How long does immunity to covid last?

One of the fears of many people in relation to covid has been that the immunity that develops after infection is so short lived that the infection will just keep going around and around and re-infecting everyone (until everyone is dead, I assume).

Two pieces of evidence have been presented to support this belief. The first concerns a few cases of “re-infection” that have been … Read more

Herd immunity without antibodies?

“Only a minority of people in Sweden have antibodies, so they can’t have herd immunity!”

That is the most common argument I’ve been hearing for why Sweden can’t have achieved herd immunity. This is in spite of the fact that the rates of hospitalizations and deaths have dropped continuously since the peak in April, and are now stable at basement levels.

The argument is also … Read more

Covid-19: Does Sweden have herd immunity?

UPDATE 14th November 2020: In light of the recent increase in hospitalizations and deaths during October and November in Sweden, I no longer believe that Sweden reached a state of herd immunity during spring. The text below represents my thinking on the 19th of September, when I wrote the article, and doesn’t represent my current thinking. It is clear that a significant level of population Read more

Covid-19 interview with Ben, Rob, and Robbo

A few days back I did an interview on the Ben, Rob and Robbo show about covid-19. In the interview we discuss what measures were taken in Sweden to prevent the spread of the disease, whether Sweden has now developed herd immunity, and what the role of T-cells vs antibodies is if that is the case. We also discuss whether the Swedish government intentionally “sacrificed” … Read more

Sky News interview about covid-19

I did an interview with Sky News in Australia on the 22nd of August about covid-19, my experiences from working in the Emergency Room during the last few months, and what I think about the Swedish herd immunity strategy. The complete interview can be found here.

For more of my thoughts on covid-19, see my perspective on covid-19 in Sweden and my article about … Read more