Questions tagged [covid-19]
Describes the clinical disease caused by the SARS-CoV-2 virus
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Is there any evidence to say the COVID vaccine can cause long COVID symptoms?
I saw a video of Dr. Jordon Vaughn's speaking before Congress saying he believes that the COVID vaccine can cause long COVID symptoms. I was hoping someone can shed some light on this claim from a ...
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Which COVID-19 lockdown strategies in the EU were most effective in saving lives?
During the COVID-19 pandemic, European countries implemented a variety of strategies—ranging from strict lockdowns to more lenient approaches with social distancing, household "bubbles", ...
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Is the paper quoted below a bona fide scientific paper?
Here is the link:
https://publichealthpolicyjournal.com/review-of-calls-for-market-removal-of-covid-19-vaccines-intensify-risks-far-outweigh-theoretical-benefits/
It looks genuine to me, it seems to ...
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Does avoiding vaccination help avoid myocarditis?
The picture that emerges from this 2022 article by Voleti et al https://doi.org/10.3389/fcvm.2022.951314 is that the unvaccinated are 7 times as likely to get myocarditis than the vaccinated. For the ...
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How common is tachycardia as a symptom of COVID-19?
How common is tachycardia as a symptom of current COVID-19 infection? I have found quite a bit of information about tachycardia after COVID, such as this paper and this Cleveland Clinic article, but ...
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(Re)Using HEPA filters at a Convention [closed]
We were planning to bring residential HEPA filters to a convention to reduce potential viral load. However, the filters are rated for 3-6 months, and it seems wasteful to discard the filters after a ...
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Asymptomatic infections in the Pfizer/BioNTech approval study of Covid-19 vaccine
The usual criticism of the Pfizer / BioNTech approval study for their mRNA Covid-19 Vaccine was that asymptomatic infections could not be detected.
But according to the protocol, page 65, regular ...
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Comparitive exposure to spike protein between mRNA vaccines and an actual Covid infection
Do we have any data or estimation regarding the relative spike protein exposure between an mRNA vaccine and an actual Covid infection?
This is a complicated question.
Assume two identical humans are ...
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I have my Covid-19 vaccine batch number. How can I know about its side effects?
There should be a public database where are listed the side effects of all batches of all Covid-19 vaccines injected so far.
I have the batch number of my jabs.
Does anyone know how/where to access ...
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Is Covid-19 still a problem/should it be considered one? [closed]
I'm hearing different things from different people (as is always the case), about the current status of Covid-19.
Is the pandemic (endemic?) still an issue that's worse than influenza or other common ...
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Useful indices in epidemiology for assesing the performance of a country in Covid19 pandemic
In my dataset I have daily observations of Covid19 data for many countries. More specifically, I have daily observations about:
new_cases (New confirmed cases of COVID-19. Counts can include probable ...
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How bad are covid vaccines? [closed]
For the past year I've been hearing about people claiming that those who took the covid jabs are dropping like flies. I even hear people claim that the covid vaccinations are depopulation tools and ...
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Does prior COVID infection increase or decrease mortality on COVID reinfection?
One recent large scale study found that a prior COVID infection doubles your risk of dying when you later catch a subsequent COVID infection.
This study followed 5 million people in the Veterans ...
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How would you properly interpret this graph? [closed]
I recently came across this article and I am having a hard time trying to properly interpret this graph. The graph is pictured below. Below that is the actual link to the article. I appreciate any ...
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Are there any covid-19 vaccine side effects that can't be gained from a covid infection?
Some side effects from a covid vaccine are caused by the patient's immune system's response to the vaccine - for example myocarditis (source 1, source 2) - which will therefore also occur from a covid ...
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Which countries advocated for "support bubbles" or "pods" during the COVID-19 pandemic?
Which countries specifically included the concept of "bubbles" or "pods" in their communication and education campaigns to their populations during the COVID-19 pandemic?
I ...
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Important thresholds in the number of postive cases of COVID-19 per capita
What are some important quantitative thresholds on the charts tracking the number of positive cases of COVID-19?
I've been monitoring the number of positive cases of COVID-19 for a couple years now, ...
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Does a shorter COVID-19 vaccination interval increase efficacy of booster vaccines?
In performing research on COVID-19 vaccines, I came across this WebMD article regarding the efficacy of bivalent boosters against recent COVID-19 variants.
The article includes a quote from Dr. Hana ...
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Is Omicron now confirmed less lethal than influenza?
Back in March, a study made in Japan comparing Omicron with influenza, when most of the Japanese population (about 90%) had only 2 vaccine doses, and no previous infection with Omicron, claimed ...
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What is the meaning of "co-formulated"?
I was reading the The right drug for the right patient section of the University of Sydney website, which provides these clinical guidelines (flow chart), and says (bold my own):
There are no studies ...
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Covid 19 rapid test possible errors from waiting too long to read?
What are the error modes of waiting too long to read a rapid antigen test? Does this increase the probability of the user reading a false positive, false negative, or both? How does this depend on ...
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Negative COVID test day of event, positive next morning. What is the risk of transmission?
Imagine someone attends a relatively large social gathering during the day and evening. That morning they had a negative COVID test. There was substantial close contact, such as hugging.
The next day, ...
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False positives of PCR test on symptomatic individuals
On this website, I see that less than 2% of people who don’t have Covid-19 test positive with a PCR test.
What happens to this percentage when we only consider symptomatic people?
So my question is: ...
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Administration of Covid Vaccine for Small Children in the EU
Is there a way to see the progress of the administration of Covid vaccines for small children (age under five) in the EU?
It is not easy to find all information in the usual news sources.
Maybe there ...
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Why does the World Health Organization still treat COVID-19 as a pandemic, when it is now reportedly causing fewer deaths than influenza?
Supposedly the World Health Organization is the top authority worldwide for public health. One would hope that they base their decisions on empirical data and not beliefs. However, from my perspective,...
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Rapid Response COVID-19 Antigen Test: What can be assumed by the control bar?
Rapid COVID-19 antigen tests include a control line similar to this:
From Case Western Reserve rapid testing instruction available here.
What does the control bar/strip control for?
All the ...
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What is the difference between different mask standards?
I am looking at buying a new batch of masks, since I still prefer to use a mask for my travelling. I am close to running out again, and the company that I previously got masks from now has a 'new' ...
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Is there any evidence that honey can help a COVID cough? [duplicate]
A cough is a frequent clinical sign of COVID-19, and there is some indication that coughing can cause lung "sprain" and long lasting damage.
The UK National Health service has a page on Self-...
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Would slight shifting of administration times of Paxlovid impact its efficacy?
Paxlovid (nirmatrelvir/ritonavir) is an oral medication indicated for patients recently diagnosed with COVID-19 and who are at high risk of deterioration. This drug received an emergency use ...
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Why should males use contraception for longer after taking molnupiravir for COVID?
Molnupiravir (brand name Lagevrio) is a small-molecule antiviral prodrug active against SARS-Cov-2 and in one trial was found to reduce risk of hospitalization or death from COVID by 52% (Jayk Bernal ...
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Why are COVID nucleic acid tests sometimes reported with non-integer CT values?
I saw a positive COVID test, and the CT value was not reported as an integer value. Instead, it was reported with two decimal point precision. I expected the CT value to be the number of PCR cycles.
I ...
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Why are some vaccines 100% effective while others aren’t? [closed]
Why are some vaccines, like for rabies, 100% effective at treating someone while others, like the covid 19 vaccine, isn’t.
Disclaimer: not a dumb vaccine skeptic or anything just genuinely curious.
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Covid may cause brain to degenerate three times faster than normal?
I found this study on GB News: Covid may cause brain to degenerate three times faster than normal, Oxford study suggests
After reading the article I still have a few questions. I found the study ...
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Can someone point me to a good, up-to-date review article on the effectiveness of vaccines against the omicron variant of the coronavirus?
I would like to learn about the effectiveness of vaccines against the omicron variant of the coronavirus. I believe a review article from a scientific journal would have the best information. I ...
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Is there any general consensus in the research on what the maximum duration is that the mRNA vaccine spike remains in the body?
Is there any general consensus in the research on what the maximum duration is that the mRNA vaccine spike remains in the body?
I thought I read some time ago from CDC but could be mistaken that at ...
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Effectiveness of COVID-19 "booster" (typically the third shot) when being administered after a long time following the initial two doses
In layman's terms, "booster" seems to mean to enhance upon the initial vaccination dose(s). This article suggests administering it after about six months.
I am considering having the third ...
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Does this infographic show that masks increased the transmission of COVID-19 in Los Angeles County?
As the title says, my father alleges that this graph shows that masks have increased COVID-19 rates. Does the graph prove this relationship, or is this just a faulty correlation?
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Ivermectin Paper with Hard To Believe Conclusion, Can I Get Some Help? [closed]
Is this a robust study and are the conclusions supported by the data?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8417612/
Emphasis is mine.
Two doses (300 μg/kg/dose in a gap of 72 hours) of ...
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How Long Must a Window Remain Open to Decrease the Risk of COVID?
Suppose there is an emergency and 10 fire fighters enter an apartment. None are wearing masks. Many public health authorities recommend opening windows to decrease the risk of COVID-19 infection.
For ...
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smoking and coronavirus [closed]
In the beginning of the coronavirus pandemic, there was some noise about smoking being a risk factor when contracting coronavirus disease. Then there was a deafening silence.
Beginning of 2022, what ...
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How long after COVID-like symptoms start can one still find out if what they had was COVID?
Suppose someone has COVID-like symptoms. Let's pick an arbitrary date; say they wake up coughing on February 1st, 2022, with no prior symptoms, and unknown potential exposure date.
If this person is ...
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Did covid vaccine studies use an active placebo (with side effects)?
I know that the studies done by Pfizer, et al, used standard methods with a placebo control group. If you read about blinded experiments here, it mentions:
A common cause for unblinding is the ...
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What do we know about Long Covid and Omicron?
Longer term covid symptoms/sequalia ("Long covid") tentatively seem to be attributed to the virus playing havoc with bodily organs, the bloodstream, perhaps the immune system, and so on. Its ...
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Help interpreting PCR lab results [closed]
Started isolating after my brother, who I live with tested positive, and four days later I was also testing positive (making it likely he transmitted it to me). I did a PCR test and the lab returned ...
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Is the WHO guideline on registering covid-19 deaths very expansive?
In this WHO guidelines document: Guidelines for certification classification of covid-19 as cause of death, it says:
2. DEFINITION FOR DEATHS DUE TO COVID-19
A death due to COVID-19 is defined for ...
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Can a RT-PCR test claim 100% sensitivity and specificity?
A recent RT-PCR test for SARS-CoV-2 from a private laboratory lists the test's sensitivity and specificity as 100%. The test certificate lists this next to the result:
Ref. value/Норма
Negative (...
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How accurate is this covid-19 article related to reinfection risk after recovering from omicron?
Sorry if this is wordy. I've tried to include the research I did, before asking. If anything is poorly worded, let me know, I'll try to fix it.
This article, although sketchy, and slightly ...
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Why is the flu more deadly to children than COVID-19?
Or better framed: Why are children not developing as severe reactions from COVID when they tend to fare much worse from seasonal flu?
Is the answer something along the lines of: Those that don't die ...
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Susceptibility of β-Thalassemia Heterozygotes to COVID-19
A recent study by medical researchers in Greece (https://pubmed.ncbi.nlm.nih.gov/34441941/) concluded that β-Thalassemia Heterozygotes (carriers) are more susceptible to severe symptoms of COVID-19 as ...
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Are covid vaccinations and boosters still useful and if not, why are governments and agencies promoting them?
So regarding Omicron, the latest research shows that vaccines and convalescent immunity have no or negligible effect on Omicron, and that booster shots have very little neutralising activity.
On the ...
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