OxRML/AgentSLR huggingface dataset:
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 0
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 29
Epidemic phase: Post outbreak
Population group: Persons under investigation
Sample type: Contact based
Sex: Unspecified
Sample size: 33
Country: United States
Location: District Of Columbia
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 0
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 86
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Travel based
Sex: Unspecified
Sample size: 86
Location: 'Tropical Africa'
Study period:  Nov 11 1975 to  Jun 06 1977
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 52
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 12
CFR/IFR denominator: 23
CFR/IFR method: Naive
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 6
Maximum age: 46
Sample size: 23
Country: Nigeria
Location: Jos
Study period:  Jan 01 1970 to  Feb 02 1970
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Parameter value: 4.9
Unit: Days
Value type: Mean
Uncertainty type: Range
Uncertainty lower value: 1
Uncertainty upper value: 12
Combined uncertainty: 1 - 12 (Range)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 6
Maximum age: 46
Sample size: 23
Country: Nigeria
Location: Jos
Study period:  Jan 01 1970 to  Feb 02 1970
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>death
Parameter value: 11.6
Unit: Days
Value type: Mean
Uncertainty type: Range
Uncertainty lower value: 7
Uncertainty upper value: 26
Combined uncertainty: 7 - 26 (Range)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 6
Maximum age: 46
Sample size: 23
Country: Nigeria
Location: Jos
Study period:  Jan 01 1970 to  Feb 02 1970
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>discharge/recovery
Parameter value: 17.3
Unit: Days
Value type: Mean
Uncertainty type: Range
Uncertainty lower value: 7
Uncertainty upper value: 31
Combined uncertainty: 7 - 31 (Range)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 6
Maximum age: 46
Sample size: 23
Country: Nigeria
Location: Jos
Study period:  Jan 01 1970 to  Feb 02 1970
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Mid outbreak
Risk factor: Other
Risk factor outcome: Occurrence
Risk factor significance: Significant
Risk factor adjustment: Adjusted
Population group: Outdoor workers
Sample type: Community based
Sex: Both
Sample size: 73
Country: Liberia
Location: Bong, Grand Bassa, Lofa, Nimba
Study period:   2008 to   2012
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Mid outbreak
Risk factor: Other
Risk factor outcome: Occurrence
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: Outdoor workers
Sample type: Community based
Sex: Both
Sample size: 73
Country: Liberia
Location: Bong, Grand Bassa, Lofa, Nimba
Study period:   2008 to   2012
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Parameter value: 10.1
Unit: Substitutions/site/year
Value type: Mean
Uncertainty type: HPDI 95%
Uncertainty lower value: 8.2
Uncertainty upper value: 12.2
Combined uncertainty: 8.2 - 12.2 (HPDI 95%)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 11
Country: Nigeria
Location: Ebonyi, Enugu
Study period:   2012 to   2016
Genome site: NP
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Parameter value: 8.4
Unit: Substitutions/site/year
Value type: Mean
Uncertainty type: HPDI 95%
Uncertainty lower value: 7.2
Uncertainty upper value: 9.6
Combined uncertainty: 7.2 - 9.6 (HPDI 95%)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 11
Country: Nigeria
Location: Ebonyi, Enugu
Study period:   2012 to   2016
Genome site: L
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Parameter value: 16.9
Unit: Substitutions/site/year
Value type: Mean
Uncertainty type: HPDI 95%
Uncertainty lower value: 8.6
Uncertainty upper value: 25.9
Combined uncertainty: 8.6 - 25.9 (HPDI 95%)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 11
Country: Nigeria
Location: Ebonyi, Enugu
Study period:   2012 to   2016
Genome site: Z
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Parameter value: 7.7
Unit: Substitutions/site/year
Value type: Mean
Uncertainty type: HPDI 95%
Uncertainty lower value: 6.2
Uncertainty upper value: 9.3
Combined uncertainty: 6.2 - 9.3 (HPDI 95%)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 11
Country: Nigeria
Location: Ebonyi, Enugu
Study period:   2012 to   2016
Genome site: GPC
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 24
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 24
Upper bound: 60
Bounds: 24 - 60
CFR/IFR numerator: 68
CFR/IFR denominator: 284
CFR/IFR method: Adjusted
Epidemic phase: Unspecified
Disaggregated by: Age, Region
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 284
Country: Nigeria
Study period:  Jan 01 2011 to  Nov 11 2015
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Sex
Risk factor outcome: Death
Risk factor significance: Not significant
Risk factor adjustment: Not adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 284
Country: Nigeria
Study period:  Jan 01 2011 to  Nov 11 2015
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Age;Other
Risk factor outcome: Death
Risk factor significance: Significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 284
Country: Nigeria
Study period:  Jan 01 2011 to  Nov 11 2015
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Other
Risk factor outcome: Death
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 284
Country: Nigeria
Study period:  Jan 01 2011 to  Nov 11 2015
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 50.2
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 36
Upper bound: 67
Bounds: 36 - 67
CFR/IFR numerator: 328
CFR/IFR denominator: 654
Epidemic phase: Endemic
Disaggregated by: Time
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 654
Country: Sierra Leone
Location: Kenema Government Hospital
Study period:   2007 to   2014
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 23.6
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 3.8
Upper bound: 54.9
Bounds: 3.8 - 54.9
CFR/IFR numerator: 738
CFR/IFR denominator: 3126
Epidemic phase: Unspecified
Disaggregated by: Age, Region
Population group: General population
Sample type: Community based
Sex: Both
Minimum age: 5
Sample size: 3126
Country: Guinea
Study period:  Jun 06 1990 to  Jan 01 1992
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Unit: Percentage (%)
Lower bound: 2
Upper bound: 40
Bounds: 2 - 40
Epidemic phase: Unspecified
Disaggregated by: Region
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Minimum age: 5
Sample size: 406
Country: Guinea
Study period:  Jun 06 1990 to  Jan 01 1992
Pathogen: Lassa mammarenavirus
Parameter class: Relative contribution
Parameter type: Relative contribution - human to human
Parameter value: 22
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 1002
Country: Sierra Leone
Location: Kenema Government Hospital
Study period: 27 Apr 04 2010 to 31 Jan 01 2012
Pathogen: Lassa mammarenavirus
Parameter class: Relative contribution
Parameter type: Relative contribution - human to human
Parameter value: 20
Unit: Percentage (%)
Value type: Unspecified
Uncertainty type: IQR
Uncertainty lower value: 15
Uncertainty upper value: 30
Combined uncertainty: 15 - 30 (IQR)
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Sierra Leone
Location: Kenema Government Hospital
Study period: 27 Apr 04 2010 to 31 Jan 01 2012
Pathogen: Lassa mammarenavirus
Parameter class: Reproduction number
Parameter type: Reproduction number (Effective, Re)
Parameter value: 0.73
Unit: No units
Value type: Mean
Uncertainty single value: 11.7 (Maximum)
Combined uncertainty: 11.7 (Maximum)
Epidemic phase: Endemic
Reproduction number method: Branching process
Reproduction number pathway: Human-human
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Country: Liberia, Nigeria
Location: Jos, Zorzor
Study period: 26 Dec 12 1969 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - generation time
Unit: Days
Epidemic phase: Endemic
Disaggregated by: Other
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Country: Liberia, Nigeria
Location: Jos, Zorzor
Study period: 26 Dec 12 1969 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Relative contribution
Parameter type: Relative contribution - human to human
Unit: Percentage (%)
Lower bound: 18.5
Upper bound: 26
Bounds: 18.5 - 26
Epidemic phase: Endemic
Disaggregated by: Method
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Sierra Leone
Location: Kenema Government Hospital
Study period: 27 Apr 04 2010 to 31 Jan 01 2012
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 14
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR denominator: 42
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Maximum age: 60
Sample size: 42
Country: Guinea, Liberia, Sierra Leone
Location: Panguma Catholic Hospital (Eastern Province, Sierra Leone), Swedish Free Pentecostal Mission Clinic (Foya), Tellewoyan Memorial Hospital (Voinjama), Curran Lutheran Hospital (Zorzor), Bong Mine Hospital (Bong Town).
Study period:  Jul 07 1978 to  Apr 04 1979
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>death
Unit: Days
Lower bound: 7
Upper bound: 21
Bounds: 7 - 21
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Country: Guinea, Liberia, Sierra Leone
Location: Panguma Catholic Hospital (Eastern Province, Sierra Leone), Swedish Free Pentecostal Mission Clinic (Foya), Tellewoyan Memorial Hospital (Voinjama), Curran Lutheran Hospital (Zorzor), Bong Mine Hospital (Bong Town).
Study period:  Jul 07 1978 to  Apr 04 1979
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 40.3
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 39
Upper bound: 42
Bounds: 39 - 42
CFR/IFR numerator: 102
CFR/IFR denominator: 253
Epidemic phase: Endemic
Disaggregated by: Region, Sex, Time
Population group: Other
Sample type: Community based
Sex: Both
Sample size: 253
Country: Guinea
Location: Bantou, Tanganya
Study period:  May 05 2004 to  Oct 10 2004
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Parameter value: 2.8
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 7
CFR/IFR denominator: 253
Epidemic phase: Endemic
Population group: Other
Sample type: Community based
Sex: Both
Sample size: 253
Country: Guinea
Location: Bantou, Tanganya
Study period:  May 05 2004 to  Oct 10 2004
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Other;Sex
Risk factor outcome: Serology
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: Other
Sample type: Community based
Sex: Both
Sample size: 253
Country: Guinea
Location: Bantou, Tanganya
Study period:  May 05 2004 to  Oct 10 2004
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 11.3
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 10
Upper bound: 12.9
Bounds: 10 - 12.9
Uncertainty type: 95% CI
Uncertainty lower value: 9.3
Uncertainty upper value: 13.3
Combined uncertainty: 9.3 - 13.3 (95% CI)
Epidemic phase: Endemic
Disaggregated by: Method, Region
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1
Sample size: 977
Country: Guinea
Location: Gueckedou, Lola, Yomou
Study period: 10 Apr 04 2000 to 22 Apr 04 2000
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Age;Contact with animal;Funeral;Occupation;Other;Sex
Risk factor outcome: Serology
Risk factor occupation: Abattoir services;Livestock and animal herders
Risk factor significance: Not significant
Risk factor adjustment: Not adjusted
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1
Sample size: 1424
Country: Guinea
Location: Gueckedou, Lola, Yomou
Study period: 10 Apr 04 2000 to 22 Apr 04 2000
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Other
Risk factor outcome: Serology
Risk factor significance: Significant
Risk factor adjustment: Not adjusted
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1
Sample size: 1424
Country: Guinea
Location: Gueckedou, Lola, Yomou
Study period: 10 Apr 04 2000 to 22 Apr 04 2000
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Other
Risk factor outcome: Serology
Risk factor significance: Significant
Risk factor adjustment: Adjusted
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1
Sample size: 1424
Country: Guinea
Location: Gueckedou, Lola, Yomou
Study period: 10 Apr 04 2000 to 22 Apr 04 2000
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Contact with animal
Risk factor outcome: Serology
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1
Sample size: 1424
Country: Guinea
Location: Gueckedou, Lola, Yomou
Study period: 10 Apr 04 2000 to 22 Apr 04 2000
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 26
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 12.1
Upper bound: 30.1
Bounds: 12.1 - 30.1
CFR/IFR numerator: 248
CFR/IFR denominator: 953
Epidemic phase: Endemic
Disaggregated by: Level of exposure
Population group: Mixed groups
Sample type: Household based
Sex: Both
Sample size: 953
Country: Sierra Leone
Location: Segbwema, Panguma, Kenema
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Household contact
Risk factor outcome: Serology
Risk factor significance: Significant
Risk factor adjustment: Not adjusted
Population group: Mixed groups
Sample type: Household based
Sex: Both
Sample size: 953
Country: Sierra Leone
Location: Segbwema, Panguma, Kenema
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 33
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 6
CFR/IFR denominator: 18
CFR/IFR method: Naive
Epidemic phase: Unspecified
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Sample size: 18
Country: Sierra Leone
Location: Panguma Hospital
Study period:  Jan 01 1973 to  Mar 03 1976
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 75
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 9
CFR/IFR denominator: 12
CFR/IFR method: Naive
Epidemic phase: Unspecified
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Sample size: 12
Country: Sierra Leone
Location: Nixon Memorial Hospital, Segbwema
Study period:   1975 to   1975
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
CFR/IFR numerator: 40
CFR/IFR denominator: 45
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 45
Country: Sierra Leone
Location: Panguma Hospital
Study period:  Jan 01 1973 to  Mar 03 1976
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 15.9
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 22
CFR/IFR denominator: 138
CFR/IFR method: Naive
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 138
Country: Sierra Leone
Location: Panguma Hospital
Study period:  Jan 01 1973 to  Mar 03 1976
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 16.6
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 16
CFR/IFR denominator: 96
CFR/IFR method: Naive
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 96
Country: Sierra Leone
Location: Nixon Memorial Hospital, Segbwema
Study period:   1975 to   1975
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Unit: Substitutions/site/year
Epidemic phase: Mid outbreak
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 120
Country: Nigeria
Location: Edo, Ondo, Ebonyi
Study period: 1 Jan 01 2018 to 18 Mar 03 2018
Genome site: Lineage II - S segment
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations - evolutionary rate
Unit: Substitutions/site/year
Epidemic phase: Mid outbreak
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 120
Country: Nigeria
Location: Edo, Ondo, Ebonyi
Study period: 1 Jan 01 2018 to 18 Mar 03 2018
Genome site: Lineage II - L segment
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
CFR/IFR numerator: 8
CFR/IFR denominator: 4295
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Sample size: 4295
Country: Central African Republic
Location: Nola And Ikaumba, The Pre
ForestGrassland Of Bozo And Bangassou, The Moist
Wooded Grassland Of Bouar And Obo, The Dry Wooded
Rassland Near Mbre, And The Dry Grassland-Of Birao.
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
CFR/IFR numerator: 0
CFR/IFR denominator: 1899
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 1.5
Sample size: 1899
Country: Kenya
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
CFR/IFR numerator: 0
CFR/IFR denominator: 253
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 0
Sample size: 253
Country: Gabon
Location: Haut-Ogooue
Study period: 13 Feb 02 1980 to 19 Mar 03 1980
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 24
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR denominator: 75
Epidemic phase: Endemic
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 75
Country: Guinea, Nigeria
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 0
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 53
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Contact based
Sex: Both
Minimum age: 22
Maximum age: 62
Sample size: 53
Country: Sweden
Location: Sahlgrenska University Hospital, Gothenburg
Study period:  Mar 03 2016 to   2016
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 0.06
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 3
CFR/IFR denominator: 5070
Epidemic phase: Unspecified
Disaggregated by: Region
Population group: General population
Sample type: Population based
Sex: Both
Sample size: 5070
Country: Cameroon, Central African Republic, Chad, Republic of the Congo, Equatorial Guinea, Gabon
Study period:  Jan 01 1985 to  Jun 06 1987
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
CFR/IFR numerator: 5
CFR/IFR denominator: 715
Epidemic phase: Unspecified
Disaggregated by: Region
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 715
Country: Central African Republic
Location: Bangassou, Botambi, Bouar, Bouboui, Bozo, Gomoka
Zemio
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 13
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 9
Upper bound: 17
Bounds: 9 - 17
CFR/IFR numerator: 27
CFR/IFR denominator: 206
Epidemic phase: Endemic
Disaggregated by: Age, Sex
Population group: Persons under investigation
Sample type: Contact based
Sex: Both
Sample size: 206
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 38
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 33
Upper bound: 43
Bounds: 33 - 43
CFR/IFR numerator: 24
CFR/IFR denominator: 63
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Disaggregated by: Age, Sex
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 63
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 1 Oct 10 1970 to 1 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
CFR/IFR numerator: 6
CFR/IFR denominator: 9
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Sample size: 9
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 1 Oct 10 1970 to 1 Oct 10 1972