# 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:** 3121
**Author:** ![PastTense](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pasttense/32/14550_2.png) [@PastTense](https://boards.straightdope.com/u/PastTense)\ **Post date:** [November 28, 2021, 12:57am UTC](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428/3121 "2021-11-28T00:57:45Z")
> [@eschrodinger](#): > > Note, if this is the case, then it would be more contagious than **delta** , which was already more contagious than the original. Delta is already very contagious. See thread for support for this idea: > [@How can this new omicron strain have such a high r0 value](https://boards.straightdope.com/t/how-can-this-new-omicron-strain-have-such-a-high-r0-value/954988): > > it was just upgraded to variant of concern. it’s more infectious than delta which had an r0 or 6-7. is there an upper limit on how contagious covid can be? this new strain is supposedly up there with the most infectious diseases that exist like measles. how does a disease go from novel to possibly the highest r0 of any disease in earth so fast? why didn’t other infectious diseases evolve so fast? smallpox never had an r0 this high. --- _[View the full topic](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428)._