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GEOREF RECORD

An outbreak of coccidioidomycosis (valley fever) caused by landslides triggered by the 1994 Northridge, California, earthquake

Randall W. Jibson, Edwin L. Harp, Eileen Schneider, Rana A. Hajjeh and Richard A. Spiegel
An outbreak of coccidioidomycosis (valley fever) caused by landslides triggered by the 1994 Northridge, California, earthquake (in A paradox of power; voices of warning and reason in the geosciences, Charles W. Welby (editor) and Monica E. Gowan (editor))
Reviews in Engineering Geology (1998) 12: 53-61

Abstract

Following the January 17, 1994, Northridge, California, earthquake (M = 6.7), Ventura County, California, experienced a major outbreak of coccidioidomycosis (valley fever), a respiratory disease contracted by inhaling airborne fungal spores. In the eight weeks following the earthquake (January 24 through March 15), 203 outbreak-associated cases were reported, which is about an order of magnitude more than the expected number of cases, and 3 of these cases were fatal. Simi Valley, in easternmost Ventura County, had the highest attack rate in the county, and the attack rate decreased westward across the county. The temporal and spatial distribution of coccidioidomycosis cases indicates that the outbreak resulted from inhalation of spore-contaminated dust generated by earthquake-triggered landslides. Canyons northeast of Simi Valley produced many highly disrupted, dust-generating landslides during the earthquake and its aftershocks. Prevailing winds after the earthquake were from the northeast, which transported dust into Simi Valley and beyond to communities to the west. The 3 fatalities from the coccidioidomycosis epidemic accounted for 4% of the total earthquake-related fatalities.


ISSN: 0080-2018
EISSN: 2169-799X
Coden: GAEGA4
Serial Title: Reviews in Engineering Geology
Serial Volume: 12
Title: An outbreak of coccidioidomycosis (valley fever) caused by landslides triggered by the 1994 Northridge, California, earthquake
Title: A paradox of power; voices of warning and reason in the geosciences
Author(s): Jibson, Randall W.Harp, Edwin L.Schneider, EileenHajjeh, Rana A.Spiegel, Richard A.
Author(s): Welby, Charles W.editor
Author(s): Gowan, Monica E.editor
Affiliation: U. S. Geological Survey, Denver, CO, United States
Affiliation: North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States
Pages: 53-61
Published: 1998
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-4112-2
References: 15
Accession Number: 2003-042456
Categories: Environmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
N34°00'00" - N34°30'00", W119°00'00" - W118°15'00"
Secondary Affiliation: GeoLogic Company, USA, United StatesCenters for Disease Control and Prevention, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200314
Program Name: USGSOPNon-USGS publications with USGS authors
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