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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Int J Parasitol. 2009 Feb 13;39(8):925–933. doi: 10.1016/j.ijpara.2009.02.005

Table 1.

Human toxoplasmosis outbreaks.

Place of
outbreak
Route of
Transmission
Stage
involved
People
exposed
People
symptomatic
Isolate/
genotype
Date Symptoms Reference
Alabama, USA Cat feces contamination Oocyst 30 10 - 1976 Chorioretinitis, fever, neurologic deficits Stagno et al., 1980
Atlanta, USA Inhalation Oocyst 37 37 - 1977 Febrile reaction Teutsch, et al., 1979
Panama Water Oocyst 35 29 - 1979 Fever, Lymphadenopathy, myalgia, abdominal pain, stiff neck and eye pain Benenson et al., 1982
Victoria, Canada Water Oocyst 2894 – 7718 110 Atypical 1995 Retinitis, lymphadenopathy Bowie et al., 1997, Burnett et al., 1998
Korea Raw liver, spleen-wild pig Bradyzoite 3 3 - 1996 Unilateral chorioretinitis Choi et al., 1997
Korea Raw liver- domestic pig Bradyzoite 11 5 - 1996 Lymphadenopathy
USA Raw venison Bradyzoite 5 5 - 2000 Flu like symtoms with visual loss and retinits Ross et al., 2001
Santa Isabel Water Oocyst 426 155 Atypical 2001 Headache, malaise, myalgia, lymphadenitis, arthralgia de Moura et al., 2006
Turkey Cat feces contamination Oocyst 1797 171 - 2002 Lymphadenopathy, fever, myalgia, dizziness, headache Doganci et al., 2006
Suriname Water Oocyst 11 8 Atypical 2003 Fever, myalgia, impairment, congenital abortion and death Demar et al., 2007
India Water Oocyst Not assessed 213 - 2004 Chorioretinitis Palanisamy et al., 2006

“-” indicates no isolate recovered or strain genotyped from infected material