Probabilistic modeling for an integrated temporary acquired immunity with norovirus epidemiological data

Emmanuel de-Graft Johnson Owusu-Ansah*, Benedict Barnes, Robert Abaidoo, Hald Tine, Anders Dalsgaard, Anders Permin, Torben Wilde Schou

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

92 Downloads (Pure)

Abstract

Integration of acquired immunity into microbial risk assessment for illness incidence is of no doubt essential for the study of susceptibility to illness. In this study, a probabilistic model was set up as dose response for infection and a mathematical derivation was carried out by integrating immunity to obtain probability of illness models. Temporary acquire immunity from epidemiology studies which includes six different Norovirus transmission scenarios such as symptomatic individuals infectious, pre- and post-symptomatic infectiousness (low and high), innate genetic resistance, genogroup 2 type 4 and those with no immune boosting by asymptomatic infection were evaluated. Simulated results on illness inflation factor as a function of dose and exposure indicated that high frequency exposures had immense immunity build up even at high dose levels; hence minimized the probability of illness. Using Norovirus transmission dynamics data, results showed, and immunity included models had a reduction of 2-6 logs of magnitude difference in disease burden for both population and individual probable illness incidence. Additionally, the magnitude order of illness for each dose response remained largely the same for all transmission scenarios; symptomatic infectiousness and no immune boosting after asymptomatic infectiousness also remained the same throughout. With integration of epidemiological data on acquired immunity into the risk assessment, more realistic results were achieved signifying an overestimation of probable risk of illness when epidemiological immunity data are not included. This finding supported the call for rigorous integration of temporary acquired immunity in dose-response in all microbial risk assessments.
Original languageEnglish
JournalInfectious Disease Modelling
Volume4
Pages (from-to)99-114
ISSN2468-0427
DOIs
Publication statusPublished - 2019

Keywords

  • Immunity integrated modeling
  • Probabilistic modeling
  • Quantitative risk assessment

Cite this

Owusu-Ansah, Emmanuel de-Graft Johnson ; Barnes, Benedict ; Abaidoo, Robert ; Tine, Hald ; Dalsgaard, Anders ; Permin, Anders ; Schou, Torben Wilde. / Probabilistic modeling for an integrated temporary acquired immunity with norovirus epidemiological data. In: Infectious Disease Modelling. 2019 ; Vol. 4. pp. 99-114.
@article{4270b10a92f248cb9a4d545091f82c88,
title = "Probabilistic modeling for an integrated temporary acquired immunity with norovirus epidemiological data",
abstract = "Integration of acquired immunity into microbial risk assessment for illness incidence is of no doubt essential for the study of susceptibility to illness. In this study, a probabilistic model was set up as dose response for infection and a mathematical derivation was carried out by integrating immunity to obtain probability of illness models. Temporary acquire immunity from epidemiology studies which includes six different Norovirus transmission scenarios such as symptomatic individuals infectious, pre- and post-symptomatic infectiousness (low and high), innate genetic resistance, genogroup 2 type 4 and those with no immune boosting by asymptomatic infection were evaluated. Simulated results on illness inflation factor as a function of dose and exposure indicated that high frequency exposures had immense immunity build up even at high dose levels; hence minimized the probability of illness. Using Norovirus transmission dynamics data, results showed, and immunity included models had a reduction of 2-6 logs of magnitude difference in disease burden for both population and individual probable illness incidence. Additionally, the magnitude order of illness for each dose response remained largely the same for all transmission scenarios; symptomatic infectiousness and no immune boosting after asymptomatic infectiousness also remained the same throughout. With integration of epidemiological data on acquired immunity into the risk assessment, more realistic results were achieved signifying an overestimation of probable risk of illness when epidemiological immunity data are not included. This finding supported the call for rigorous integration of temporary acquired immunity in dose-response in all microbial risk assessments.",
keywords = "Immunity integrated modeling, Probabilistic modeling, Quantitative risk assessment",
author = "Owusu-Ansah, {Emmanuel de-Graft Johnson} and Benedict Barnes and Robert Abaidoo and Hald Tine and Anders Dalsgaard and Anders Permin and Schou, {Torben Wilde}",
year = "2019",
doi = "10.1016/j.idm.2019.04.005",
language = "English",
volume = "4",
pages = "99--114",
journal = "Infectious Disease Modelling",
issn = "2468-0427",
publisher = "KeAi Publishing Communications Ltd.",

}

Probabilistic modeling for an integrated temporary acquired immunity with norovirus epidemiological data. / Owusu-Ansah, Emmanuel de-Graft Johnson; Barnes, Benedict; Abaidoo, Robert; Tine, Hald; Dalsgaard, Anders; Permin, Anders; Schou, Torben Wilde.

In: Infectious Disease Modelling, Vol. 4, 2019, p. 99-114.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Probabilistic modeling for an integrated temporary acquired immunity with norovirus epidemiological data

AU - Owusu-Ansah, Emmanuel de-Graft Johnson

AU - Barnes, Benedict

AU - Abaidoo, Robert

AU - Tine, Hald

AU - Dalsgaard, Anders

AU - Permin, Anders

AU - Schou, Torben Wilde

PY - 2019

Y1 - 2019

N2 - Integration of acquired immunity into microbial risk assessment for illness incidence is of no doubt essential for the study of susceptibility to illness. In this study, a probabilistic model was set up as dose response for infection and a mathematical derivation was carried out by integrating immunity to obtain probability of illness models. Temporary acquire immunity from epidemiology studies which includes six different Norovirus transmission scenarios such as symptomatic individuals infectious, pre- and post-symptomatic infectiousness (low and high), innate genetic resistance, genogroup 2 type 4 and those with no immune boosting by asymptomatic infection were evaluated. Simulated results on illness inflation factor as a function of dose and exposure indicated that high frequency exposures had immense immunity build up even at high dose levels; hence minimized the probability of illness. Using Norovirus transmission dynamics data, results showed, and immunity included models had a reduction of 2-6 logs of magnitude difference in disease burden for both population and individual probable illness incidence. Additionally, the magnitude order of illness for each dose response remained largely the same for all transmission scenarios; symptomatic infectiousness and no immune boosting after asymptomatic infectiousness also remained the same throughout. With integration of epidemiological data on acquired immunity into the risk assessment, more realistic results were achieved signifying an overestimation of probable risk of illness when epidemiological immunity data are not included. This finding supported the call for rigorous integration of temporary acquired immunity in dose-response in all microbial risk assessments.

AB - Integration of acquired immunity into microbial risk assessment for illness incidence is of no doubt essential for the study of susceptibility to illness. In this study, a probabilistic model was set up as dose response for infection and a mathematical derivation was carried out by integrating immunity to obtain probability of illness models. Temporary acquire immunity from epidemiology studies which includes six different Norovirus transmission scenarios such as symptomatic individuals infectious, pre- and post-symptomatic infectiousness (low and high), innate genetic resistance, genogroup 2 type 4 and those with no immune boosting by asymptomatic infection were evaluated. Simulated results on illness inflation factor as a function of dose and exposure indicated that high frequency exposures had immense immunity build up even at high dose levels; hence minimized the probability of illness. Using Norovirus transmission dynamics data, results showed, and immunity included models had a reduction of 2-6 logs of magnitude difference in disease burden for both population and individual probable illness incidence. Additionally, the magnitude order of illness for each dose response remained largely the same for all transmission scenarios; symptomatic infectiousness and no immune boosting after asymptomatic infectiousness also remained the same throughout. With integration of epidemiological data on acquired immunity into the risk assessment, more realistic results were achieved signifying an overestimation of probable risk of illness when epidemiological immunity data are not included. This finding supported the call for rigorous integration of temporary acquired immunity in dose-response in all microbial risk assessments.

KW - Immunity integrated modeling

KW - Probabilistic modeling

KW - Quantitative risk assessment

U2 - 10.1016/j.idm.2019.04.005

DO - 10.1016/j.idm.2019.04.005

M3 - Journal article

VL - 4

SP - 99

EP - 114

JO - Infectious Disease Modelling

JF - Infectious Disease Modelling

SN - 2468-0427

ER -