Most Popular
1500 questions
5
votes
3 answers
Does a KN95 that says 'non medical' helps to protect against COVID-19?
I saw this type of face masks on a 'building tools' store (like home depot), and on the label said, among other things in chinese and english, non medical.
In this KN95 Masks Explained mentions
These masks, like NIOSH N95 masks, provide…
I likeThatMeow
- 566
- 5
- 20
5
votes
2 answers
How accurate are dogs to detect whether a human has COVID-19?
I read on https://www.businessinsider.com/sniffer-dogs-answer-to-the-covid-19-testing-crisis-mirror-2020-4:
Medical detection dogs able to sniff 750 people an hour could help identify coronavirus cases, researchers say
How accurate are dogs to…
Franck Dernoncourt
- 10,309
- 7
- 40
- 78
5
votes
1 answer
How did COVID-19 jump the species barrier?
I am not a medical professional. I also do not have enough knowledge on medicine or biology. But I have been wondering a lot about one question in particular for some time: How did COVID-19 jump the species barrier?
I searched for the topic online…
Abrar Hossain
- 153
- 3
5
votes
1 answer
Does the damage from sun exposure outweigh the benefit of getting vitamin D?
I have read some articles where they recommend a direct exposure to the sun of about 20 to 30 minutes, others say that 10 to 15 minutes, another that 5 minutes is enough, etc. I suppose it depends on the geographic region, the seasons of the year,…
eniel.rod
- 201
- 1
- 5
5
votes
0 answers
Why does there seem to be such a big difference in covid case mortality between the USA and Europe?
At the time of writing (11 July 2020) the USA have almost 3.2 million confirmed cases of coronavirus infections, while Europe has slightly over 1.8 million with the USA passing Europe around 10 May 2020 (two months ago) at around 1.3 million cases.…
hkBst
- 159
- 5
5
votes
1 answer
Has increased Hand-washing during Coronavirus lockdown helped reduce transmission of the Common Cold & other Viruses?
One of the main preventative measures for Coronavirus currently recommended is standard hand-washing with soap and water for at least 20 seconds.
Anecdotally at least people have increased their hand-washing substantially although I haven't found a…
Dragonel
- 153
- 2
5
votes
0 answers
What's the fastest COVID-19 test available?
This video 1 minute COVID-19 test talks about a 1 minute COVID-19 testing which isn't available to the public yet. In the market and online, you can find fast COVID-19 tests which deliver the result in 10 minutes. Here in the province I live in we…
Pablo
- 1,095
- 9
- 22
5
votes
0 answers
What are the effects of repeated sub-infective doses of coronavirus?
There are experimental records and clinical observations showing that exposure to sub-infective doses of some pathogens can result in enhanced immunity to infection when exposed to an infective dose of the same pathogen later. In vitro studies show…
Walter Scott
- 51
- 2
5
votes
1 answer
Is there a standard projection (or ensemble of proyections) about whether a second wave of COVID-19 will occur?
Several countries and states are leaving or have partially left the lockdown and, with constraints, are recovering economical activity after getting hit by the covid-19 crisis.
WHO has warned that there could be a second wave (likely to occur this…
Wolf
- 151
- 3
5
votes
2 answers
Medical database with symptom frequencies
Is there a large medical database with symptom frequencies for diseases? I.e. the percentage of patients with a specific disease that have specific symptoms?
For example (numbers and symptoms made up by me):
Barrett's esophagus:
longstanding…
lordy
- 111
- 4
5
votes
2 answers
Has China announced any results from their massive (new) COVID-19 testing program in Wuhan?
About 10 days ago China announced a plan to test the entire population (~11 million) of Wuhan. And more recently they've announced testing over 1 million per day in the city. But have any results been announced? I.e. any cases found in the city…
the gods from engineering
- 5,968
- 11
- 32
5
votes
2 answers
Why is the reported number of COVID-19 deaths lower on Sundays and Mondays in the US?
I was looking at the Daily Deaths from COVID-19 from Worldometers and I noticed that the number is always lower on Sundays and Mondays.
Why is that? Am I interpreting the graphs correctly?
CuriousPaul
- 161
- 3
5
votes
1 answer
Examples of infected disinfectants?
I've read in Pommerville's (2016) Fundamentals of Microbiology (p. 314) that contrary to popular belief that disinfectants kill all germs, there are examples of disinfectants that were contaminated with germs which caused anything from a local…
the gods from engineering
- 5,968
- 11
- 32
5
votes
2 answers
Is the day-of-week variance in COVID-19 case numbers a well-established phenomenon?
Right now (April 27), the JHU data on new COVID-19 cases in the US show a very distinct weekly rhythm; reports are lowest on the weekends and peak in mid-week. This isn't at all surprising — any number of social factors would contribute to lower…
Steven Stadnicki
- 151
- 2
5
votes
2 answers
Details on molybdenum bioavailability in milk?
There have been reports of molybdenum in milk since before 1951. However, supposedly "there [is] no data on bioavailability in cow's milk" after all these years. Most sources I find claim milk contains somewhere on the order of 50 μg/L. I'm having…
Poik
- 353
- 2
- 10