2021-10-23/24/25 General

Transmission In this small study of Italian health-care workers who were tested regularly, all of the people who tested positive but were asymptomatic tested negative the very next day. The mean time for the symptomatic patients to test negative was 11 days. Pathology This preprint says they found SARS-CoV-2 antibodies in the cerebrospinal fluid of… Continue reading 2021-10-23/24/25 General

2021-10-20 General

Variants As this article says, they are starting to see a new variant in England called AY.4.2 or “Delta plus”. It is gaining ground on Delta, although slowly. It might be a little bit more contagious than Delta, but not hugely. It’s not like the huge advantage over Alpha that Delta had. Recommended Reading This… Continue reading 2021-10-20 General

2010-10-09/10/11/12 General

Mitigation Measures This article says that the US will allow fully-vaccinated Canadians to enter, starting sometime in November. “Fully-vaccinated” has not been clearly defined yet. Vaccines Novavax has published data from their Phase 3 trials in the USA and Mexico in this preprint. I wanted to be snarky and say that maybe this means that… Continue reading 2010-10-09/10/11/12 General

2021-09-10 General

Vaccines The National Advisory Committee on Immunization recommends a third shot for various types of immunocompromised people. From this tweet, using data from Public Health England: From this tweet, also using data from Public Health England (note that it’s a LOG scale!): This US CDC report says that: the effectiveness against hospitalization was 76% for… Continue reading 2021-09-10 General

2021-09-09 General

Variants A US CDC report found that COVID-19 didn’t cause more hospitalized children to go to the ICU than in pre-Delta times. Vaccines Moderna announced that they have gotten really good results (in mice) from a vaccine which combines COVID-19, influenza, and RSV. This article says that COVID-19 frequently attacks kidneys, and that it really… Continue reading 2021-09-09 General

2021-09-03 General

Vaccines This tweet has this nice graph, made with data pulled from the Public Health England Variants of Concern Technical Briefing 22. Variants This preprint from Denmark says that people who were not fully vaccinated were 2.8x times as likely to get hospitalized for Delta as for Alpha.  (For people who were fully vaccinated, there… Continue reading 2021-09-03 General

2021-08-23 General

Vaccines This Twitter thread is an excellent discussion of how to understand the “do vaccines wane” discussion. Please go read it. The US FDA today gave full approval to Pfizer, as opposed to the Emergency Use Authorization that it had given. This is important because there were entities which were not legally able to require… Continue reading 2021-08-23 General