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Questions tagged [covid-19]

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

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Why doesn't WHO think wearing mask is protection measure for COVID-19? [duplicate]

In WHO official website "What can I do to protect myself and prevent the spread of disease?", it doesn't mention that wearing mask an effective measure to protect people. I don't understand why ...
卢声远 Shengyuan Lu's user avatar
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1 answer
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If I get COVID-19, can I get cured by myself?

Suppose I get infected by COVID-19. I am a healthy person but with weight issues, according to the standard weight tables. Can my immune system cure me by itself? That is, without the need of ...
I likeThatMeow's user avatar
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Why it's said a coronavirus vaccine wont be ready for using in 12-18 months when for the H1N1 2009 outbreak there were vaccines available in 6 months?

From different sources we hear that a coronavirus vaccine might be ready in weeks / April / 3 months, but that they would require testing and mass production and it won't be ready to use until 12/18 ...
Pablo's user avatar
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What information we have about transmission of COVID-19 in detail?

A lot of information we have how the COVID-19 virus spreads in general. But what do we know about the detected and proven way of transmission: about which items (door handles, plates, salad bar, ...) ...
gotwo's user avatar
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Is it possible that COVID-19 virus exist in a human body, but be absent from samples taken from nose and back of throat?

As specified in this link, COVID-19 tests start with taking samples from the nose or back or throat of people. Based on growth rate of this disease, I thought what if those samples are not positive (...
Saeed Neamati's user avatar
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Would a COVID-19 controlled burn facilitate herd immunity?

In forest management, a controlled burn is “used for hazard reduction [to] decrease the likelihood of serious hotter fires” [W]. In backfiring strategy, “firefighters attempt to halt the advance of a ...
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Is Coronavirus transmission affected by the season of the host country / hemisphere?

First when the Coronavirus outbreak happened in China, some people argued that the outbreak had to do with a supposed faulty chinese health care system, due to China not being a "developed country". ...
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COVID-19 Variants

I have been looking at this "new variant" of the virus which causes COVID-19 and the British Medical Journal has said What do we know about this new SARS-CoV-2 variant? It’s been snappily ...
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Do participants of the COVID-19 vaccine trials get exposed to the virus?

It might be obvious to many in the medical field, but it had me wondering when reading about the new trials for the Oxford-AstraZeneca vaccine that is currently being tested on a group of people. When ...
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What does it mean to say a population has “low levels of general immunity”?

The UN Humanitarian Coordinator in Yemen, Lisa Grande, is quoted in several places (e.g. this CBS news article as saying (emphasis mine): [SARS-CoV-2] is now in Yemen and may quickly spread. […] ...
Peter LeFanu Lumsdaine's user avatar
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How do hospitals decide whether to reopen elective surgeries during this COVID-19 pandemic?

Many hospitals have cancelled or postponed elective procedures due to the current COVID-19 pandemic. What kinds of considerations are ethics committees making when deciding to reopen elective ...
D.Tan's user avatar
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Is it possible for humans to be resistant to certain viral infections without having specific antibodies in their blood?

Popular understanding of how viruses work split immunity into four categories: Virus doesn't affect humans at all No immunity - will get worst possible infection, seems to be the case with COVID-19 ...
JonathanReez's user avatar
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Can you recover from COVID-19, and then be reinfected so as to be a danger to other people?

Assuming I've contracted COVID-19 this January and made a full recovery and the antibodies have already left my body again. Now, I come into contact with someone who is sick and I inhale some COVID-19 ...
cheesus's user avatar
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Is Coronavirus (Covid-19) considered a pandemic?

It is my understanding that "epidemic" is an abnormally high amount of cases than expected. "Pandemic" refers to a epidemic that crosses continents (Please correct my understanding if it is wrong). ...
Chipster's user avatar
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What effect does social distancing have on the contagiousness and lethality of virus spread?

There are various degrees of 'lockdown'. From poorly worn masks and poor material choices, to people being confined to their homes for long periods of time. It is safe to assume that practical ...
Frank's user avatar
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Will getting a vaccine have any additional effect on your immune system if you already got covid-19?

Supposedly people who got covid-19 get immunity after it. According to this article, More SARS-COV-2 reinfections reported but still a rare event citing several studies, Bertollini and his colleagues ...
Pablo's user avatar
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Is using a shield rather then a mask effective with COVID-19?

I am seeing more people wearing a shield rather then a mask in public. I read this article here that talked about a mask alone as protection. To summarize the answer it was maybe a shield alone offers ...
Jon's user avatar
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How often do temperature checks actually detect cases of COVID-19?

One extremely common measure that companies are implementing is temperature checks when people come in the building. This has the advantage of being inexpensive, fast, and requiring little training. ...
EJoshuaS - Stand with Ukraine's user avatar
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Have there been any studies on how long COVID-19 remains infectious on various types of cloth?

I was thinking common items like wool and cotton clothing. Has any one discovered yet how long COVID-19 remains infectious on clothing? I have seen the usual items such as paper boxs, stainless ...
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What would it be like to participate in a (coronavirus) challenge trial, in the US?

I am strongly considering volunteering for any COVID human challenge trial that becomes available near me (midwestern United States). I am willing to undergo long-term isolation. However, I am not ...
capet's user avatar
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Why did countries initially presume that detecting COVID-19 requires a deep nasal swab?

According to a recent paper: To validate the use of saliva for SARS-CoV-2 detection, we tested nasopharyngeal and saliva samples from confirmed COVID-19 patients and ...
JonathanReez's user avatar
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Has there been any research into how people are being infected during hardcore lockdowns?

Several countries around the world have instituted extremely harsh lockdowns: France, Spain, Italy, New Zealand, Argentina. However for some reason all of those countries keep getting new infections 2+...
JonathanReez's user avatar
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Why did COVID-19 spread so much faster than H1N1/09 in China?

Despite China's success in controlling the COVID-19 outbreak insofar, a March 31 Science paper that analyzes the response has this intriguing (and alarming) observation The dispersal of COVID-19 ...
against very long user names's user avatar
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How can you determine whether a surgical mask is real or fake?

There are lots of surgical masks being sold online rather than traditional outlets such as home improvement shops and chemists. How do you ascertain it is likely to be a real mask that provides ...
Graham Chiu's user avatar
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Why will COVID-19 last for 12 to 18 months?

In this YouTube video min 0:32, Dr. Samir Gupta, says It typically would last for 12 to 18 months In How the Pandemic Will End in the ll. The Endgame section: No matter which strategy is ...
I likeThatMeow's user avatar
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1 answer
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What are the recommendations for interacting with vulnerable people during the COVID-19 pandemic?

What preventative measures should people take to avoid infecting others that they are in contact with, such as family members, who are more vulnerable (elderly and/or individuals with underlying ...
Maria's user avatar
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COVID-19 data sets with patient-level demographic information (e.g. age)

I'm searching for data sets about Covid-19 patients, where the column "age" occurs for each patient. All the sets I find are summarized, like the one from the John Hopkins University.
hinkebein's user avatar
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Why did J&J go for one dose?

The latest news from the US is that the CDC & FDA recommend a booster shot after only two months following the "single dose" J&J vaccine. Given the Fauci comment that J&J "...
against very long user names's user avatar
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Are Covishield and AstraZeneca AZD1222 the same?

Some sources simply equate the two. On the other hand, Covishield seems to be undergoing its own clinical trials. The statement by the Indian authorities calls it “Recombinant Chimpanzee Adenovirus ...
Roman Odaisky's user avatar
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Would vaccines against COVID variants (e.g. B.1.1.7) need *additional* clinical trials?

Every year, the influenza vaccine changes a little bit, incorporating different strains every year. I believe that these vaccine variants don't have to undergo clinical trials, that they piggyback on ...
Kaitlin Duck Sherwood's user avatar
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1 answer
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How can a vaccine prevent an individual from getting a disease but not from transmitting it?

In the news about the COVID-19 vaccines which are about to begin distribution, I've seen statements to the effect that "it’s not clear if the shot keeps the disease from being transmitted" (...
BrenBarn's user avatar
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Is an "asymptomatic COVID-19 case" a misnomer?

I've seen references to asymptomatic COVID-19 cases, and am wondering if this is incorrect use of the term. If COVID-19 is the disease caused by the novel coronavirus SARS-CoV-2, then aren't truly ...
glenviewjeff's user avatar
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How effective is eucalyptus-based treatment for curing COVID-19 (or coronavirus in general)?

According to The Jakarta Post, (Indonesia's) Agriculture Ministry claims to have developed eucalyptus-based COVID-19 treatment: The Agriculture Ministry has developed a eucalyptus-based treatment ...
Andrew T.'s user avatar
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Does any country have Covid-19 death (or infection) statistics by occupation?

I know this only marginally on-topic, but besides healthcare workers, I'd guess workers who meet a lot of people daily are also at high risk. There have been some reports in the US of supermarket ...
against very long user names's user avatar
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1 answer
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Why can't simple blood transfusions be used for treatment of COVID-19, instead of plasma transfusions? [closed]

It has been recently been shown that convalescent plasma from previously infected patients can be used to help others gain immunity against the disease. But why do we need to use plasma for this ...
JonathanReez's user avatar
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1 answer
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Is being of direct African ancestry a risk factor for severe COVID-19 disease?

In the initial outbreak of COVID-19 in Asia, the populations affected were fairly homogenous though ethnicity data isn't available from the studies published from China. However, Chinese are ...
Graham Chiu's user avatar
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Have any regulatory agencies announced they would allow live Covid-19 human challenges (for vaccine testing purposes)?

It's been mentioned to me in the discussion on another question that the following proposal has been advanced (in a medical journal): Controlled human challenge trials of SARS-CoV-2 vaccine ...
against very long user names's user avatar
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3 answers
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Is there any significance in reporting COVID-19 cases by population?

Many news outlets are reporting total COVID-19 cases by country and then comparing them to other countries. For example, comparing the total cases in the United States vs the total cases in China. As ...
Programmer's user avatar
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1 answer
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What is known about transmission of coronaviruses through food?

I've seen a lot data about COVID-19 virus (SARS-CoV-2) on dry surfaces. But what about wet mediums, in particular food? In the West, it's easy enough to disinfect supermarket packages (before opening ...
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3 votes
1 answer
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Steps to ensure incoming foods from many grocery bags do not carry COVID-19 virus into the Refrigerator, Kitchen, Home?

PPS: If this is more Biology or LifeHacks then please feel to move it there. But this is a key VIRUS VECTOR that will come indoors and we are not all competent to "sanitize" the variety of items. ...
3 votes
2 answers
127 views

Was there a clear effect attributable to FFP2 (~N95) mask mandates in Germany in crowded environments (shops, buses, etc.)?

Back in January or so, Bavaria at least mandated FFP2 (roughly equivalent to US N95) masks be worn in shops, buses and presumably similar environments. At least Berlin followed suit some months later ...
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3 votes
1 answer
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Why is booster shot needed when mRNA vaccines can induce memory cells?

My understanding about mRNA Covid-19 vaccines and memory cell is that they do induce memory T cell response similar to natural infection, and thus provide long term protection via the memory cell ...
Graviton's user avatar
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Have clusters of Covid-19 cases been linked to supermarkets?

BBC news about a traditional Indian vegetable market (mandi) as spreading ground for Covid-19: Koyambedu: India's coronavirus cluster at a vegetable market [...] On 8 May, Tamil Nadu officials said 1,...
against very long user names's user avatar
3 votes
3 answers
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How representative are the COVID-19 quarantine deadlines to the public health impact?

I don't know if this is the right place to ask this question. I feel like a lot of people are asking a very similar question, and all we have are deadlines for quarantines (as of writing this question,...
BarocliniCplusplus's user avatar
3 votes
1 answer
190 views

Can this product kill coronavirus?

I'm really really confused what product to buy to clean my laptop body to disinfect it from coronavirus. Like most doctors say use 60-70% alcohol based sanitizers to clean your hands. So does it ...
Vikas's user avatar
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1 answer
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What fraction health care workers contract COVID-19?

What fraction of health care workers contract COVID-19? Does anyone know of empirical evidence? Ideally, I’m looking for a reference to a study involving type of work, e.g., ER in close contact vs. ...
Don Slowik's user avatar
3 votes
3 answers
158 views

Is an old population a contributing factor for the spread of the disease of COVID-19?

There is a public figure/writer on the Internet which plays a sort of "informal journalist", who stated in a tweet (without a source), that "Italy is hit hard, experts say, because they have the ...
Pablo's user avatar
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Can coronaviruses be transmitted via banknotes?

When possible I avoid paying by cash and use contactless payments as much as I can, especially as of late. However, some outlets won't take card payments so cash exchange is inevitable. I am worried ...
Dave White's user avatar
3 votes
1 answer
72 views

Would "working out" with a respiratory muscle training device improve survivability of ARDS in patients without access to a ventilator?

"Acute Respiratory Distress Syndrome" (ARDS) is characterized by a rapid onset of widespread inflammation of the lungs. The causes are many, and one such cause might become prominent in the near ...
Dale's user avatar
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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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