Had covid with blood clots is vaccination ok?

Posted by umhiguys @umhiguys, Apr 30, 2021

Having had covid with terrible life threatening bloodclots last may of 2020 is it safe for people to take any of the vaccinations whose body reacts to covid like this or should we decline?

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@umhiguys – Good morning and welcome to Mayo Connect. This is an excellent question. This must have been so scary for you. When I sat down to have both of my vaccine shots the first question was whether I was on any blood thinners. I imagine that you are since you have already had blood clots.
This is the advice that I found:

"In the puzzle of rare blood clots and Covid vaccines, researchers …
https://www.statnews.com › 2021/04/13 › researchers-s…
Apr 13, 2021 — The challenge for public health officials is that these deadly clots occur without vaccines. It's possible that some people who developed clots after being vaccinated would have developed them even without being vaccinated.

According to the Food and Drug Administration, “if you are taking blood thinners or have a bleeding disorder, you should mention it to the provider who is giving you your COVID-19 vaccination” (sources – Moderna, Pfizer, and Johnson and Johnson FDA fact sheets). Like with any injection, there is a risk of bleeding and bruising at the injection site, but there are currently no known serious effects related to getting the vaccine while taking a blood thinner. You may be recommended to apply firm pressure to the injection site for at least 5 minutes to reduce bruising. To learn more, visit the Food and Drug Administration (source – FDA) (last updated 3/26/2021)."

Have you asked your PCP or doctor in charge of your covid-19 care and recovery? How do you feel about it? How are you feeling?


Hello, and welcome to Mayo Connect. We are a community of people living with a variety of health conditions who share our journeys and try to help each other along the way. We are not medical professionals, and therefore cannot give you medical advice.
I have looked for definitive answers about your questions from the CDC, Mayo Clinic and the pharmaceutical companies, but did not find anything specifically addressing your issue.
I suggest you contact the physician(s) who treated you when you had the blod clots and follow their recommendations.


Hi @umhiguys I would address this question with your physician who treated your blood clots. It is certainly concerning. Unfortunately there are still many unknowns about the vaccines for the short and long term. When the CDC put a hold on the J&J vaccine for further investigation, a spokesman who was a physician did say that the blood clots in question were cerebral in nature. That is where the concentration was at the time for the 6 women who were affected. He did say there were other locations for bloods clots which were not the focus. Of the 6 women one had been taking an oral contraceptive, another was obese, and third had hypertension. No information if any were taking blood thinners at the time. A question was imposed regarding the cerebral blood clots. Was it seen during the trials? The physician answered only one was reported but one cerebral blood clot was not enough to warrant an investigation. I can understand wanting more information for the basis of your decision. Talk to your doctor to make your best decision. Certainly the virus itself may impose more severe symptoms compared to the vaccines. It may not be an easy decision to make if you are at low risk for exposure to the virus. There is a lot to consider. Some people, although rare to unvaccinated people, still developed Covid symptoms to be hospitalized and some even died. On April 15th it was reported on the network news that 76 million American residents were fully vaccinated. Of those 5,800 known cases had developed. 7% were hospitalized and 74 died. While there is no guarantee we can certainly limit some of our risks.


Hi actually i never had blood clotsbefore covid and dont have any now that im over it.i had been on lovanox?i think thats what it was called but that was only for a week or two after i got out of the hospital and it was a security measure just in case. So now im stumped what to do cause i am obese for sure…but thanks for the advice to go back to the doc who treated me at the time. I will be sure to post how it turns out. Im sure others are as wary as i am.


Hi @umhiguys. It is typical for the lovenox injection following a hospital procedure to prevent blood clots. Please keeps us informed after you talk with your doctor who treated your blood clots. Hopefully you will get more answers. After all the vaccines are new technology. I don’t blame you for being cautious. Many times I have seen medications approved then years later we find out the problems. These covid vaccines were rolled out rather quickly so not much time was allowed for research. I think it is great for people to be given options. I respect folks who feel comfortable after not knowing all the facts to get vaccinated. They made the best decision for themselves as they know how. At the same time I am grateful for being allowed to wait. I don’t feel it is right to recommend a medication I do not know much about. Instead, I give the facts that are known so that the individual can come to a decision. I have no motivation for individuals to get vaccinated. It is strictly their own personal reasoning and not a monetary or personal gain for me. We all have to do our best as we know how when it comes to our health. Just because the majority of people do something, it doesn’t mean it is the best either.


Dear avmcbellar, Thank you for your answer. Even though I have a different covid question, too often I am told "just get the vaccination". There are too many unknown.


@connie1977 glad I can help. Go with your gut feeling for what to do. Obviously we all have different risks to consider. What is important to you? Many times people try to persuade me to get vaccinated for “herd immunity”. Is that ever obtainable in our society with all the variants when the vaccines do not prevent transmission? For those who have the option for low risk exposure what about the health risks involved with the vaccines? It is unknown in the long run if those vaccines will cause health issues. Is it worth it, especially if an individual is a low risk for exposure, to risk health issues from the covid vaccines just to please others in reaching the so called “herd immunity”? These are all the questions I have considered because it will be me to deal with the consequences like increased neuropathy pain or disability and not anyone else in my family.

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