‘Let’s Be Cautious’: Pfizer, Moderna Need to Release More Data to Back Up Claims of ‘95% Effective’ Vaccines

The Most Revolutionary Act

In the U.S., all eyes are on Pfizer and Moderna. The topline efficacy results from their experimental COVID-19 vaccine trials are astounding at first glance. Pfizer says it recorded 170 COVID-19 cases (in 44,000 volunteers), with a remarkable split: 162 in the placebo group versus 8 in the vaccine group. Meanwhile Moderna says 95 of 30,000 volunteers in its ongoing trial got COVID-19: 90 on placebo versus 5 receiving the vaccine, leading both companies to claim around 95% efficacy.

Let’s put this in perspective. First, a relative risk reduction is being reported, not absolute risk reduction, which appears to be less than 1%.Second, these results refer to the trials’ primary endpoint of COVID-19 of essentially any severity, and…

View original post 205 more words

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: