Coronavirus: could it be burning out after 20% of a population is infected? - The Conversation UK
Jun 29, 2020 1 min, 34 secs
On the Diamond Princess cruise ship, for example, where the virus is likely to have spread relatively freely through the air-conditioning system linking cabins, only 20% of passengers and crew were infected.

This has led to speculation about whether a population can achieve some sort of immunity to the virus with as little as 20% infected – a proportion well below the widely accepted herd immunity threshold (60-70%).

The Swedish public health authority announced in late April that the capital city, Stockholm, was “showing signs of herd immunity” – estimating that about half its population had been infected.

Hopes that the COVID-19 pandemic may end sooner than initially feared have been fuelled by speculation about “immunological dark matter”, a type of pre-existing immunity that can’t be detected with SARS-CoV-2 antibody tests.

Studies show that people infected with SARS-CoV-2 indeed have T-cells that are programmed to fight this virus.

This may lead to some level of protection against the virus – potentially explaining why some outbreaks seem to burn out well below the anticipated herd immunity threshold.

In the Italian COVID-19 epicenter in Bergamo, a town where one in four residents are pensioners, 60% of the population had antibodies by early June.

Early in the pandemic, there was much speculation about whether specific genetic receptors affected susceptibility to the SARS-CoV-2 virus.

This will likely drive contagion and cause new COVID-19 outbreaks in the weeks to come.

But this isn’t likely to be the case – young people, for example, are likely to have more acquaintances than the elderly.

Accounting for this reduces the herd immunity threshold to around 40%.

The lockdowns enforced far and wide, combined with the responsible actions of many citizens, have undoubtedly mitigated the spread of SARS-CoV-2 and saved lives.

That said, the fact that more than 20% of people have been infected in other places means that the T-cell hypothesis is unlikely to be the sole explanation either.


1. In The Last Of Us Part II, as in life, your best bet is always running away - The A.V. Club
Jul 08, 2020 # technology 2 mins, 15 secs
2. Test Drive Unlimited Solar Crown Officially Announced, Includes Full 1:1 Scale Open World - Wccftech
Jul 07, 2020 # technology 29 secs
3. Kim Kardashian West Demands Justice For Man Killed By Sacramento Cops - TMZ
Jul 11, 2020 # entertainment 30 secs
4. How bad is the Covid crisis in US care homes?
Jul 10, 2020 # breaking 2 mins, 32 secs
5. Samsung will unveil Note 20, Galaxy Z Fold 2 on Aug. 5 in virtual Unpacked - CNET
Jul 08, 2020 # politics 1 min, 21 secs
6. 'MacGyver,' 'Magnum P.I.' Boss Peter Lenkov Fired at CBS - Hollywood Reporter
Jul 07, 2020 # entertainment 1 min, 3 secs
7. Milton teen fighting for her life against COVID-19; family begs people to wear masks - Pensacola News Journal
Jul 06, 2020 # health 1 min, 57 secs
8. Presidential historian on celebrating Independence Day amid pandemic, civil unrest
Jul 04, 2020 # breaking 2 secs
9. American Student Released After 486 Days In Egyptian Prison
Jul 07, 2020 # breaking 41 secs
10. Kevin Harvick wins third Brickyard 400 after Denny Hamlin crashes late - ESPN
Jul 06, 2020 # politics 1 min, 9 secs
11. Another back-to-school COVID-19 challenge: Reeling in kids’ bedtimes - Atlanta Journal Constitution
Jul 05, 2020 # health 3 mins, 34 secs
12. 43 of 55 residents, 15 staff members in Billings care home test positive for COVID-19 - Billings Gazette
Jul 07, 2020 # health 1 min, 51 secs
13. This Sealed Copy Of Super Mario Bros. Just Sold For $114000 - Nintendo Life
Jul 11, 2020 # technology 4 mins, 18 secs
14. The 1st-ever Mars helicopter will start flying next year. Here's how. - Space.com
Jul 06, 2020 # science 1 min, 8 secs
15. Several people at massive Torch Lake July 4 party have tested positive for coronavirus - MLive.com
Jul 11, 2020 # health 57 secs
16. Trump’s attacks on mail voting are turning Republicans off absentee ballots - The Washington Post
Jul 07, 2020 # politics 3 mins, 51 secs

SUBSCRIBE

Get monthly updates and free resources.

CONNECT WITH US

© Copyright 2020 365NEWSX - All RIGHTS RESERVED