Irish coins designed by Percy Metcalfe
the coins used in Ireland between 1928 and 2000 (when the Euro became standard here). Beautiful, classic designs
Asymptomatic SARS-CoV-2 infections: a living systematic review and meta-analysis | medRxiv
‘The overall estimate of the proportion of people who become infected with SARS-CoV-2 and remain asymptomatic throughout infection was 20% (95% CI 17-25) with a prediction interval of 3-67% in 79 studies that addressed this review question.’ — note, asymptomatic throughout infection, not including presymptomatic then symptomatic. (via Andrew Flood)
(tags: via:andrewflood covid-19 asymptomatic papers preprints medicine)
Explanation of the “cases rising but deaths staying static” COVID-19 phenomenon
Featuring lots of graphs and data. This is great
Long-Haulers Are Redefining COVID-19 – The Atlantic
god, this disease is awful
(tags: long-haulers covid-19 health medicine ed-yong)
Richard Neher on Twitter: “What happens to #COVID19 when winter returns”
tl;dr: ‘this suggests controlling #SARSCoV2 in the Northern Hemisphere will become a lot harder over the next six months and things might spiral out of control quickly.’
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The incubation period distribution may be modelled with a lognormal distribution with pooled mu and sigma parameters (95% CIs) of 1.63 (95% CI 1.51 to 1.75) and 0.50 (95% CI 0.46 to 0.55), respectively. The corresponding mean (95% CIs) was 5.8 (95% CI 5.0 to 6.7) days. It should be noted that uncertainty increases towards the tail of the distribution: the pooled parameter estimates (95% CIs) resulted in a median incubation period of 5.1 (95% CI 4.5 to 5.8) days, whereas the 95th percentile was 11.7 (95% CI 9.7 to 14.2) days.
(tags: covid-19 incubation diseases sars-cov-2 papers bmj)