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7 votes
2 answers
224 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
  • 73
7 votes
1 answer
417 views

How do pharmaceutical companies deal with people who received a placebo?

I would like to know what happens to the people in the vaccine studies who received a placebo. Essentially they have not been vaccinated. However, in order for the study to stay blind so that long ...
Burt's user avatar
  • 173
14 votes
4 answers
9k views

Why use a placebo in some potential COVID-19 vaccine trials?

With potential COVID-19 vaccine trials beginning around the globe, one vaccine approach is to induce the creation of antibodies in the participants. The first phase of the trial will check whether ...
pymekrolimus's user avatar
0 votes
0 answers
74 views

Effects of placebo on viral load in tests for effectiveness of a drug combination for COVID-19

I have very little background in Medicine, pardon me for that. I came across this reference recently. Loosely speaking, this study aims at testing the effect of azithromycin and hydroxychloroquin for ...
lurker's user avatar
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