UFO and UAP cases with documented physiological effects

11 well-documented UFO/UAP encounters backed by documented physiological effects, 1952 to 2013: 6 disputed, 3 unresolved, 2 explained. Each case has its sources, timeline and the official or best explanation.

11 cases

• The Florida scoutmaster — burned, and called a hoax 19 August 1952 · Palmetto scrub off a back road inland from West Palm Beach, Florida DISPUTED
• Flatwoods "monster" 12 September 1952 · Flatwoods, Braxton County, West Virginia EXPLAINED
• Antônio Vilas-Boas abduction claim 16 October 1957 · São Francisco de Sales, Minas Gerais, Brazil DISPUTED
• Fort Itaipu sentries burned 4 November 1957 · Fort Itaipu, Praia Grande, São Paulo UNRESOLVED
• Falcon Lake incident 20 May 1967 · Falcon Lake, Whiteshell Provincial Park, Manitoba DISPUTED
• Colares "chupa-chupa" & Operação Prato 15 October 1977 · Colares Island, Pará DISPUTED
• Emilcin abduction report 10 May 1978 · Emilcin, Lublin Voivodeship UNRESOLVED
• Val Johnson — deputy's patrol car struck by a light 27 August 1979 · Near Stephen, Marshall County, Minnesota DISPUTED
• Dechmont Law — Robert Taylor 9 November 1979 · Dechmont Law, Livingston, West Lothian UNRESOLVED
• Cash–Landrum incident 29 December 1980 · FM 1485 near Huffman, Texas DISPUTED
• Chelyabinsk meteor — and the “UFO that shot it down” 15 February 2013 · Chelyabinsk Oblast, Russia; the air burst south of Chelyabinsk EXPLAINED

By evidence

• Official government documents 158
• Many independent witnesses 135
• Military witnesses 74
• Pilot and aircrew witnesses 57
• Photographs 55
• Video footage 53
• Radar tracking 48
• Physical traces 39
• Police witnesses 36
• Infrared or other sensor data 21
• Audio recordings or radio transcripts 15
• Reported electromagnetic effects 13
• Motion-picture film 6