I have been very quiet recently, with my last post in May. Many things have happened since, so regular blogging was not my priority.
In the meantime, I have written a new piece for The Conversation, on measles and vaccination. All The Conversation articles are very short (a limit of 800 words), so it is not easy to put in all caveats and mathsy detail. Hopefully, I will find time to explain in more detail here (or on Substack) in a not-too-distant future.