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The David J. Sencer CDC Museum will re-open with new visitation protocols on January 2nd, 2026. All visitors must make advanced reservations. Walk-in visits are no longer permitted.
The following information is required while making reservations:
- Visitors to provide first, middle, and last name
Visitors 18 and over will also need to submit:
- Date of birth
- Citizenship (Select U.S. or non-U.S. citizen)
- Government-issued valid (not expired) REAL ID number or passport number
Bring confirmation email(s) for museum visit.
U.S. Public Health Service Seal Mystery
ca. 1940 U.S. Public Health Service Seal removed from a PHS cutter ship.
The seal pictured above was removed from one the smokestacks of a USPHS cutter ship...
located at the Rosebank Quarantine Station on Staten Island, and brought to Atlanta.
The seal was mounted backwards on the smokestacks but no one knows why.
When ships were subject to quarantine inspection, they flew the yellow quarantine flag and stopped in the quarantine anchorage area opposite the quarantine station. Quarantine inspectors were then taken from the quarantine station to the anchored ships aboard one of the U.S. Public Health Service (USPHS) cutter ships. The Foreign Quarantine Service was transferred to CDC in 1967, and the maritime quarantine stations were closed in the late 1970s.
The seal pictured above was removed from one the smokestacks of a USPHS cutter ship located at the Rosebank Quarantine Station on Staten Island, and brought to Atlanta. Not much of mystery you say? Look closely look at the seal, it’s backwards.
It’s a mirror image of the Public Health Service seal. If you look closely at this photograph, you can see that indeed the seal was mounted backwards on the smokestacks. The picture is not backwards. The question that begs an answer is WHY? Why would the PHS seal be mounted this way on the smoke stack? Do ships have rear view mirrors or is this just an error? If you know the answer, please e-mail us.