Almost nowhere.
The ADHA's Practice Act Overview (8.24.26 update) lists vaccine administration as permitted dental hygienist scope in only 3 of the 51 jurisdictions it tracks: the District of Columbia, Oklahoma, and West Virginia.
The other 48 don't list it at all.
It's one of the least common functions on the whole chart — and, unlike anesthesia or sealants, a genuinely emerging one.
Always confirm your state's current rule with its dental board.
The short answer
In the large majority of the country, no — the ADHA's Practice Act Overview (8.24.26 update) does not list vaccine administration as a permitted function for dental hygienists.
Only three jurisdictions show a listed supervision level for it: the District of Columbia, Oklahoma, and West Virginia.
That makes vaccines one of the most restricted functions on the entire 22-function chart — only Botox is listed in as few jurisdictions, and only Dermal Fillers (listed in none) is narrower still, though the vaccine and Botox lists barely overlap.
Informational only — confirm with your state board
Where it's listed, and what the supervision level requires
The chart lists three jurisdictions.
The District of Columbia and West Virginia both list Direct supervision — the dentist needs to be present. Oklahoma lists General supervision — the dentist authorizes the service beforehand but need not be present.
So even where vaccine administration is listed at all, two of the three jurisdictions require the dentist in the room, and none of the three list it as a Direct Access function a hygienist could provide on their own determination.
Vaccine administration supervision, by state
Quoting the chart as written, here is the supervision level listed for every jurisdiction.
Forty-eight of the 51 show no listed level for vaccine administration at all — one of the shortest "listed" columns on the entire chart.
| State | Vaccine administration supervision level (ADHA chart) |
|---|---|
| Alabama | - |
| Alaska | - |
| Arizona | - |
| Arkansas | - |
| California | - |
| Colorado | - |
| Connecticut | - |
| Delaware | - |
| District of Columbia | D |
| Florida | - |
| Georgia | - |
| Hawaii | - |
| Idaho | - |
| Illinois | - |
| Indiana | - |
| Iowa | - |
| Kansas | - |
| Kentucky | - |
| Louisiana | - |
| Maine | - |
| Maryland | - |
| Massachusetts | - |
| Michigan | - |
| Minnesota | - |
| Mississippi | - |
| Missouri | - |
| Montana | - |
| Nebraska | - |
| Nevada | - |
| New Hampshire | - |
| New Jersey | - |
| New Mexico | - |
| New York | - |
| North Carolina | - |
| North Dakota | - |
| Ohio | - |
| Oklahoma | G |
| Oregon | - |
| Pennsylvania | - |
| Rhode Island | - |
| South Carolina | - |
| South Dakota | - |
| Tennessee | - |
| Texas | - |
| Utah | - |
| Vermont | - |
| Virginia | - |
| Washington | - |
| West Virginia | D |
| Wisconsin | - |
| Wyoming | - |
Source: ADHA Dental Hygiene Practice Act Overview, 8.24.26 update.
A "-" means the function isn't listed as permitted — not that it's prohibited.
How this compares to the other functions on this chart
Vaccines sit at the restrictive end of this chart, matched almost exactly by Botox, which is also listed in only 3 of the 51 jurisdictions — though a different three (Arizona, Kansas, and Oklahoma; Oklahoma is the only jurisdiction where both functions are listed).
The nearest neighbors this site has covered are suture placement, listed in just 4 of the 51, and prescriptive authority, listed in 9. Dermal Fillers, a separate row on the same chart, is more restricted still — unlisted in all 51.
The core clinical functions run far broader: local anesthesia is unlisted in only 2 of the 51, nitrous oxide in 17, and soft tissue curettage in 8.
Don't assume permission for one function on this chart implies permission for another — the ADHA lists each one separately, and this article covers vaccines specifically.
Why this is one of the newest, least-settled functions on the chart
The chart's near-empty column for this function is itself the evidence: with only 3 of 51 jurisdictions listing any supervision level for vaccine administration, this reads as an emerging area of hygienist scope rather than an established one — closer in shape to Botox and Dermal Fillers than to core clinical functions like scaling or x-rays, both listed in all 51.
This is a snapshot dated to the chart's 8.24.26 update, not a forecast.
Scope-of-practice law changes state by state, so don't treat today's list as permanent — but confirm any change directly with your state dental board rather than relying on a general article, including this one.
Confirm your state's exact rule
A "-" on this chart means vaccine administration isn't listed as a permitted function in that state's row — it does not mean the state prohibits it outright, only that the chart doesn't record an authorized supervision level there.
Even in the three jurisdictions where it is listed, confirm exactly what's required in practice, since practice acts and their interpretation change over time.
Start with your state dental board's practice act, and treat this chart and this article as a snapshot dated to 8.24.26 rather than a permanent rule.
For the rest of what a hygienist can and can't do, see our full breakdown of hygienist scope limits.
This article is general information, not legal or medical advice. Scope-of-practice and supervision rules vary by state and change over time — confirm current requirements with your state dental board.