Pathology This case studies paper says that they saw four pediatric appendicitis cases with COVID-19. Now, four cases is not many, but it was almost a quarter of their appendicitis patients, while the rate overall was only 8%. They also note that it’s reasonable to expect that COVID-19 could infect the appendix, as it also… Continue reading 2022-02-08 General
Category: Variants
2022-02-05/06/07 General
Long COVID This paper and this preprint says that people who have recovered from a COVID-19 infection are at greater risk from heart complications afterwards. The first study followed patients for the next year and found that patients had the following elevated risk of any heart issue in the following year compared to non-infected controls:… Continue reading 2022-02-05/06/07 General
2022-02-04 General
Vaccines This article reports that NACI now says that you should wait three months after getting COVID-19 before you get a booster. It’s not bad, it’s just that three months will give you better protection, they think. Note that they don’t actually have any data on the COVID-19 booster specifically, they are basing that advice… Continue reading 2022-02-04 General
2022-02-03 General
Variants This is really strange. This article says that in New York City and also in some places in California, they have been seeing strange variants in their wastewater surveillance for the past year — variants they haven’t seen in any people. It wasn’t clear, but I think there are three main lineages (classed as… Continue reading 2022-02-03 General
2022-02-02 General
Happy Twosday! Transmission This article reports on the results of the first human challenge trial (meaning: deliberate infection) of COVID Classic. You’re going WAIT WHAT? HOW COULD THAT POSSIBLY PASS ETHICS REVIEW? This happened in the UK (so different ethics boards), and they did work hard to minimize potential harm to the subjects (like making… Continue reading 2022-02-02 General
2022-01-29/30/31 General
Vaccines There’s a great, long Twitter thread which looks at the effect of vaccines. (It summarizes a paywalled article, if you want to see the whole thing.) One of the elements which I found striking was how the risk of COVID-19 relative to the flu has dropped over time. In mid 2020, the infection fatality… Continue reading 2022-01-29/30/31 General
2022-01-28 General
Variants I don’t like to warn about variants before there’s data. (I didn’t sound alarms about Mu, for example.) Well, I think it’s time to talk about BA.2 — an Omicron variant. (The Omicron variant which sprouted up first is BA.1.) BA.2 doesn’t look like it is lot worse than BA.1 — not like Delta… Continue reading 2022-01-28 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
2022-01-22/23/24 General
Weather This article says that the amount of lightning decreased during the pandemic because of less fossil fuel burning and hence fewer aerosols. Vaccines This article says that in extremely rare circumstances, people report Long COVID symptoms after vaccination. Variants This preprint says that the risk of hospitalization from Omicron is 25% that of Delta,… Continue reading 2022-01-22/23/24 General
2022-01-18 General
Variants This preprint says that a Delta infection (by itself) does provide some protection against Omicron (in mice and test tubes), but an Omicron infection (by itself) does not provide good protection against Delta. However, if you have an Omicron or Delta infection plus a vaccine, then you get good protection against the other variant.… Continue reading 2022-01-18 General