Questions tagged [vaccine]

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6
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1answer
93 views

Why do some vaccines have only a short protection span?

Why does the rabies vaccine have only a limited longevity of around 2 years (source: immunize.org), while the hepatitis b vaccine has a longevity of more than 25 years (source: CDC)? In addition, if ...
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0answers
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Why *exactly* are mRNA covid vaccines delivered intramuscularly?

I would like to understand what exact processes make intramuscular injection of particularly mRNA covid vaccines the best delivery option. I've asked doctors and googled, but I get contradictory ...
-3
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1answer
157 views

Are vaccines much more deadly than people (and scientists) think?

In the response to the question Are Covid-19 vaccines much more deadly than people (and scientists) think? is mentioned that "Docs are instructed not to report deaths after a flu vaccine that are ...
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2answers
684 views

Why is aspiration not commonly used for IM vaccine administration in the U.S.?

The CDC says it is "not necessary". I asked my local pharmacy and they will not do it even upon request and I am OK with that. But I have a question. By accident I happened to see a video ...
10
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2answers
11k views

Are Covid-19 vaccines much more deadly than people (and scientists) think?

The other day I read this chart on an Italian newspaper article I looked for the source, and I found only this tweet: https://twitter.com/Drs4CovidEthics/status/1432193260949172230 from Doctors for ...
4
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1answer
90 views

Did the NIH study find Moderna - Moderna gave more antibodies than Moderna-Pfizer?

An NIH study studied the efficacy of different combinations of Covid-19 vaccines in terms of the level of antibodies produced. Dr. Rob Swanda tweeted out a chart summarizing the results: So it seems ...
0
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0answers
39 views

How can the J&J vaccine shot be effective against COVID-19 if it only has a ~60% efficacy rate?

According to the CDC's page on the safety of J&J vaccines, the reported efficacy rate of the vaccine is a staggeringly low 66.3%. That said, the government is still promoting and touting the J&...
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0answers
34 views

Covid vaccine second dose side effects and immunity

Does experiencing side effects such as fever/headache/muscle ache after the second dose of vaccine mean that immune system is weak and catching covid would have been more dangerous in comparison to ...
0
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1answer
33 views

What is the recommended interval for HPV vaccines such as Gardasil 9 for women and men up to age 45?

In October 2018, the US Food and Drug Administration announced it had expanded the approved age for the HPV vaccine up to age 45 for women and men. In June 2019, a key advisory committee for the US ...
-1
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1answer
49 views

How does Pfizer vaccine affect covid test?

Medical question on possible outcomes of tests. Assuming patient does NOT have actual covid. Perfectly Healthy A patient gets a Pfizer vaccine first dose today. Will the patient’s Covid nose swab ...
-4
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1answer
62 views

What is the authoritative US document that delineates concrete standards for vaccine approval?

What is the authoritative US document that delineates concrete standards for vaccine approval? Presumably said document would be from the FDA. By concrete, this should include all measurable ...
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0answers
53 views

Mix-&-Match of 3 COVID-19 Vaccines?

Now that getting the third shot of COVID-19 vaccine is allowed, which one of the following order of 3 vaccines will lead to better protection and more robust immune system response against Covid-19 ...
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3answers
141 views

Are viral loads in vaccinated people only infectious with the delta variant? If so, why not with previous COVID-19 variants?

I'm reading on https://sfist.com/2021/07/27/cdc-confirms-that-viral-loads-in-vaccinated-people-with-delta-are-indistinguishable-from-unvaccinated/ (mirror): CDC Confirms That Viral Loads In ...
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3answers
245 views

Why are mRNA vaccines not yet available against other diseases?

The mRNA vaccines against developing COVID-19 are obviously the first approved mRNA vaccines. We are probably at the beginning of an mRNA vaccine evolution. I've recently read a very interesting ...
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0answers
61 views

(How) does taking all available vaccines contribute to cross- and trained immunity?

Many countries have national vaccination campaigns that consists of vaccines against several different diseases. I expect that the choice of vaccines that are included in such programs is mainly ...
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0answers
26 views

If you've already been infected with SARS-CoV-2, do the vaccines cause fewer side effects?

Assuming that I had Covid-19 not so long ago. My body should have produced some type of antibodies to defend against the infection*. If I now get one of the vaccines, would it be more likely that ...
0
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1answer
135 views

A recent Israeli study found the Pfizer COVID-19 vaccine to have only 64% efficacy against the Delta strain - is that with full vaccination?

The numbers from Israel (https://www.bloomberg.com/news/articles/2021-07-05/israel-sees-decline-in-pfizer-vaccine-efficacy-rate-ynet-says) indicate the Pfizer vaccine is quickly losing efficacy ...
10
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1answer
285 views

Can the HPV vaccine be effective if you are already infected? [closed]

I was just wondering about this subject, when I did a blood exam today and I picked a paper about available vaccines and I saw a vaccine against HPV, the same my mom always bothered me to take it. I'm ...