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Timely identification of optimal control strategies for emerging infectious diseases.

Identifieur interne : 001752 ( PubMed/Checkpoint ); précédent : 001751; suivant : 001753

Timely identification of optimal control strategies for emerging infectious diseases.

Auteurs : Zhilan Feng [États-Unis] ; Yiding Yang ; Dashun Xu ; Pei Zhang ; Mary Mason Mccauley ; John W. Glasser

Source :

RBID : pubmed:19289133

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English descriptors

Abstract

Health authorities must rely on quarantine, isolation, and other non-pharmaceutical interventions to contain outbreaks of newly emerging human diseases.

DOI: 10.1016/j.jtbi.2009.03.006
PubMed: 19289133


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<term>Communicable Diseases, Emerging (prevention & control)</term>
<term>Communicable Diseases, Emerging (transmission)</term>
<term>Computer Simulation</term>
<term>Contact Tracing</term>
<term>Disease Outbreaks (prevention & control)</term>
<term>Humans</term>
<term>Infection Control (methods)</term>
<term>Models, Theoretical</term>
<term>Public Health</term>
<term>Quarantine</term>
<term>SARS Virus (pathogenicity)</term>
<term>Severe Acute Respiratory Syndrome (prevention & control)</term>
<term>Severe Acute Respiratory Syndrome (transmission)</term>
<term>Time Factors</term>
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<term>Facteurs temps</term>
<term>Flambées de maladies ()</term>
<term>Humains</term>
<term>Lutte contre l'infection ()</term>
<term>Maladies transmissibles émergentes ()</term>
<term>Maladies transmissibles émergentes (transmission)</term>
<term>Modèles théoriques</term>
<term>Quarantaine</term>
<term>Santé publique</term>
<term>Simulation numérique</term>
<term>Syndrome respiratoire aigu sévère ()</term>
<term>Syndrome respiratoire aigu sévère (transmission)</term>
<term>Traçage des contacts</term>
<term>Virus du SRAS (pathogénicité)</term>
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<term>Infection Control</term>
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<term>Virus du SRAS</term>
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<term>Severe Acute Respiratory Syndrome</term>
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<term>Communicable Diseases, Emerging</term>
<term>Severe Acute Respiratory Syndrome</term>
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<div type="abstract" xml:lang="en">Health authorities must rely on quarantine, isolation, and other non-pharmaceutical interventions to contain outbreaks of newly emerging human diseases.</div>
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<AbstractText Label="METHODS" NlmCategory="METHODS">We modeled a generic disease caused by a pathogen apparently transmitted by close interpersonal contact, but about which little else is known. In our model, people may be infectious while incubating or during their prodrome or acute illness. We derived an expression for Re, the reproduction number, took its partial derivatives with respect to control parameters, and encoded these analytical results in a user-friendly Mathematica notebook. With biological parameters for SARS estimated from the initial case series in Hong Kong and infection rates from hospitalizations in Singapore, we determined Re's sensitivity to control parameters.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">Stage-specific infection rate estimates from cases hospitalized before quarantine began exceed those from the entire outbreak, but are qualitatively similar: infectiousness was negligible until symptom onset, and increased 10-fold from prodrome to acute illness. Given such information, authorities might instead have emphasized a strategy whose efficiency more than compensates for any possible reduction in efficacy.</AbstractText>
<AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">In future outbreaks of new human diseases transmitted via close interpersonal contact, it should be possible to identify the optimal intervention early enough to facilitate effective decision-making.</AbstractText>
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