The Novavax vaccine — which had ~90% efficacy against B.1.1.7 — had only 60% efficacy against HIV-negative patients, most of whom had B.1.351. As a side effect, the study showed that having had COVID Classic didn’t give you any protection against B.1.351. Yikes.
There is a report that, while rare, some delayed (5 days or more later!) skin reactions at the injection site have happened — itchy, swollen, rashes, etc. Not dangerous, and they resolve in 4-5 days, but apparently annoying. There’s some speculation they are Arthus reactions. Antihistamines (like Benadryl) seem to help; maybe use Tylenol and/or ice. Here’s an example:
Hong Kong started testing wastewater at the apartment block level, and then test the hell out of residents of apartment buildings with COVID in their sewage. They broke more than fifty transmission chains that way.
Buried in this article about how COVID-19 can hurt the heart, even in people with mild COVID19 symptoms, is an almost throwaway line that many cardiologists think that might contribute to Long COVID.
Yet another article says that B.1.1.7 is moe