 

your body doesn’t know how to fight it off. 

 

your immune system to recognize the virus and be ready to attack. But as we all have different immune systems, we respond differently to the vaccine and the virus. has nothing to do with the effectiveness of the vaccine. 

or mRNA vaccines. Once it enters your body, the mRNA vaccine instructs your cells to create a spike protein. This simulates part of the SARS-CoV-2 viral structure and tricks your body into believing that it's been infected. The spike proteins will then  Your immune cells will detect these proteins that don't belong and begin making antibodies. If you happen to catch the virus in the future, these antibodies will attach to the spike proteins on both your infected cells and the coronavirus. This will mark them for immediate termination by your immune cells. To be clear, the mRNA does not change your DNA in any way.  

your body destroys the mRNA. Five minutes after your vaccine shot, you'll feel some soreness in your arm. To be safe, the Centers for Disease Control recommends you stay at the vaccination site for at least 15 minutes in case of a severe reaction. While it's rare, you could have anaphylaxis, which is an immediate allergic response. It causes a series of symptoms such as hives or swelling. Thankfully, trained healthcare personnel will be available at every vaccination site to treat you immediately with epinephrine. And according to the CDC, you have a greater chance of being struck by lighting, around one in 500,000, than having an allergic reaction. Four hours after your vaccine, you could feel nothing at all. But you could also get a slight headache or a low-grade fever and feel tired. This is perfectly normal and is a sign that your immune system has kicked into action. 

you may experience mild symptoms as your body acclimatizes to the vaccine. You might feel tired and feverish. Be sure to get some rest and take the day off work if you need to. After about 48 hours, you should start to feel normal again. 

Okay, if you got the Pfizer or Moderna vaccine, you’d need to get your second booster shot three to four weeks after the first dose. Your immune system would be stronger than the first time. But let’s see how it goes next. After your second dose, you might feel crummy again. You could feel tired feverish, and you might get the chills. These reactions are more common after the second dose of the vaccine. But they’re mainly mild to moderate and usually go away in a day or two. And two weeks after your second shot, you’d be fully vaccinated against the COVID-19 virus. So far, the Pfizer-BioNTech vaccine has been 95% effective at preventing COVID-19 illness. In either case, the vaccine can prevent hospitalization and death in people who have gotten sick. So getting a vaccine is your safest path to protect yourself, your family and your community against this virus. It could also help reach herd immunity by having vaccinated people act as a barrier between non-vaccinated people and those who have been infected. 
Good news about the success of the RNA vaccines that have been developed and used so successfully in the response to the COVID pandemic is that those vaccines are relatively easy to change. But creating new vaccines still has its challenges. So one of the difficulties is just that you're always to some extent playing catch up and that we cannot predict which variants will arise. So we can't make a vaccine for a variant that hasn't happened yet. So what we have to do is use all the tools that we have vaccination, distancing methods, masking, other measures that, individually, they may not be 100% effective. But if we use them all together, we can effectively interrupt transmission of the virus in communities.