If Flu and Covid vaccines take 2 weeks to work, why is fever on day 1?

[Anonymous]

Anonymous wrote:Your body notes there is a foreign substance and is fighting it.

If you have a terrible immune system, this will not happen.

I’ve never had a fever after any vaccine- flu, covid, shingles, whatever.

I also rarely get sick. I don’t think lack of fever = terrible immune system

[Anonymous]

I've never had a fever after a shot, nor have my kids. Is that a bad thing? Does that mean it's not working?

[Anonymous]

Anonymous wrote:I've never had a fever after a shot, nor have my kids. Is that a bad thing? Does that mean it's not working?

This seems to be highly person specific. I never get fevers from the flu shots, but my flu cases have generally been pretty mild. The people in my family that have fevers and suffer the worst after flu or other shots also tend to be the people that go down exceptionally hard when they catch the real deal.

After years of avoiding flu shots only to nearly die of the flu last year, my dad has finally accepted that being mildly miserable for 24-48 hours is preferable to being hospitalized on the verge of death for 48-96.

[Anonymous]

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

When I get a vaccine, I get told that I might experience flu-like symptoms. Every time. And yes, I consider a fever a flu symptom.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

This is OP. I'm not sure what you're so bothered by. Yes, I'm college-educated. I also get the vaccines and in fact went to great lengths to get the original Covid vaccines as soon as humanly possible when there were wait lists and other hurdles. My question had nothing to do with vaccine denial or skepticism.

The public health resources I've seen say you may or may not get a fever and that if you don't, it doesn't necessarily mean the vaccine isn't working. I simply wanted to know what it does mean then because I've heard fevers help when fighting the actual diseases. The PP gave a very helpful response that I wasn't readily finding Googling.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

This is OP. Maybe I'm just very bad at Googling, but I didn't readily find the answer to my question. Here are the types of info I found, from CDC, for example:

"Sometimes after vaccination, the process of building immunity can cause symptoms, such as fever. These symptoms are normal signs the body is building immunity."

"Many people have reported common side effects after COVID-19 vaccination, like pain or swelling at the injection site, a headache, chills, or fever. These reactions are common and are normal signs that your body is building protection."

Those are not nuanced enough to answer my specific question.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

This is OP. Maybe I'm just very bad at Googling, but I didn't readily find the answer to my question. Here are the types of info I found, from CDC, for example:

"Sometimes after vaccination, the process of building immunity can cause symptoms, such as fever. These symptoms are normal signs the body is building immunity."

"Many people have reported common side effects after COVID-19 vaccination, like pain or swelling at the injection site, a headache, chills, or fever. These reactions are common and are normal signs that your body is building protection."

Those are not nuanced enough to answer my specific question.

Yes, I know. Thats what I am so utterly pissed about our education system- especially with Public Health. People want to know more and they should understand how it works instead of just being told to do it. People need to learn how immune systems work- to the best of our limited knowledge. By not being super explicit and having kids learn about this in ES/MS/HS that grows with them to adulthood, its super simplified over and over again with no real education.

It's really hard to find digestible information on immune cells, the immune system as explained by the PP above, how they work, a sequence video on vaccination and what it does internally and why it might "fail" and what success means, replication videos and how transmission is affected by increased vaccination rates.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

This is OP. Maybe I'm just very bad at Googling, but I didn't readily find the answer to my question. Here are the types of info I found, from CDC, for example:

"Sometimes after vaccination, the process of building immunity can cause symptoms, such as fever. These symptoms are normal signs the body is building immunity."

"Many people have reported common side effects after COVID-19 vaccination, like pain or swelling at the injection site, a headache, chills, or fever. These reactions are common and are normal signs that your body is building protection."

Those are not nuanced enough to answer my specific question.

It seems specific enough.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

This is OP. Maybe I'm just very bad at Googling, but I didn't readily find the answer to my question. Here are the types of info I found, from CDC, for example:

"Sometimes after vaccination, the process of building immunity can cause symptoms, such as fever. These symptoms are normal signs the body is building immunity."

"Many people have reported common side effects after COVID-19 vaccination, like pain or swelling at the injection site, a headache, chills, or fever. These reactions are common and are normal signs that your body is building protection."

Those are not nuanced enough to answer my specific question.

Yes, I know. Thats what I am so utterly pissed about our education system- especially with Public Health. People want to know more and they should understand how it works instead of just being told to do it. People need to learn how immune systems work- to the best of our limited knowledge. By not being super explicit and having kids learn about this in ES/MS/HS that grows with them to adulthood, its super simplified over and over again with no real education.

It's really hard to find digestible information on immune cells, the immune system as explained by the PP above, how they work, a sequence video on vaccination and what it does internally and why it might "fail" and what success means, replication videos and how transmission is affected by increased vaccination rates.

I agree with the PP that vaccine education is really weak. My kid went to the Takoma Park Math and Science Magnet (pre-COVID) where he was taught health by a vaccine-denying former nurse. Doh! Forehead smack! It's a good thing that it was a math and science magnet because those smarty-pants magnet kids definitely told her she was wrong and explained to the whole class, magnet and non-magnet, all about how vaccines work.

It's not a surprise that the CDC doesn't post good vaccine explanations (RFK aside). I find that a lot of what is wrong with today's political and policy messaging is that there is no space for longer explanations -- news or policy sources don't produce it and people don't consume it or the response is to demonize the messenger or both sides an issue instead of focusing on the explanation and addressing further questions. I don't know how we as a country get out of this dumbing down of everything.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:OP, there are two types of immune responses: innate and adaptive.

Innate immune responses are generalized, not specific to the antigen. They unfold the same way every time. They also happen immediately. Fever is an innate response.

The adaptive immune system is antigen-specific. Adaptive responses include making the specific antibodies needed to neutralize this antigen, and developing the specific memory cells that help your body recognize and defend against that pathogen in the future. Because the adaptive immune system is quite complex, and involves some degree of “learning” it takes quite a bit longer than the innate responses.

This is OP and this is what I was looking for. I had no idea. Thank you!

AND THIS IS WHAT IS SO SAD ABOUT OUR PUBLIC HEALTH AND EDUCATION IN THIS COUNTRY. I would even bet the OP is college- educated. FFS.

The info is there and available to anyone who wants it, but vaccine misinformation is just everywhere and unrelenting and it drowns everything else out. The idea is to create doubt so hesitancy seems “reasonable”.

It can also be confusing when some vaccines, like rabies, are prescribed only after exposure (excepting vet staff who are exposed regularly). Even the MMR and Tetanus vaccines can be partially effective when taken after exposure. It can be very easy to miss that for COVID and flu, waiting until you’re in the throes of it is too late.

This is OP. Maybe I'm just very bad at Googling, but I didn't readily find the answer to my question. Here are the types of info I found, from CDC, for example:

"Sometimes after vaccination, the process of building immunity can cause symptoms, such as fever. These symptoms are normal signs the body is building immunity."

"Many people have reported common side effects after COVID-19 vaccination, like pain or swelling at the injection site, a headache, chills, or fever. These reactions are common and are normal signs that your body is building protection."

Those are not nuanced enough to answer my specific question.

Yes, I know. Thats what I am so utterly pissed about our education system- especially with Public Health. People want to know more and they should understand how it works instead of just being told to do it. People need to learn how immune systems work- to the best of our limited knowledge. By not being super explicit and having kids learn about this in ES/MS/HS that grows with them to adulthood, its super simplified over and over again with no real education.

It's really hard to find digestible information on immune cells, the immune system as explained by the PP above, how they work, a sequence video on vaccination and what it does internally and why it might "fail" and what success means, replication videos and how transmission is affected by increased vaccination rates.

I agree with the PP that vaccine education is really weak. My kid went to the Takoma Park Math and Science Magnet (pre-COVID) where he was taught health by a vaccine-denying former nurse. Doh! Forehead smack! It's a good thing that it was a math and science magnet because those smarty-pants magnet kids definitely told her she was wrong and explained to the whole class, magnet and non-magnet, all about how vaccines work.

It's not a surprise that the CDC doesn't post good vaccine explanations (RFK aside). I find that a lot of what is wrong with today's political and policy messaging is that there is no space for longer explanations -- news or policy sources don't produce it and people don't consume it or the response is to demonize the messenger or both sides an issue instead of focusing on the explanation and addressing further questions. I don't know how we as a country get out of this dumbing down of everything.

Yes, the CDC article was from September 2024, which predates RFK.