The history of the Smallpox Hospital is also the history of smallpox.

Built in 1856 to isolate and treat people with smallpox, the hospital was part of New York’s effort to control a disease that repeatedly swept through the city. The building later became a nursing school. As vaccination transformed public health and smallpox was eradicated, the building lost its purpose and was eventually abandoned.

The disease is gone. The building remains.

1796–1856

The vaccine

1796 The disease

Edward Jenner tests cowpox against smallpox

Jenner inoculates eight-year-old James Phipps with cowpox. Two months later, Phipps is exposed to smallpox and does not become ill.

Jenner-era vaccination print

Jenner performing his first smallpox vaccination on a child in 1796, Science History Images

1801 The disease

New York begins vaccinating

New York City begins a program of smallpox vaccination. The vaccine offers a way to prevent the disease, but outbreaks continue.

1828 The building

New York acquires Blackwell's Island

New York City purchases Blackwell's Island for $32,000 and begins developing it as a site for institutions, including hospitals and prisons.

Deep dive
Historic view of Blackwell's Island, or the island today

New York Public Library

The island · Minnahanonck to Roosevelt

The island the city used for the institutions it did not want on Manhattan.

A penitentiary, an asylum, an almshouse, and hospitals for contagious disease — and, since 1969, a residential neighborhood with a tram, a subway stop, and Four Freedoms Park. The ruin stands at its southern end.

See the island's history
1850 The disease

Smallpox remains a major cause of death

A large unvaccinated population leaves New York vulnerable to recurring outbreaks. In 1850, smallpox accounts for 25.4 of every 1,000 deaths in the city. A New York State report describes the city's smallpox facilities as “a pile of poor wooden outhouses on the banks of the river.”

1854 The building

Construction begins

New York begins construction of a permanent smallpox hospital on Blackwell's Island, designed by James Renwick Jr. The hospital is the first major U.S. hospital built specifically for the treatment and isolation of people with smallpox. Prisoners on the island quarry, cut, dress, and lay the stone.

Deep dive
Renwick portrait

Library of Congress

The architect · 1818—1895

He was designing St. Patrick's Cathedral at the same time.

Renwick was engaged to design the cathedral in 1853, one year before ground was broken here. Grace Church, the Smithsonian Institution Building, the Corcoran Gallery, and Vassar were his as well.

See Renwick’s history
1856 The building

Smallpox Hospital opens

The hospital is completed on December 18 at a cost of approximately $38,000. Its location, separated from Manhattan by the East River, allows the city to isolate people with smallpox from the rest of the population.

1857–1921

The hospital and nursing school

Nurses of the training school outside the hospital
Nurses of the training school outside the building, New York City Municipal Archives
1857 The building

The old smallpox hospital burns

The wooden buildings previously used for smallpox patients are destroyed by fire. Patients move into the new stone hospital on January 3.

1875 The building

The hospital becomes Riverside Hospital

The Board of Health assumes control of the hospital and renames it Riverside Hospital. Its patients now include people with diseases other than smallpox.

1886 The building

The building becomes a nursing school

Riverside Hospital closes and its patients move to North Brother Island. The stone building is stripped and rebuilt as the Home for Nurses of Maternity and Charity Hospital Training School.

1895 The building

James Renwick Jr. dies

Renwick dies on June 23. He is buried at Green-Wood Cemetery in Brooklyn.

1903–05 The building

The nursing school expands

New wings add classrooms, dormitories, and training wards. The south wing is designed by York & Sawyer and completed in 1904. The north wing, designed by Renwick, Aspinwall & Owen, follows in 1905.

1905 The disease

The Supreme Court upholds compulsory vaccination

In Jacobson v. Massachusetts, the U.S. Supreme Court upholds the authority of states to require smallpox vaccination to protect public health.

1921–1947

The island changes

1921 The building

Blackwell's Island becomes Welfare Island

The city renames Blackwell's Island Welfare Island.

1947–1972

The disease recedes

1947 The disease

Smallpox returns to New York

A traveler arrives in Manhattan carrying smallpox. Twelve people become ill and two die. The city vaccinates approximately 6.35 million people in less than a month.

1949 The disease

The last U.S. case

The United States records its last naturally occurring case of smallpox.

1956 The building

The building is abandoned

The nursing school moves elsewhere and the building is abandoned. The city begins depositing landfill south of the hospital. Over the next three decades, the island grows by approximately five acres.

1959 The disease

The world commits to eradication

The World Health Assembly adopts a resolution calling for the worldwide eradication of smallpox.

1960s The building

The ruin begins to deteriorate

Water enters through the roof. Plaster falls, windows break, and vegetation takes hold. The Landmarks Preservation Commission identifies the building among the island structures worthy of preservation.

1967 The disease

WHO launches an intensified eradication campaign

The World Health Organization launches its Intensified Smallpox Eradication Programme under Donald A. Henderson. The campaign expands vaccination, case finding, outbreak response, and international cooperation.

1970–71 The building

The building is stabilized, then opened to the sky

New York State hires architect Giorgio Cavaglieri to stabilize seven historic structures on the island. The Smallpox Hospital's roof is removed around 1971, leaving the stone shell open to the sky.

1972 The building

The ruin enters the National Register

The Smallpox Hospital is listed on the National Register of Historic Places.

1947 mass vaccination queue, New York City

New Yorkers waiting to receive their free smallpox vaccinations outside Morrisania Hospital, Ossie Leviness

1973–Today

The ruin

1973 The building

Welfare Island becomes Roosevelt Island

The island is renamed Roosevelt Island in honor of Franklin D. Roosevelt.

1975 The disease

The last person to survive variola major

Rahima Banu, a three-year-old girl in Bangladesh, becomes the last person known to contract variola major, the more severe form of smallpox. She survives.

1976 The building

New York City designates the ruin a landmark

The Landmarks Preservation Commission designates the Smallpox Hospital a New York City Landmark.

The building unroofed, 1970s

Historic American Buildings Survey

1977 The disease

The last naturally occurring case

Ali Maow Maalin, a hospital cook in Somalia, becomes the last person known to contract naturally occurring smallpox. He survives.

1978 The disease

The last recorded death

Janet Parker, a medical photographer in Birmingham, England, dies after exposure to smallpox virus in a laboratory accident. She is the last known person to die from smallpox.

1980

Smallpox is declared eradicated. The World Health Assembly makes the declaration on May 8, 1980.

The ruin enters the New York State Register. The same year, the Smallpox Hospital is entered on the State Register of Historic Places.

Cover of World Health magazine, May 1980
World Health, May 1980
1995 The building

The walls are illuminated

Friends of Roosevelt Island Landmarks installs floodlights to illuminate the ruin.

2007 The building

A section of the wall collapses

A winter storm causes a large section of the north wall to collapse. Emergency shoring and bracing are installed.

2015 The building

A new structural survey begins

New York State Parks supports a structural survey by Walter B. Melvin Architects to assess the condition of the ruin.

2020 The disease

New York faces another epidemic

A new pandemic fills hospitals across New York City. Healthcare workers confront a disease for which there is no established treatment or vaccine.

Today The building

The ruin

The Smallpox Hospital remains fenced off and closed to the public.

Research and sources

Research for this timeline included the Roosevelt Island Historical Society, the Roosevelt Island Operating Corporation, the New York Public Library, the New York City Municipal Archives, the Library of Congress, and the World Health Organization.

  • Katherine Greider, research on Roosevelt Island, Louis Kahn, and Four Freedoms State Park, conducted for the Four Freedoms Park Conservancy, 2013–2017.
  • Stanley M. Aronson and Lucile Newman, Smallpox in the Americas, 1492 to 1815: Contagion and Controversy. Brown University.
  • National Geographic, Conquered Killer.
  • World Health Organization, History of smallpox vaccination. World Health Organization.