# Coronavirus COVID-19 (2019-nCoV) Thread - 2021 Breaking News **URL:** \ **Category:** The Quarantine Zone\ **Tags:** covid-quarantine\ **Created:** [January 1, 2021, 8:03am UTC](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428 "2021-01-01T08:03:30Z")\ **Posts on this page:** 1\ **Showing post:** 1269
**Author:** ![puzzlegal](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/puzzlegal/32/3827_2.png) [@puzzlegal](https://boards.straightdope.com/u/puzzlegal)\ **Post date:** [April 30, 2021, 12:57am UTC](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428/1269 "2021-04-30T00:57:35Z")
We had a thread on that a while ago, and I did a bunch of research at the time. Here’s what i posted. Unfortunately, the NEJM has moved the graphs so they no longer show up nicely in the thread, but you can still see them if you open the article. > [@How immune am I?](https://boards.straightdope.com/t/how-immune-am-i/939691/9): > > This article reports on the results of a few different studies, including Pfizer’s preliminary data and real world data from Israeli HMOs. an HMO found no decrease in the odds of developing covid from 5-12 days after the first shot, but found a 33% decrease 14 days after the first shot. Another study found a 60% decrease in risk after 14 days. A small study where they actually drew blood and looked at antibody levels found that after a week, only 1% of people had enough antibodies to matter… TL;DR you get almost no immunity right away. You develop a lot of immunity about two weeks after the first jab, and the additional benefit of the second jab is mostly accrued within a week. --- _[View the full topic](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428)._