Antiviral treatment for the control of pandemic influenza: some logistical constraints.

Disease control programmes for an influenza pandemic will rely initially on the deployment of antiviral drugs such as Tamiflu, until a vaccine becomes available. However, such control programmes may be severely hampered by logistical constraints such as a finite stockpile of drugs and a limit on the...

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Main Authors: Arinaminpathy, N, Mclean, A
Format: Journal article
Language:English
Published: 2008
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author Arinaminpathy, N
Mclean, A
author_facet Arinaminpathy, N
Mclean, A
author_sort Arinaminpathy, N
collection OXFORD
description Disease control programmes for an influenza pandemic will rely initially on the deployment of antiviral drugs such as Tamiflu, until a vaccine becomes available. However, such control programmes may be severely hampered by logistical constraints such as a finite stockpile of drugs and a limit on the distribution rate. We study the effects of such constraints using a compartmental modelling approach. We find that the most aggressive possible antiviral programme minimizes the final epidemic size, even if this should lead to premature stockpile run-out. Moreover, if the basic reproductive number R(0) is not too high, such a policy can avoid run-out altogether. However, where run-out would occur, such benefits must be weighed against the possibility of a higher epidemic peak than if a more conservative policy were followed. Where there is a maximum number of treatment courses that can be dispensed per day, reflecting a manpower limit on antiviral distribution, our results suggest that such a constraint is unlikely to have a significant impact (i.e. increasing the final epidemic size by more than 10%), as long as drug courses sufficient to treat at least 6% of the population can be dispensed per day.
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spelling oxford-uuid:d16ecb26-b55a-4c3b-8e5f-7b6858705dce2022-03-27T07:56:57ZAntiviral treatment for the control of pandemic influenza: some logistical constraints.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d16ecb26-b55a-4c3b-8e5f-7b6858705dceEnglishSymplectic Elements at Oxford2008Arinaminpathy, NMclean, ADisease control programmes for an influenza pandemic will rely initially on the deployment of antiviral drugs such as Tamiflu, until a vaccine becomes available. However, such control programmes may be severely hampered by logistical constraints such as a finite stockpile of drugs and a limit on the distribution rate. We study the effects of such constraints using a compartmental modelling approach. We find that the most aggressive possible antiviral programme minimizes the final epidemic size, even if this should lead to premature stockpile run-out. Moreover, if the basic reproductive number R(0) is not too high, such a policy can avoid run-out altogether. However, where run-out would occur, such benefits must be weighed against the possibility of a higher epidemic peak than if a more conservative policy were followed. Where there is a maximum number of treatment courses that can be dispensed per day, reflecting a manpower limit on antiviral distribution, our results suggest that such a constraint is unlikely to have a significant impact (i.e. increasing the final epidemic size by more than 10%), as long as drug courses sufficient to treat at least 6% of the population can be dispensed per day.
spellingShingle Arinaminpathy, N
Mclean, A
Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title_full Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title_fullStr Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title_full_unstemmed Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title_short Antiviral treatment for the control of pandemic influenza: some logistical constraints.
title_sort antiviral treatment for the control of pandemic influenza some logistical constraints
work_keys_str_mv AT arinaminpathyn antiviraltreatmentforthecontrolofpandemicinfluenzasomelogisticalconstraints
AT mcleana antiviraltreatmentforthecontrolofpandemicinfluenzasomelogisticalconstraints