Information provided by: Diana Nelson and other sources
| "In case you ever wondered why a large number of your ancestors disappeared during a certain period in history, this might help. Epidemics have always had a great influence on people - and thus influencing, as well, the genealogists trying to trace them. Many cases of people disappearing from records can be traced to dying during an epidemic or moving away from the affected area. Some of the major epidemics in the United States are listed below:" | ![]() The agony of entire families besieged with a dreaded disease, and the benevolence of some neighbors in aid. |
| Years | Area | Epidemic | Notes |
|---|---|---|---|
| 1628-1631 | New England | Small Pox | |
| 1638 | New England | Small Pox & Spotted Fever | |
| 1648-1649 | Massachusetts Bay Colony | Small Pox | |
| 1657-1658 | Boston | Measles | |
| 1659 | Massachusetts Bay Colony | Throat Distemper | |
| 1677-1678 | Charlestown & Boston | Small Pox | |
| 1679-1680 | Virginia | Small Pox | |
| 1687 | Boston | Measles | |
| 1689-1690 | New England | Small Pox | |
| 1690 | New York | Yellow Fever | |
| 1693 | Boston | Yellow Fever | |
| 1696 | Jamestown, VA | Small Pox | |
| 1699 | Charleston & Philadelphia | Yellow Fever | |
| Mar 1699 | South Carolina | Small Pox | |
| 1702 | New York | Yellow Fever | |
| 1702-1703 | Boston | Small Pox | |
| 1706 | Charleston | Yellow Fever | |
| 1711-1712 | South Carolina | Small Pox | |
| 1713 | Boston | Measles | |
| 1715-1725 | Most of the Colonies | Small Pox | |
| 1721 | Boston | Small Pox | |
| 1723-1730 | Boston, New York, Philadelphia | Small Pox | |
| 1729 | Boston | Measles | |
| 1732 | Charleston, New York | Yellow Fever | |
| 1732-1733 | Worldwide | Influenza | |
| 1735-1740 | New England | Small Pox, Scarlet Fever, Diphtheria | |
| 1734 | Virginia | Yellow Fever | |
| 1738 | South Carolina | Small Pox | |
| 1739-1740 | Boston | Measles | |
| 1741 | Virginia | Yellow Fever | |
| 1747 | CT, NY, PA, SC | Measles | |
| 1752 | Boston | Small Pox | |
| 1759 | North America | Measles | Areas inhabited by white people |
| 1760-1761 | CT, RI, MA, Charleston | Small Pox | |
| 1761 | North America, West Indies | Influenza | |
| 1762 | Philadelphia | Yellow Fever | |
| 1763 | Philadelphia | Throat Distemper | |
| 1764 | Boston | Small Pox | |
| 1769 | New York | Throat Distemper | |
| 1772 | North America | Measles | |
| 1772-1774 | New England | Small Pox | |
| 1775 | North America | Epidemic Unknown | Especially hard in NE |
| 1775-1776 | Worldwide | Influenza | One of the worst epidemics |
| 1776 | Boston | Small Pox | |
| 1778 | Boston | Small Pox | |
| 1783 | Dover DE | Bilious Disorder | Extremely Fatal |
| 1788 | Philadelphia, New York | Measles | |
| 1792 | Boston | Small Pox | |
| 1793 | VT | "Putrid" Fever, Influenza | |
| 1793 | VA | Influenza | Killed 500 in 5 counties in 4 weeks |
| 1793 | Philadelphia | Yellow Fever | More than 4,000 died |
| 1793 | Harrisburg PA | Unknown | Many unexplained deaths |
| 1793 | Middletown PA | Unknown | Many unexplained deaths |
| 1794 | Philadelphia | Yellow Fever | |
| 1796-1797 | Philadelphia | Yellow Fever | |
| 1798 | Philadelphia | Yellow Fever | One of the worst |
| 1803 | New York | Yellow Fever | |
| 1811-1812 | Reading County and other parts of VT | Petechial or Spotted Fever | Many deaths among children |
| 1820-1823 | Nationwide | "Fever" | Start at Schuylkill River and spreads |
| 1831-1832 | Nationwide | Asiatic Cholera | Brought by English emigrants |
| 1832 | New York City, New Orleans | Cholera | NYC July-Aug, Over 3,000 people died; NO Oct, 4,340 died |
| 1833 | Columbus OH | Cholera | |
| 1834 | New York City | Cholera | |
| 1837 | Philadelphia | Typhus | |
| 1841 | Nationwide | Yellow Fever | Especially severe in the South |
| 1847 | New Orleans | Yellow Fever | |
| 1847-1848 | Worldwide | Influenza | |
| 1848-1849 | North America | Cholera | New York City, more than 5,000 deaths |
| 1849 | New York | Cholera | |
| 1849-1850 | New Orleans | Cholera | 3,000 deaths |
| 1850-1851 | North America | Influenza | |
| 1851 | Coles County IL, The Great Plains, MO | Cholera | |
| 1852 | Nationwide | Yellow Fever | New Orleans - 8,000 die in summer |
| 1853 | New Orleans | Yellow Fever | Killed 7,790 |
| 1855 | Nationwide | Yellow Fever | |
| 1857-1859 | Worldwide | Influenza | One of the greatest epidemics |
| 1860-1861 | PA | Small Pox | |
| 1865-1873 | Philadelphia, New York, Boston, New Orleans, Baltimore, Memphis, Washington DC | Small Pox, a series of recurring epidemics of Cholera, Typhus, Typhoid, Scarlet Fever, Yellow Fever | 1867 New Orleans, 3,093 perished |
| 1873-1875 | North America, Europe | Influenza | |
| 1878 | Southern States | Yellow Fever | Over 13,000 people died in lower Mississippi Valley |
| 1885 | Plymouth PA | Typhoid | |
| 1886 | Jacksonville FL | Yellow Fever | |
| 1900 | Galveston TX | Cholera | |
| 1902 | Alaska | Measles | |
| 1905 | New Orleans | Yellow Fever | Last U.S. outbreak |
| 1916 | Nationwide | Polio, Infantile Paralysis | Over 7,000 deaths and 27,363 cases |
| 1918 | Nationwide | Spanish Influenza | More people hospitalized in WWI from this epidemic than wounds. US Army training camps became death camps, with 80% death rate in some camps. Killed over 500,000. |
| 1952 | Nationwide | Polio | 3,300 killed, 57,628 cases reported |
| 1981-2004 | Nationwide | AIDS | 944,306 estimated U.S. cases; 529,113 estimated deaths |