OxRML/AgentSLR huggingface dataset:
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 81
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 54
CFR/IFR denominator: 67
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 67
Country: Sierra Leone
Location: Kenema
Study period:   2008 to   2013
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Parameter value: 9.3
Unit: Days
Value type: Mean
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 107
Country: Nigeria, Sierra Leone
Location: Irrua, Kenema
Study period:   2008 to   2013
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Unit: Percentage (%)
Lower bound: 14.8
Upper bound: 56
Bounds: 14.8 - 56
CFR/IFR method: Unspecified
Epidemic phase: Mid outbreak
Disaggregated by: Time
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Sierra Leone
Location: Kenema District, Kailahun District
Study period:  Jan 01 1996 to  Dec 12 1997
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Other;Sex
Risk factor outcome: Infection
Risk factor significance: Not significant
Risk factor adjustment: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Both
Minimum age: 0
Maximum age: 15
Sample size: 373
Country: Nigeria
Location: Irrua, Edo State
Study period: 1 Dec 12 2009 to 30 Nov 11 2010
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Other
Risk factor outcome: Infection
Risk factor significance: Significant
Risk factor adjustment: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Both
Minimum age: 0
Maximum age: 15
Sample size: 373
Country: Nigeria
Location: Irrua, Edo State
Study period: 1 Dec 12 2009 to 30 Nov 11 2010
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
CFR/IFR numerator: 3
CFR/IFR denominator: 13
CFR/IFR method: Naive
Epidemic phase: Endemic
Population group: Children
Sample type: Hospital based
Sex: Unspecified
Minimum age: 0
Maximum age: 15
Sample size: 13
Country: Nigeria
Location: Irrua, Edo State
Study period: 1 Dec 12 2009 to 30 Nov 11 2010
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Parameter value: 11
Unit: Days
Value type: Mean
Uncertainty single value: 3.5 (Standard Deviation)
Combined uncertainty: 3.5 (Standard Deviation)
Epidemic phase: Unspecified
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Sample size: 6
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Parameter value: 6
Unit: Days
Value type: Mean
Uncertainty single value: 2.6 (Standard Deviation)
Combined uncertainty: 2.6 (Standard Deviation)
Epidemic phase: Unspecified
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Sample size: 14
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - admission to care>death
Parameter value: 7
Unit: Days
Value type: Median
Uncertainty type: Range
Uncertainty lower value: 0
Uncertainty upper value: 12
Combined uncertainty: 0 - 12 (Range)
Epidemic phase: Unspecified
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Sample size: 6
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - admission to care>discharge/recovery
Parameter value: 10
Unit: Days
Value type: Median
Uncertainty type: Range
Uncertainty lower value: 5
Uncertainty upper value: 36
Combined uncertainty: 5 - 36 (Range)
Epidemic phase: Unspecified
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Sample size: 14
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - incubation period
Parameter value: 10
Unit: Days
Value type: Mean
Uncertainty type: Range
Uncertainty lower value: 5
Uncertainty upper value: 18
Combined uncertainty: 5 - 18 (Range)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 12
Maximum age: 47
Sample size: 20
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Other
Risk factor outcome: Death
Risk factor significance: Significant
Risk factor adjustment: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 12
Maximum age: 47
Sample size: 20
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - other human delay (go to section)
Parameter value: 8.2
Unit: Days
Value type: Mean
Uncertainty single value: 3.8 (Standard Deviation)
Combined uncertainty: 3.8 (Standard Deviation)
Epidemic phase: Unspecified
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Sample size: 14
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Other delay start: Admission to Care/Hospitalisation
Other delay end: Symptom Resolution
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 30
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 6
CFR/IFR denominator: 20
CFR/IFR method: Naive
Epidemic phase: Unspecified
Disaggregated by: Other
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 12
Maximum age: 47
Sample size: 20
Country: Nigeria
Location: Ebonyi State
Study period: 1 Jan 01 2012 to 25 Mar 03 2012
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
CFR/IFR numerator: 0
CFR/IFR denominator: 741
Epidemic phase: Endemic
Population group: Mixed groups
Sample type: Community based
Sex: Both
Sample size: 741
Country: Kenya
Location: Western Kenya
Study period:  Mar 03 1980 to  Dec 12 1981
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: 159
Epidemic phase: Post outbreak
Population group: Mixed groups
Sample type: Contact based
Sex: Unspecified
Sample size: 159
Country: United Kingdom
Location: St Thomas's Hospital, London
Study period:   1982 to   1982
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Unit: Percentage (%)
Lower bound: 0.9
Upper bound: 14.1
Bounds: 0.9 - 14.1
Epidemic phase: Endemic
Disaggregated by: Age, Other, Region, Sex, Time
Population group: General population
Sample type: Community based
Sex: Both
Country: Liberia
Location: Lofa County, Montserrado County
Study period:  Sep 09 1980 to  Jan 01 1982
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Household contact
Risk factor outcome: Infection
Risk factor significance: Significant
Risk factor adjustment: Unspecified
Population group: Mixed groups
Sample type: Community based
Sex: Unspecified
Country: Nigeria
Location: Lassa
Study period: 3 Mar 1971 to  Mar 1971
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - PRNT
Parameter value: 5.8
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 0
Upper bound: 9.3
Bounds: 0 - 9.3
CFR/IFR numerator: 25
CFR/IFR denominator: 434
Epidemic phase: Unspecified
Disaggregated by: Age, Occupation, Region, Sex
Population group: Mixed groups
Sample type: Community based
Sex: Both
Sample size: 434
Country: Nigeria
Location: Lassa
Study period: 24 Aug 1970 to 24 Aug 1970
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - PRNT
Parameter value: 5.4
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 0
Upper bound: 23.5
Bounds: 0 - 23.5
CFR/IFR numerator: 18
CFR/IFR denominator: 336
Epidemic phase: Unspecified
Disaggregated by: Age, Occupation, Region, Sex
Population group: Mixed groups
Sample type: Community based
Sex: Both
Sample size: 336
Country: Nigeria
Location: Lassa
Study period: 3 Mar 1971 to  Mar 1971
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Unit: Percentage (%)
Lower bound: 54
Upper bound: 56
Bounds: 54 - 56
CFR/IFR method: Adjusted
Epidemic phase: Endemic
Disaggregated by: Other
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Country: Sierra Leone
Location: Kenema Government Hospital
Study period:   2007 to   2011
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Other;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
Country: Sierra Leone
Location: Kenema Government Hospital
Study period:   2007 to   2011
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Parameter value: 27.7
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 28
CFR/IFR denominator: 101
Epidemic phase: Unspecified
Population group: Other
Sample type: Community based
Sex: Unspecified
Sample size: 101
Country: Sierra Leone
Location: Moyamba
Study period:  Apr 04 2010 to  Apr 04 2010
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 62.4
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 63
CFR/IFR denominator: 101
Epidemic phase: Unspecified
Population group: Other
Sample type: Community based
Sex: Unspecified
Sample size: 101
Country: Sierra Leone
Location: Moyamba
Study period:  Apr 04 2010 to  Apr 04 2010
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Parameter value: 23.1
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 3
CFR/IFR denominator: 13
Epidemic phase: Unspecified
Population group: Other
Sample type: Community based
Sex: Unspecified
Sample size: 13
Country: Sierra Leone
Location: Bombali
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 92.3
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 12
CFR/IFR denominator: 13
Epidemic phase: Unspecified
Population group: Other
Sample type: Community based
Sex: Unspecified
Sample size: 13
Country: Sierra Leone
Location: Bombali
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 7
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 3.2
Upper bound: 16.3
Bounds: 3.2 - 16.3
CFR/IFR numerator: 12
CFR/IFR denominator: 170
Epidemic phase: Endemic
Disaggregated by: Region
Population group: Mixed groups
Sample type: Mixed settings
Sex: Both
Sample size: 170
Country: Sierra Leone
Location: Panguma, Tongo, Serabu
Study period:  Nov 1974 to  Nov 1974
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 4
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR denominator: 430
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 430
Country: Ghana
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
CFR/IFR numerator: 0
CFR/IFR denominator: 100
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 100
Country: Guinea
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
CFR/IFR numerator: 0
CFR/IFR denominator: 200
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 200
Country: Ghana
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 18.8
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 40
CFR/IFR denominator: 213
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 213
Country: Guinea
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 3
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 13
CFR/IFR denominator: 430
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 430
Country: Ghana
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 18.5
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 14.9
Upper bound: 66.7
Bounds: 14.9 - 66.7
CFR/IFR numerator: 516
CFR/IFR denominator: 2787
CFR/IFR method: Naive
Epidemic phase: Unspecified
Disaggregated by: Region, Time
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 2787
Country: Nigeria
Study period:  Dec 12 2016 to  Sep 09 2020
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Unspecified
Risk factor: Other
Risk factor outcome: Infection
Risk factor significance: Significant
Risk factor adjustment: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 2787
Country: Nigeria
Study period:  Dec 12 2016 to  Sep 09 2020
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 54
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 33.3
Upper bound: 66.6
Bounds: 33.3 - 66.6
CFR/IFR numerator: 41
CFR/IFR denominator: 76
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Disaggregated by: Age, Time
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 15
Maximum age: 64
Sample size: 76
Country: Nigeria
Location: Bauchi State
Study period:  Jan 01 2015 to  Dec 12 2018
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Other;Sex
Risk factor outcome: Death
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 15
Maximum age: 64
Sample size: 76
Country: Nigeria
Location: Bauchi State
Study period:  Jan 01 2015 to  Dec 12 2018
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Other
Risk factor outcome: Death
Risk factor significance: Significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 15
Maximum age: 64
Sample size: 76
Country: Nigeria
Location: Bauchi State
Study period:  Jan 01 2015 to  Dec 12 2018
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 17.4
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 0
Upper bound: 100
Bounds: 0 - 100
CFR/IFR numerator: 550
CFR/IFR denominator: 3162
CFR/IFR method: Naive
Epidemic phase: Endemic
Disaggregated by: Age, Occupation, Region, Sex, Time
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 3162
Country: Nigeria
Study period:  Jan 01 2018 to  Dec 12 2021
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Sex
Risk factor outcome: Death
Risk factor significance: Unspecified
Risk factor adjustment: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 3162
Country: Nigeria
Study period:  Jan 01 2018 to  Dec 12 2021
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Occupation
Risk factor outcome: Infection
Risk factor occupation: Livestock and animal herders;Other
Risk factor significance: Unspecified
Risk factor adjustment: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 3162
Country: Nigeria
Study period:  Jan 01 2018 to  Dec 12 2021
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: 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: 423
Country: Nigeria
Study period: 1 Jan 01 2018 to 6 May 05 2018
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 25.1
Unit: Percentage (%)
Value type: Unspecified
Uncertainty type: 95% CI
Uncertainty lower value: 20.9
Uncertainty upper value: 29.2
Combined uncertainty: 20.9 - 29.2 (95% CI)
CFR/IFR numerator: 106
CFR/IFR denominator: 423
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Disaggregated by: Region
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 423
Country: Nigeria
Study period: 1 Jan 01 2018 to 6 May 05 2018
Pathogen: Lassa mammarenavirus
Parameter class: Attack rate
Parameter type: Attack rate
Parameter value: 0.56
Unit: Percentage (%)
Value type: Unspecified
Uncertainty type: 95% CI
Uncertainty lower value: 0.35
Uncertainty upper value: 0.77
Combined uncertainty: 0.35 - 0.77 (95% CI)
CFR/IFR numerator: 28
CFR/IFR denominator: 5001
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Contact based
Sex: Both
Sample size: 5001
Country: Nigeria
Study period: 1 Jan 01 2018 to 6 May 05 2018
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age;Occupation
Risk factor outcome: Infection
Risk factor occupation: Healthcare
Risk factor significance: Significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 423
Country: Nigeria
Study period: 1 Jan 01 2018 to 6 May 05 2018
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Contact with animal;Funeral;Sex
Risk factor outcome: Infection
Risk factor significance: Not significant
Risk factor adjustment: Adjusted
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 423
Country: Nigeria
Study period: 1 Jan 01 2018 to 6 May 05 2018
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations – substitution rate
Parameter value: 7.8
Unit: Substitutions/site/year
Value type: Unspecified
Uncertainty type: HPDI 95%
Uncertainty lower value: 5.4
Uncertainty upper value: 10.2
Combined uncertainty: 5.4 - 10.2 (HPDI 95%)
Epidemic phase: Unspecified
Sex: Unspecified
Sample size: 219
Country: Nigeria
Study period:   1969 to   2018
Genome site: L segment
Pathogen: Lassa mammarenavirus
Parameter class: Mutations
Parameter type: Mutations – substitution rate
Parameter value: 7.8
Unit: Substitutions/site/year
Value type: Unspecified
Uncertainty type: HPDI 95%
Uncertainty lower value: 6.3
Uncertainty upper value: 9.1
Combined uncertainty: 6.3 - 9.1 (HPDI 95%)
Epidemic phase: Unspecified
Sex: Unspecified
Sample size: 219
Country: Nigeria
Study period:   1969 to   2018
Genome site: S segment
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Unit: Percentage (%)
Lower bound: 33
Upper bound: 48
Bounds: 33 - 48
Epidemic phase: Endemic
Disaggregated by: Method
Population group: Persons under investigation
Sample type: Contact based
Sex: Both
Sample size: 50
Country: Nigeria
Location: Abakaliki, Owo
Study period:  Oct 10 2018 to  Oct 10 2020
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Unit: Percentage (%)
Lower bound: 50
Upper bound: 64
Bounds: 50 - 64
Epidemic phase: Endemic
Disaggregated by: Method
Population group: Persons under investigation
Sample type: Contact based
Sex: Both
Sample size: 50
Country: Nigeria
Location: Abakaliki, Owo
Study period:  Oct 10 2018 to  Oct 10 2020
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Unit: Percentage (%)
Lower bound: 23
Upper bound: 32
Bounds: 23 - 32
Epidemic phase: Endemic
Disaggregated by: Method
Population group: Other
Sample type: Hospital based
Sex: Both
Sample size: 92
Country: Nigeria
Location: Abakaliki, Owo
Study period:  Oct 10 2018 to  Oct 10 2020
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Unit: Percentage (%)
Lower bound: 48
Upper bound: 77
Bounds: 48 - 77
Epidemic phase: Endemic
Disaggregated by: Method
Population group: Other
Sample type: Hospital based
Sex: Both
Sample size: 92
Country: Nigeria
Location: Abakaliki, Owo
Study period:  Oct 10 2018 to  Oct 10 2020
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 60
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 3
CFR/IFR denominator: 5
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 5
Country: Sierra Leone
Location: Tonkolili
Study period: 30 Oct 10 2019 to 16 Nov 11 2019
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 4.9
Unit: Percentage (%)
Value type: Unspecified
Uncertainty type: 95% CrI
Uncertainty lower value: 0
Uncertainty upper value: 5.4
Combined uncertainty: 0 - 5.4 (95% CrI)
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Nigeria
Study period:   2016 to   2018
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - incubation period
Parameter value: 12.8
Unit: Days
Value type: Mean
Distribution type: Gamma
Distribution parameter 1: 12.8 (Mean)
Distribution parameter 2: 4.6 (Standard deviation)
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Nigeria
Study period:   2016 to   2018
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>death
Parameter value: 13.8
Unit: Days
Value type: Mean
Distribution type: Gamma
Distribution parameter 1: 13.8 (Mean)
Distribution parameter 2: 7.6 (Standard deviation)
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Nigeria
Study period:   2016 to   2018