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183 votes
Accepted

Do studies show that viruses are contagious?

A qualified doctor challenging the Germ Theory of Disease after 1900? Wow. This is just a smattering - just a random tasting - of the thousands - or perhaps millions - of studies showing that ...
Oddthinking's user avatar
  • 142k
126 votes
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Was the Brazilian Zika virus outbreak centered in a place where GMO mosquitoes were released?

Quick summary: The first cases in Brazil were nearly 500km from the GM mosquito testing areas, the other side of a state larger than Spain Brazil wasn't even the first place this particularly ...
user56reinstatemonica8's user avatar
95 votes
Accepted

Are vaccinated children significantly less healthy than the unvaccinated, as recent study claims?

Almost all studies in this arena are correlative-based and not causation-based, so that I would take them all with a grain of salt. I would all suggest that Weiler and Thomas (2020) omit some ...
If you do not know- just GIS's user avatar
68 votes
Accepted

Is the Zika virus a serious threat?

The best summary is probably to quote from the WHO director general Margaret Chan's statement on announcing that zika had been declared a "Public Health Emergency of International Concern": The ...
user56reinstatemonica8's user avatar
43 votes

Are vaccinated children significantly less healthy than the unvaccinated, as recent study claims?

David Gorski has some (updated) comments about the methodology of the study such as: The authors claim that RIOV “reflects the total number of billed office visits per condition per group, reflecting ...
Dolphin 613 Motorboat's user avatar
42 votes
Accepted

Is "Syphilis: All of these men have it" a WWII propaganda poster?

A google search for "All of these men have it" "Stay away from dance halls" mainly got web 2.0 user generated content websites such as reddit and pinterest. I came across a thesis, but it gave a ...
Golden Cuy's user avatar
35 votes

Do fevers caused by infection not exceed 105 °F (40.6 °C)?

The claim is false, as evidenced by Prospective Evaluation of the Risk of Serious Bacterial Infection in Children Who Present to the Emergency Department With Hyperpyrexia (Temperature of 106°F or ...
DavePhD's user avatar
  • 107k
27 votes

Are vaccinated children significantly less healthy than the unvaccinated, as recent study claims?

It is worth noting that almost all of the conditions listed in the chart, unless they are unusually severe, do not need professional medical intervention. Skin rashes, coughs, minor to moderate asthma,...
Peter - Reinstate Monica's user avatar
21 votes

In February 2020, did Tencent release accurate statistics for the Wuhan coronavirus that were 10 times the official figures?

The Tencent screenshot is almost certainly a hoax, for the simple reason that such screenshots are extremely easy to fake. For example, here's how easy it is to get a "screenshot" of the New York ...
krock's user avatar
  • 319
19 votes
Accepted

Is there a dramatic decrease in the number of diagnoses of noninfectious diseases?

That's true. It is of course difficult to pinpoint any number for all diseases and all countries, but is not just an anecdotal observation from your local oncology section: In France, "the delay ...
LangLаngС's user avatar
  • 44.2k
19 votes
Accepted

To what degree do facemasks protect against COVID-19?

Regarding the bounty, which asks a somewhat broad question: I still see comments in social media where people claim masks are ineffective. Has new data or research come out? Yes. There's a Dec 18 ...
Dolphin 613 Motorboat's user avatar
13 votes

Is Lyme disease a global pandemic?

TL;DR summary: There are indeed varying definitions of a pandemic; some emphasize (or even require) human-to-human transmission and some don't. It's difficult to apply a definition that emphasizes ...
Dolphin 613 Motorboat's user avatar
8 votes

To what degree do facemasks protect against COVID-19?

We don't know exact numbers. As of July 17, 2020, international public health agencies have published no data regarding percentage reduction of transmission rates for Sars-COV-2 when masks are ...
Dave Sherohman's user avatar
8 votes
Accepted

Are 40% of the oceans' bacteria killed by viruses every day?

According to Bacteriophage Distributions and Temporal Variability in the Ocean’s Interior mBio Nov/Dec 2017 Volume 8, e01903-17: Phages have been shown to kill hosts at rates of up to 20 to 40% of ...
DavePhD's user avatar
  • 107k
8 votes
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Is catnip ten times more effective at repelling mosquitoes than DEET?

First, it is important to understand the terminology being used. There is the plant catnip. From the plant catnip, catnip essential oil can be obtained by steam distillation. Only a tiny fraction ...
DavePhD's user avatar
  • 107k
8 votes

Can the BCG vaccine cure type 1 diabetes?

I work in Diabetes research in the UK and Can find no evidence to support the wild claims in the paper, press release and press reports. Sadly hidden away in a table in supplementary data is the fact ...
Andrew Hattersley's user avatar
7 votes
Accepted

Do antibiotic resistant infections kill 700,000 people a year?

These estimates are worldwide, with this being the source (AMR = AntiMicrobial Resistance): Antimicrobial Resistance: Tackling a crisis for the health and wealth of nations The 700k number was ...
Laurel's user avatar
  • 31.2k
7 votes

Do antibiotics weaken your immune system?

How much antibiotics affect gut flora is open subject, there are studies showing there is long lasting negative effect. Eg. "Gut microbiota disturbance during antibiotic therapy: a multi-omic approach"...
vartec's user avatar
  • 26.7k
6 votes

Was COVID-19 in Italy by September 2019?

I don't have the immunology expertise to analyze this particular study (e.g. in re cross-reactivity), but I'll just note when it come to antibodies, results are harder to interpret than for PCR tests, ...
Dolphin 613 Motorboat's user avatar
5 votes

Is the Zika virus a serious threat?

So the questions are: Is the Zika virus "relatively new"? From WHO.int: Zika virus is an emerging mosquito-borne virus that was first identified in Uganda in 1947 in rhesus monkeys ...
Tim's user avatar
  • 3,865
4 votes

To what degree do facemasks protect against COVID-19?

WTHR did a fact check on this image in May 2020: “CDC can’t confirm the accuracy of the numbers reflected in this image,” they said in a statement. “Currently we are not finding any data that can ...
Acccumulation's user avatar
4 votes

In February 2020, did Tencent release accurate statistics for the Wuhan coronavirus that were 10 times the official figures?

Tencent denied those figures were ever published on their site. And there's seemingly no corroborating evidence besides that screenshot: The screenshot was first picked up by NTDTV, a U.S.-based, ...
Dolphin 613 Motorboat's user avatar
4 votes

Do antibiotics weaken your immune system?

Antibiotics are designed to either kill or stop the growth of bacteria by targeting specific traits/functions of the bacteria (bacterial cells are prokaryotes) and not to target eukaryotic cells (...
Ebbinghaus's user avatar
4 votes
Accepted

Does stopping antibiotics early increase risk of antibiotic-resistant bacteria spreading?

Issue: Whether stopping a course of antibiotics earlier will increase the risk and spread of resistant disease causing bacteria in the body? Evidence: Traditional evidence pointed out that early ...
pericles316's user avatar
  • 22.7k
3 votes

Is the Zika virus a serious threat?

Now that two years have passed since January 2016, let's review again what scientists have learned about microcephaly and Zika. In October 2018, Regina Grazel and Pamela Harris-Haman write in Advances ...
elliot svensson's user avatar
3 votes
Accepted

Can teasel root cure Lyme?

In short: There have been no clinical trials. In December 2016, an article was published in a journal called Alternative and Complementary Therapies. That is normally a red flag, but this one had a ...
Oddthinking's user avatar
  • 142k
3 votes

Can the BCG vaccine cure type 1 diabetes?

No. The study doesn't claim that and the results are very weak anyway This story is an interesting case where the headlines exaggerated the claims and the claims were far weaker than many supposed ...
matt_black's user avatar
  • 56.2k
3 votes

Do young people with no previous pathologies, end up admitted with bilateral pneumonia and serious breathing difficulties due Covid-19?

COVID-19 is so new that there are a lot of things that are uncertain. There is some anecdotal evidence that young people can develop significant complication. For example, this article in the ...
ventsyv's user avatar
  • 7,124
3 votes

During the disintegration of the Soviet Union, was there a surge of child allergies in Tajikistan because people hoarded soap?

The June 1990 Atlantic article Inside the Collapsing Soviet Economy says: Soviet TV and newspapers, liberated by glasnost, are filled with stories about these rising prices and their consequences. In ...
DavePhD's user avatar
  • 107k
3 votes

Can avoiding certain foods reduce inflammation? (Gluten, sugar...)

There are actually two possible answers here. One is simply answering the title and a different answer regards the content of the question. That restricting certain types of food can reduce bowel ...
FluidCode's user avatar
  • 737

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