Thank you for your comments and questions. There're indeed many other questions I did not cover in this article; otherwise it'd be difficult to stop writing haha. But here're my answers:

- I believe so. The studies I linked to in this article examined both hospitalized and non-hospitalized patients.

- That's an interesting question. Looking back at Rahmati et al.'s meta-analysis, all but one study was conducted before 2022, so it's likely that earlier Covid strains were investigated.

- Risks are often synergistic, as far as I know. So those with genetic risk factors are likely to face a higher risk of dementia if Covid enters the equation.

- After I published the article, I came across a 2024 study showing that Covid vaccine does reduce the risk of hospitalization for multiple diseases, including dementia.