# Coronavirus COVID-19 (2019-nCoV) Thread - 2021 Breaking News **URL:** https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428 **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:** 1346
### Author: ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann) #### Post date: [May 12, 2021, 4:55pm UTC](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428/1346 "2021-05-12T16:55:19Z")
> [@Melbourne](#): > > Australia has announced that border controls will not be relaxed, on the basis that vaccination does not seem to prevent transmission. Cite? I have seen nothing from the Australian authorities saying that the reason for this move is specifically because they believe vaccines are ineffective at reducing transmission. There are concerns that some vaccines are less effective _at all_ against certain mutant strains. And the virus is obviously still rampant in many parts of the world, so the Australian move is perfectly understandable. But there is a growing body of evidence that, in accord with expectation, vaccines that are effective against preventing disease are also effective at preventing transmission. Discussed in the other thread here and subsequent posts. > [@Continuing to keep masking for your own reasons](https://boards.straightdope.com/t/continuing-to-keep-masking-for-your-own-reasons/941850/20): > > This has consistently been very poorly reported in the press. It is (obviously, when you think about it) much more difficult to study relative rates of transmission from people who have been vaccinated, than to study whether vaccinated people are getting sick themselves. So we don’t know to what extent vaccination reduces transmission, especially with new strains circulating. But it is certainly likely that a vaccine that is so successful at preventing disease will also reduce transmission … --- _[View the full topic](https://boards.straightdope.com/t/coronavirus-covid-19-2019-ncov-thread-2021-breaking-news/929428)._