Can you still get sick after a vaccine [Safety from covid19]

Can you still get sick after a vaccine
Can you still get sick after a vaccine:

We discuss can you still get sick after a vaccine, can you be a carrier of covid after vaccine, how long covid 19 vaccine lasts in body and chances of catching Covid again among other topics.

Can you still get sick after a vaccine:

It is possible that someone who just got vaccinated could get infected and catch the coronavirus disease.

When we talk about "getting sick after vaccination" we will discuss both kind of sickness i.e

1) Getting Coronavirus after vaccination.

2) Side effect sickness after getting the vaccine.

The simplest explanation would be that after vaccination, we often get sick because the body takes about two weeks to build up immunity and a person can fall ill to covid-19 if the vaccine has not yet provided adequate immunity.

So the first step to keep you from contracting COVID-19 is that you should be vaccinated against it. In some cases.

Why People who already had COVID-19 should still get vaccinated:

There is no doubt that vaccines offer critical protection even against variants which are more contagious such as Delta variant. Researchers have found that a single dose of mRNA vaccines from Moderna or Pfizer-BioNTech boosts immunity and that vaccinations protect us against a deadly virus with more robust antibodies, so it is recommended that anyone who has not yet been vaccinated get vaccinated as soon as possible.

Dr Greaney led a team of Fred Hutchinson researchers that published a study suggesting that vaccines improve people's immune system, so if you've had covid or not the first step is getting vaccinated as it boost your defence against the coronavirus.

​​Should you get the COVID-19 vaccine if you currently have covid-19:

COVID-19 vaccines should not be administered to those experiencing COVID-19 symptoms and are currently ill.

In order to receive the vaccine, you must wait 28 days from the date your COVID-19 test came back positive or 28 days after your symptoms began.  Having received a fully licensed vaccine, you are very much lowered (not eliminated) to contract Covid again if you become ill, hospitalized or die after fully vaccinating.

Chances of catching Covid again:

People who had been fully vaccinated and contracted Covid-19 have been the focus of much recent discussion about so-called breakthrough Covid cases as more and more cases of the highly contagious delta variant have been reported as it surges in the United States.

First, we must remember that vaccinations aren't some sort of magic barrier that can't be penetrated, hence as a result of vaccines the body will be able to defend itself against Covid-19, but no vaccine is 100% effective. Additionally, having already contracted Covid does not mean you will be immune to it in the future and that is exactly why those who have already been ill with coronavirus are encouraged to get vaccinated since vaccines boost your immunity even more.

Can you still get sick after a vaccine
Can you still get sick after a vaccine:

In most parts of the country, despite a relatively flat vaccination campaign and a return to more normal conditions, cases of the highly contagious delta variant are rising and the increase includes cases among those who have already been vaccinated but the good news is you have a pretty slim chance of contracting Covid-19 if you've been vaccinated and have had Covid-19.

In the current situation, more than 90% of people infected with the virus are unvaccinated proving that vaccines are clearly a great source of protection, however the virus is still infecting fully vaccinated people. Here's why:

  • Even people who have been fully vaccinated get infected with Covid, though at a much lower rate than those who are not vaccinated.
  • Even though there is no 100% effective Covid vaccine, vaccination greatly reduces the risk of hospitalisation and death.
  • In spite of variations, the effectiveness of the Covid vaccines remains a challenge, and booster shots are in pipeline and will finally be administered.

How long do the COVID-19 vaccines last in our bodies: 

That remains to be seen. Currently, the Center for Disease Control and Prevention (CDC) do not know how long people will be protected. Vaccines affect each of us differently, just as we all tolerate them differently. As a result, the scientific community continues to study natural immunity and vaccine-induced immunity with respect to COVID-19. 

Vaccinations can protect us for a long time after they have been fully administered but for how long is still unknown how the CDC and experts will answer this question and we will be updated once they have a more definitive answer to it. In the end, the vaccine remains the safer choice to prevent serious illness in your family, and also for the benefit of our communities.

Side effects of the coronavirus vaccines:

The vaccine instructs your immune system how to protect yourself against the disease but the vaccine can also cause side effects.

The majority of these are mild and short-lived and not everyone gets these side effects from the vaccines.

The following are possible causes of vaccine side effects:

  • An arm that feels heavy, painful, and tender where the injection was administered
  • Muscle ache or headache
  • Anxiety about joints
  • Feeling chilling
  • You may feel nauseated or vomit
  • Experiencing fatigue
  • Having a fever (temperature of 37.8°C or higher).

It is possible to have flu-like symptoms with episodes of shaking and shivering.

There are few serious adverse effects associated with these side effects, which resolve within a few days rather than developing coronavirus.

Taking paracetamol and resting will help ease discomfort as please follow the directions on the label when taking paracetamol.

Another common side effect is swollen glands in the armpit or neck, on the same side as the arm where you received the vaccine. You should see a doctor if this lasts longer than 10 days.

Side effects for each covid-19 dose:

Coronavirus vaccines differ from one another and the side effects of some drugs are more severe after the first dose, while the side effects of others are more severe after the second dose but good news is most common side effects will only last for a day or two.

It is still very important to receive the second dose even if you have side effects from the first dose as you will be best protected against the virus by taking the full recommended course. 


  • There may be side effects, but they should subside within a few days.
  • Neither the Pfizer-BioNTech nor Moderna COVID-19 Vaccines are safe without 2 shots for maximum protection. The second shot should be given even if you suffer from side effects from the first, unless a vaccination provider or your doctor recommends otherwise.
  • Johnson & Johnson's COVID-19 vaccine (J&J/Janssen) is only required as one dose to give you maximum protection. 
  • After a vaccination, your body takes time to build protection. When people receive the second dose of the Covid-19 vaccine, either Pfizer-BioNTech, Moderna, or when they receive the single dose J&J/Janssen, they're considered fully vaccinated. Protect yourself and others with all the tools you have at your disposal. A full vaccination is not recommended before travel.
  • COVID-19 vaccines have been administered to millions of people without causing long-term side effects.
  • COVID-19 vaccine safety is continuously monitored by the CDC. The FDA will work with the vaccine manufacturer to find a solution that will address the specific safety concern related to the vaccine (for example, a manufacturing problem or problem with the vaccine itself).

Vaccinated individuals can take part in many of the activities they did prior to the pandemic. 

Can you be a carrier of covid after vaccine:

Fully vaccinated people can still carry and transmit the virus to others including other vaccinated people but research suggests this transmission is at a lower rate. The elderly, those with immune or chronic health conditions or those with underlying health disorders may not have the best protective response to vaccines, such as the COVID-19 vaccines so its still advised to take precautions even after you've been completely vaccinated, not just for yourself but for the safety and protection of others.


Can you get Covid if you are fully vaccinated:

There is clear evidence that people who are fully vaccinated can acquire COVID-19 infections despite being fully immunised and this is why public health officials have called for more mask wearers. Emerging variants  (e.g the Delta varient) are particularly concerning in this regard.

Side effect sickness after getting the vaccine:

Having some side effects is normal because your body is building up its defences and it may be difficult to perform daily activities while you are experiencing these side effects but they should pass in a few days.

Of those vaccinated people who have reported symptoms, the vast majority report mild ones with shorter duration.

Related questions:

How long does the vaccine take to build up immunity to COVID-19:

The body builds up immunity to the vaccine over a few weeks so in order to avoid infection, you should continue to take recommended precautions as with all medicines.

In some cases, people who get COVID-19 despite the vaccination may suffer less severe symptoms.

What are the most common symptoms of the Delta variant:

If vaccinated people contract the Delta variant, they are typically asymptomatic or have very mild symptoms. A common cold-like illness, with symptoms such as fever, headache, and cough, but with additional symptoms including loss of smell.

Can you take the COVID-19 vaccine if you have allergies:

Most people with allergies (including food or penicillin allergies) can be vaccinated against COVID-19.

Tell healthcare staff before you're vaccinated if you've ever had a serious allergic reaction (including anaphylaxis). They may ask what you're allergic to, to make sure you can have the vaccine.

What are some of the common side effects of the COVID-19 vaccine:

Within one day of vaccination, recipients may experience fever, chills (or rigors), sweating, headaches (like migraines), nausea, myalgia, and malaise. Generally, these effects lasted a few days.

What are the mild-to-moderate side effects of the COVID-19 vaccine:

A low-grade fever or mild muscle aches are common side effects and are part of the body's immune response to the vaccination. The body's immune system is responding to the antigen (which initiates the immune response) and getting ready to fight off the virus.

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