OxRML/AgentSLR huggingface dataset:
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 22
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 19
Upper bound: 33
Bounds: 19 - 33
CFR/IFR numerator: 12
CFR/IFR denominator: 54
Epidemic phase: Endemic
Disaggregated by: Occupation
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 54
Country: Sierra Leone
Location: Panguma
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Unit: Percentage (%)
Lower bound: 0
Upper bound: 13
Bounds: 0 - 13
Epidemic phase: Endemic
Disaggregated by: Region
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Country: Sierra Leone
Location: Segbwema, Serabu, Koidu, Mobai
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Household contact;Other
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: 206
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Age
Risk factor outcome: Attack Rate
Risk factor significance: Significant
Risk factor adjustment: Not adjusted
Population group: General population
Sample type: Population based
Sex: Both
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 1 Oct 10 1970 to 1 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Risk factors
Parameter type: Risk factors
Epidemic phase: Endemic
Risk factor: Sex
Risk factor outcome: Attack Rate
Risk factor significance: Not significant
Risk factor adjustment: Not adjusted
Population group: General population
Sample type: Population based
Sex: Both
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 1 Oct 10 1970 to 1 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 6
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 0
Upper bound: 11.8
Bounds: 0 - 11.8
CFR/IFR numerator: 16
CFR/IFR denominator: 255
Epidemic phase: Endemic
Disaggregated by: Age, Other, Region, Sex
Population group: General population
Sample type: Household based
Sex: Both
Sample size: 255
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Attack rate
Parameter type: Attack rate
Parameter value: 2.2
Unit: No units
Value type: Unspecified
Lower bound: 0
Upper bound: 8.1
Bounds: 0 - 8.1
Epidemic phase: Endemic
Disaggregated by: Age, Sex
Population group: General population
Sample type: Population based
Sex: Both
Country: Sierra Leone
Location: Panguma, Tongo
Study period: 1 Oct 10 1970 to 1 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 14.9
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 3.8
Upper bound: 40.4
Bounds: 3.8 - 40.4
CFR/IFR numerator: 95
CFR/IFR denominator: 637
Epidemic phase: Unspecified
Disaggregated by: Other, Region
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 637
Country: Liberia
Location: Lofa, Grand Cape Mount, Mont-Serrado, Nimba, Bong, Grand Bassa, Grand Gedeh, Maryland
Study period:   1979 to   1982
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Unit: Percentage (%)
Lower bound: 6
Upper bound: 28
Bounds: 6 - 28
Epidemic phase: Unspecified
Disaggregated by: Other, Time
Population group: Other
Sample type: Hospital based
Sex: Unspecified
Country: Liberia
Location: Zorzor, Ganta, Paynesville
Study period:  Jul 07 1980 to  Apr 04 1982
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 8.4
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 4.1
Upper bound: 22.9
Bounds: 4.1 - 22.9
CFR/IFR numerator: 71
CFR/IFR denominator: 844
Epidemic phase: Unspecified
Disaggregated by: Occupation, Other, Region
Population group: Healthcare workers
Sample type: Hospital based
Sex: Both
Sample size: 844
Country: Liberia
Location: Lofa County, Bong County, Nimba County, Monrovia, Bassa County
Study period:  Oct 10 1976 to  Oct 10 1977
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - incubation period
Unit: Days
Lower bound: 7
Upper bound: 17
Bounds: 7 - 17
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Female
Minimum age: 45
Maximum age: 69
Sample size: 3
Country: Nigeria
Location: Lassa
Study period: 12 Jan 01 1969 to 20 Feb 02 1969
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 9.3
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 23
CFR/IFR denominator: 246
CFR/IFR method: Adjusted
Epidemic phase: Unspecified
Disaggregated by: Age, Other, Sex, Symptoms
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 0
Sample size: 246
Country: Liberia
Location: Zorzor
Study period: 1 Jul 07 1980 to 30 Apr 04 1986
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 15.6
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 5
CFR/IFR denominator: 32
CFR/IFR method: Adjusted
Epidemic phase: Unspecified
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Country: Liberia
Location: Zorzor
Study period: 1 Jul 07 1980 to 30 Apr 04 1986
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 26.7
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 4
CFR/IFR denominator: 15
CFR/IFR method: Adjusted
Epidemic phase: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Unspecified
Maximum age: 12
Sample size: 15
Country: Liberia
Location: Zorzor
Study period: 1 Jul 07 1980 to 30 Apr 04 1986
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 65
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 22
CFR/IFR denominator: 34
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 34
Country: Nigeria
Location: Aboh Mbaise, Aba, Owerri
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - time in care (length of stay)
Parameter value: 11.5
Unit: Days
Value type: Mean
Uncertainty single value: 4.97 (Standard Deviation)
Combined uncertainty: 4.97 (Standard Deviation)
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Country: Nigeria
Location: Aboh Mbaise
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 1
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 6
CFR/IFR denominator: 415
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Community based
Sex: Unspecified
Sample size: 415
Country: Nigeria
Location: Aboh Mbaise
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 1
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 2
CFR/IFR denominator: 175
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 175
Country: Nigeria
Location: Aboh Mbaise
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 2
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 5
CFR/IFR denominator: 240
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 240
Country: Nigeria
Location: Aba
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
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: 47
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 47
Country: Nigeria
Location: University Of Nigeria Teaching Hospital
Study period: 1 Jan 01 1989 to 31 Mar 03 1989
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 100
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 2
CFR/IFR denominator: 2
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Unspecified
Sample size: 2
Country: Liberia
Location: Curran Lutheran Hospital, Zorzor
Study period:  Jul 07 1980 to  Apr 04 1982
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 66.7
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 2
CFR/IFR denominator: 3
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Sample size: 3
Country: Liberia
Location: Curran Lutheran Hospital, Zorzor
Study period:  Jul 07 1980 to  Apr 04 1982
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 13.6
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 6
CFR/IFR denominator: 44
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Disaggregated by: Age, Other, Sex
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 44
Country: Liberia
Location: Curran Lutheran Hospital, Zorzor
Study period:  Jul 07 1980 to  Apr 04 1982
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IFA
Parameter value: 1.5
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 2
CFR/IFR denominator: 135
Epidemic phase: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Unspecified
Minimum age: 0
Maximum age: 12
Sample size: 161
Country: Liberia
Location: Curran Lutheran Hospital, Zorzor, Lofa County
Study period:  Feb 02 1982 to  Feb 02 1982
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 27
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 4
CFR/IFR denominator: 15
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Children
Sample type: Hospital based
Sex: Unspecified
Minimum age: 0
Maximum age: 12
Sample size: 15
Country: Liberia
Location: Zorzor, Lofa County, Suakoko, Bong County
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 17
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 3
CFR/IFR denominator: 18
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Pregnant women
Sample type: Hospital based
Sex: Female
Sample size: 18
Country: Liberia
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 36
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 4
CFR/IFR denominator: 11
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 11
Country: Liberia
Location: Zorzor
Study period:  Mar 03 1972 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
CFR/IFR numerator: 2
CFR/IFR denominator: 17
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 17
Country: Liberia
Location: Zorzor
Study period:  Mar 03 1972 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 40
Epidemic phase: Unspecified
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 40
Country: Liberia
Location: Zorzor
Study period:  Mar 03 1972 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 22
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Contact based
Sex: Unspecified
Sample size: 22
Country: Liberia
Location: Zorzor
Study period:  Mar 03 1972 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 3
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 4
CFR/IFR denominator: 133
Epidemic phase: Unspecified
Population group: General population
Sample type: Community based
Sex: Unspecified
Sample size: 133
Country: Liberia
Location: Zigida
Study period:  Mar 03 1972 to  Apr 04 1972
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 8
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 1
CFR/IFR denominator: 12
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 12
Country: Sierra Leone
Location: Panguma Catholic Hospital, Eastern Province
Study period: 23 Sep 09 1972 to 15 Oct 10 1972
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Unit: Days
Lower bound: 4
Upper bound: 9
Bounds: 4 - 9
Epidemic phase: Unspecified
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 12
Country: Sierra Leone
Location: Panguma Catholic Hospital, Eastern Province
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: 15.6
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 5
Upper bound: 76
Bounds: 5 - 76
CFR/IFR numerator: 53
CFR/IFR denominator: 333
CFR/IFR method: Naive
Epidemic phase: Endemic
Disaggregated by: Other
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 441
Country: Sierra Leone
Location: East
Study period:   1977 to   1977
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 16.5
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 15.2
Upper bound: 22.2
Bounds: 15.2 - 22.2
CFR/IFR numerator: 73
CFR/IFR denominator: 441
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Disaggregated by: Age, Sex
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 441
Country: Sierra Leone
Location: East
Study period:  Feb 02 1977 to  Jan 01 1979
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 2
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 6
Epidemic phase: Unspecified
Population group: Mixed groups
Sample type: Hospital based
Sex: Both
Minimum age: 1
Maximum age: 89
Country: Sudan
Location: Khartoum
Study period:  Oct 10 1988 to  Nov 11 1988
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: 381
Epidemic phase: Unspecified
Population group: Unspecified
Sample type: Unspecified
Sex: Unspecified
Sample size: 381
Country: Madagascar
Location: Antananarivo, Manndoto, Andasibe, Tsiroanomandidy, Ampijoroa
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - Unspecified
Parameter value: 4.9
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 2.2
Upper bound: 9.8
Bounds: 2.2 - 9.8
CFR/IFR numerator: 53
CFR/IFR denominator: 1077
Epidemic phase: Endemic
Disaggregated by: Other
Population group: Healthcare workers
Sample type: Hospital based
Sex: Unspecified
Sample size: 1077
Country: Nigeria
Location: Plateau State, Kaduna State
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 12
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 64
Country: Guinea
Location: Macenta
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 20
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 149
Country: Guinea
Location: Gueckedou
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 20
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 50
Country: Côte d'Ivoire
Location: Abidjan, Northeastern Region
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 3.8
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 480
Country: Ghana
Location: Tamale, Agogo, Kumasi
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 9.9
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 101
Country: Benin
Location: Central Region
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 10.3
Unit: Percentage (%)
Value type: Unspecified
Epidemic phase: Unspecified
Population group: General population
Sample type: Population based
Sex: Both
Minimum age: 18
Maximum age: 53
Sample size: 116
Country: Nigeria
Location: Southeast
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 29
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 25
Country: Nigeria
Location: Edo North, Central Senatorial District Of Edo State
Study period:  Nov 11 2005 to  Feb 02 2008
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgG
Parameter value: 1.8
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 8
CFR/IFR denominator: 451
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 451
Country: Nigeria
Location: Edo North, Central Senatorial District Of Edo State
Pathogen: Lassa mammarenavirus
Parameter class: Seroprevalence
Parameter type: Seroprevalence - IgM
Parameter value: 0
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 0
CFR/IFR denominator: 451
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Unspecified
Sample size: 451
Country: Nigeria
Location: Edo North, Central Senatorial District Of Edo State
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 61
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 29
Upper bound: 87
Bounds: 29 - 87
CFR/IFR numerator: 22
CFR/IFR denominator: 36
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Disaggregated by: Age, Other, Sex, Symptoms
Population group: Mixed groups
Sample type: Hospital based
Sex: Both
Sample size: 84
Country: Sierra Leone
Location: Bo District
Study period:  Apr 04 2011 to  Feb 02 2012
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 42
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 10
CFR/IFR denominator: 24
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Disaggregated by: Symptoms
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 24
Country: Sierra Leone
Location: Segbwema
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 63.2
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR numerator: 12
CFR/IFR denominator: 19
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 19
Country: Nigeria
Location: Ondo State
Study period: 1 Dec 12 2015 to 30 Apr 04 2016
Pathogen: Lassa mammarenavirus
Parameter class: Human delay
Parameter type: Human delay - symptom onset>admission to care
Parameter value: 2
Unit: Days
Value type: Median
Uncertainty type: Unspecified
Uncertainty lower value: 0
Uncertainty upper value: 17
Combined uncertainty: 0 - 17 (Unspecified)
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 19
Country: Nigeria
Location: Ondo State
Study period: 1 Dec 12 2015 to 30 Apr 04 2016
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 28
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 23
Upper bound: 44
Bounds: 23 - 44
CFR/IFR numerator: 18
CFR/IFR denominator: 64
CFR/IFR method: Unspecified
Epidemic phase: Unspecified
Disaggregated by: Sex
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Sample size: 908
Country: Nigeria
Location: Irrua
Study period:  Jan 01 2007 to  Dec 12 2007
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 43.9
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Population based
Sex: Unspecified
Country: Nigeria
Study period: 1 Jan 01 2017 to 25 Mar 03 2017
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 25.8
Unit: Percentage (%)
Value type: Unspecified
CFR/IFR method: Unspecified
Epidemic phase: Endemic
Population group: Persons under investigation
Sample type: Population based
Sex: Unspecified
Country: Nigeria
Study period: 1 Jan 01 2018 to 25 Mar 03 2018
Pathogen: Lassa mammarenavirus
Parameter class: Severity
Parameter type: Severity - case fatality rate (CFR)
Parameter value: 27
Unit: Percentage (%)
Value type: Unspecified
Lower bound: 21.9
Upper bound: 60
Bounds: 21.9 - 60
CFR/IFR numerator: 10
CFR/IFR denominator: 37
CFR/IFR method: Adjusted
Epidemic phase: Unspecified
Disaggregated by: Symptoms
Population group: Persons under investigation
Sample type: Hospital based
Sex: Both
Minimum age: 11
Maximum age: 61
Sample size: 37
Country: Nigeria
Location: Irrua
Study period:  Jul 07 2007 to  Apr 04 2009