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Questions tagged [covid-19]

Describes the clinical disease caused by the SARS-CoV-2 virus

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2 answers
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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 ...
viuser's user avatar
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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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0 votes
2 answers
2k views

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 ...
Pietro's user avatar
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2 votes
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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 ...
Ladan's user avatar
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2 votes
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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 ...
Billy's user avatar
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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 ...
Unknown user's user avatar
4 votes
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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 ...
Ash90's user avatar
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-1 votes
1 answer
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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 ...
Bishop D's user avatar
3 votes
0 answers
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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 ...
Michael Altfield's user avatar
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1 answer
40 views

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, ...
Michael Altfield's user avatar
3 votes
1 answer
82 views

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 ...
End Antisemitic Hate's user avatar
2 votes
1 answer
128 views

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 ...
Pablo's user avatar
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5 votes
3 answers
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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 ...
stevec's user avatar
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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 ...
Him's user avatar
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1 vote
1 answer
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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, ...
Stilez's user avatar
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1 vote
0 answers
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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: ...
Riemann's user avatar
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1 answer
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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 ...
J Fabian Meier's user avatar
12 votes
3 answers
6k views

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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14 votes
1 answer
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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 ...
Mandelbrotter's user avatar
2 votes
2 answers
136 views

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' ...
MagicLegend's user avatar
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0 answers
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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-...
User65535's user avatar
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1 answer
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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 ...
Don_S's user avatar
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7 votes
1 answer
2k views

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 ...
Ian Campbell's user avatar
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5 votes
1 answer
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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 ...
user11235's user avatar
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2 votes
0 answers
69 views

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.
Beans's user avatar
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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 ...
guest's user avatar
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2 votes
1 answer
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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 ...
Casper the Friendly Grue's user avatar
-2 votes
1 answer
113 views

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 ...
Sedumjoy's user avatar
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1 vote
0 answers
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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 ...
Alexei's user avatar
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0 votes
1 answer
92 views

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?
Adam R. Turner's user avatar
1 vote
0 answers
107 views

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 ...
John's user avatar
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2 votes
1 answer
468 views

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 ...
Ian Campbell's user avatar
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0 votes
1 answer
47 views

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 ...
hkBst's user avatar
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4 votes
1 answer
97 views

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 ...
Alex R's user avatar
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7 votes
2 answers
221 views

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 ...
Curt's user avatar
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-4 votes
1 answer
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Has there been any medical studies as to whether drinking a 'Hot Toddy' can help to ward off or to help heal someone who has COVID-19? [closed]

I am curious to know if there has been any medical studies that have been conducted to ascertain if drinking a 'Hot Toddy' every day will decrease the odds of someone being infected by the COVID-19 ...
user57467's user avatar
3 votes
0 answers
52 views

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 ...
Stilez's user avatar
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1 vote
0 answers
33 views

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 ...
Pistachio's user avatar
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1 vote
1 answer
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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 ...
einpoklum's user avatar
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8 votes
1 answer
203 views

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 (...
DK2AX's user avatar
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2 votes
1 answer
52 views

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 ...
Stilez's user avatar
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11 votes
0 answers
144 views

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 ...
Andrew Micallef's user avatar
1 vote
0 answers
19 views

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 ...
Constantine's user avatar
-4 votes
3 answers
191 views

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 ...
Frank's user avatar
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1 vote
0 answers
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Any merit to the notion of limiting COVID19 vaccine only to those aged 60+ or with a comorbidity

Last night I heard Peter Navarro, Trade Czar under the Trump administration, being interviewed on TV. He was plugging his new book. During the course of the sloppy interview, in which he and the ...
Tim's user avatar
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1 vote
0 answers
50 views

Is the risk of cardiac arrest still superior, for unvaccinated people contracting Omicron, than for people receiving RNA vaccines?

According to this article, Vaccines linked to small heart inflammation Among those who had received the Pfizer vaccine, the researchers noted, the rate of myocarditis or myopericarditis was 1.4 cases ...
Pablo's user avatar
  • 1,095
1 vote
1 answer
415 views

How long it will take for a RT-PCR test CT value to go to from 27 to 35?

A RT-PCR test came positive and the CT value is 27, which means apparently a low contagion level. But is there a way to estimate when (in average) it could go til 35 (the cutoff)? The graph from here ...
Vega's user avatar
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