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How Long Do Side Effects from COVID Vaccine Last?


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The COVID-19 vaccines are generally safe and play a critical role in helping protect you from severe COVID-19 illness, prolonged hospitalization, or dying from COVID. The vaccines developed against the SARS-CoV-2 virus, the scientific name for the coronavirus, don’t exclude all likelihood of getting the disease. Neither does the COVID vaccine cause COVID-19 infection since none of the vaccines have been made using live cells.

What are the side effects of the second COVID vaccine?

Side-effects of COVID-19 vaccine

Side-effects of COVID-19 vaccine

After getting vaccinated, you may experience mild side effects which are nothing to worry about. The development of mild side effects is an indication that your body is building its immunity against COVID-19. The COVID vaccines are being administered in two doses – a first jab and a second booster jab given anywhere between two and eight weeks after receiving your first jab. The reported efficacy of the vaccines is only achieved after receiving the second jab.

Why the COVID Vaccine Causes Side Effects

Typically, vaccines are designed to provide you with immunity against disease to either prevent or reduce the severity of the disease. It is normal to experience side effects that may range from mild to moderate after vaccination depending on the individual.

The COVID vaccine triggers your immune system to mount a response against the coronavirus. Your body may react in different ways including an increase in blood flow to get immune cells to different sites within the body. Another side effect is high body temperature to help in killing the virus.

COVID Vaccine Adminstration Site

The mild to moderate side effects are perfectly normal and may include low-grade fever, muscle aches, fatigue, and mild headaches. You should not be alarmed after getting side effects since they are an indication that your immune system is responding to the vaccine. The response reveals that the vaccine is effectively priming itself to fight the coronavirus when it encounters it. The side effects of the vaccine should disappear within a few days.

It’s important to note that failure to experience the side effects doesn’t mean that the coronavirus vaccine isn’t working. Different people react differently to the COVID vaccine due to the makeup of their bodies. Some people will simply not have any side effects whereas in rare cases a small group of people on the other end of the spectrum will suffer severe side effects.

What are the mild-to-moderate side effects of COVID-19 vaccines?

Just like any other vaccine, the COVID-19 vaccines have side effects that will range from mild to moderate effects. These side effects will go away on their own in a few days.

Coronavirus variants

Coronavirus variants

There is also the possibility of severe and long-lasting side effects after getting the COVID-19 vaccine. However, the COVID-19 vaccines are being continually monitored to detect any adverse reactions within sections of the population. We are already seeing some countries pausing the use of specific vaccines until proven that they are completely safe when administered. Specific vaccines have been reported to cause rare blood clotting events prompting some countries to stop the use of these vaccines.

However, the recorded cases of side effects after getting vaccinated with the COVID vaccines are mild at best and go away within a few days. The most common side effects are soreness at the injection site, headache, muscle pain, fever, chills, fatigue, and diarrhea. The occurrence of the side effects differs from person to person and depending on the type of COVID vaccine.

One less common side effect of the COVID-19 vaccines is that severe allergic reaction also called anaphylaxis. After receiving the vaccine jab, health workers will ask you to stay behind for 15-30 minutes. During this period, you will be observed for immediate adverse reactions. If unexpected reactions happen after vaccination, the local health providers will take over to provide the necessary care. Any side effects that last for more than three days should be reported to your local health provider.

Possible Side Effects After Getting a COVID-19 Vaccine

The human body will need a few weeks to develop immunity against the coronavirus. It is, therefore, plausible to get infected with COVID in the days immediately after vaccination since the body is yet to build adequate immunity.

Overall, the COVID-19 vaccines are safe, and receiving the vaccine will help protect you against severe disease and dying from COVID. National health authorities and the World Health Organization (WHO) have set up surveillance and other measures for close monitoring for any unexpected side effects in their populations following COVID-19 vaccination.

Finally, the COVID vaccine only prevents you from coronavirus. It is important to take care of all other aspects of your health and wellbeing, especially now during the pandemic.

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