Untangling the role of vitamin D3 in autism spectrum disorders https://www.tandfonline.com/doi/full/10.1080/19381980.2017.1387702 [www tandfonline com]

This seems to implicate some variety of #HPV affecting #D3 processing and also causing #ASD. However, it seems speculative ... more about correlations than proof of causation. However, I do know that some doctors recommend extra vitamin D for patients with ASD, so maybe there is something to it and this just doesn't find the proof.