Region | Timeframe | Seroprevalence (%) |
Study: Residents (at least 100 subjects) | ||
Nantucket Island, MA[1] | 1975 and 1976 | 1.9 (7.5) |
Shelter Island, NY[2] | 1978 | 6.9 |
Block Island, RI[3,4] | 1990 and 1991 | 4.6 |
Block Island, RI[5] | 1991 to 2000 | 9 |
Eastern Long Island, NY[6] | 1994 and 1995 | 1 |
New England[7] | 2018 | 10 |
Study: Blood donors (at least 100 subjects) | ||
Shelter Island, NY[8] | 1998 | 4.3 |
Connecticut[9] | 1999 | 0.9 |
Connecticut[10] | 2000 to 2007 | 1.1 |
Massachusetts[10] | 2000 to 2007 | 1.4 |
Connecticut[11] | 2012 to 2018 | 0.33 |
Massachusetts[11] | 2012 to 2018 | 0.21 |
New York[12] | 2013 | 0.28 |
Minnesota[12] | 2013 | 0.15 |
Minnesota[13] | 2010 to 2011 | 2 |