This endpoint returns a list of all available sub_themes and hyperlinks to their corresponding detail view.

The sub_theme field is positioned 1 step below theme.

A sub_theme is a topical subgroup e.g. respiratory

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "name": "childhood-vaccines",
        "link": "https://api.ukhsa-dashboard.data.gov.uk/themes/immunisation/sub_themes/childhood-vaccines?format=api"
    }
]