herd immunity

Did I catch Covid from a naked-rumped tomb bat?

8 May 2021 9:00 am

Laikipia Until I promised to slaughter a fat-tailed sheep with a goat thrown in for a feast, the farm cowhands…

Has this Brazilian city reached herd immunity without lockdown?

26 August 2020 11:32 pm

Throughout the Covid crisis, the international response to the disease has rested on a simple assumption: that none of us…

swedish model

Trump picks a Swedish model

20 May 2020 5:12 am

Donald Trump is moving toward a Swedish model. His vitality sustained by regular doses of hydroxychloroquine, President Prophylaxis is pushing…

Herd immunity may only need 10-20 per cent of people to be infected

5 May 2020 2:07 am

Since mid-March there has been an assumption that herd immunity against Covid-19 would not be achieved until around 60 per…


Massachusetts study finds a third of sample have COVID-19 antibodies

20 April 2020 11:44 pm

Last week I reported here a Stanford University study which found that infection with SARS-CoV-2 — the virus which causes COVID-19…