2022-02-18 General

Vaccines This preprint from Israel says that a fourth dose is helpful, but not that much. The efficacy versus people who had three doses was: 30% for Pfizer; 11% for Moderna. In other words, in cohorts of N people with three doses, N people with three doses plus 1 dose of Pfizer, and N people… Continue reading 2022-02-18 General

2022-01-27 General

Pathology This study found that pregnant women were 1.77x as likely to develop preeclampsia if they got COVID-19; women who had not given birth before were 1.89x as likely. They found the risk of a preterm birth for all pregnant women with both COVID-19 and preeclampsia was 4.05x (and 6.26x for women who had never… Continue reading 2022-01-27 General

2022-01-26 General

Mitigation Measures This preprint looked at high-risk exposures and said that the risk of catching COVID-19 was: 3.02x higher if the infected person was part of your household (versus not), 2.1x higher if the transmission was indoors (versus outdoors), 2.15x higher if the interaction lasted 3 hrs or more (vs. shorter) among unvaccinated and partially-vaccinated… Continue reading 2022-01-26 General

2022-01-25 General

Long COVID This preprint says that they found four predictors which are strongly correlated with Long COVID: type 2 diabetes, SARS-CoV-2 RNA in the blood, Epstein-Barr virus in the blood, and specific autoantibodies. (Here’s an article translating the subject into lay-speak. Paywalled, sorry.) This paper also found a Long COVID signature/diagnostic, this time in age,… Continue reading 2022-01-25 General

2022-01-20 General

Transmission I found this article interesting. They modelled two air flights and got pretty good agreement with reality. On the first flight, early enough in the pandemic that people weren’t wearing masks, one infected passenger on a 12-hour flight in business class got 12 people sick. On the second flight, four infected passengers on a… Continue reading 2022-01-20 General