Abstract:
BACKGROUND:Limited data exist on transmission dynamics and effectiveness of control measures for influenza in confined settings. OBJECTIVES:To investigate the transmission dynamics of a 2009 pandemic H1N1 influenza A outbreak aboard a Peruvian Navy ship and quantify the effectiveness of the implemented control measures. METHODS:We used surveillance data and a simple stochastic epidemic model to characterize and evaluate the effectiveness of control interventions implemented during an outbreak of 2009 pandemic H1N1 influenza A aboard a Peruvian Navy ship. RESULTS:The serological attack rate for the outbreak was 49·1%, with younger cadets and low-ranking officers at greater risk of infection than older, higher-ranking officers. Our transmission model yielded a good fit to the daily time series of new influenza cases by date of symptom onset. We estimated a reduction of 54·4% in the reproduction number during the period of intense control interventions. CONCLUSION:Our results indicate that the patient isolation strategy and other control measures put in place during the outbreak reduced the infectiousness of isolated individuals by 86·7%. Our findings support that early implementation of control interventions can limit the spread of influenza epidemics in confined settings.
journal_name
Influenza Other Respir Virusesjournal_title
Influenza and other respiratory virusesauthors
Vera DM,Hora RA,Murillo A,Wong JF,Torre AJ,Wang D,Boulay D,Hancock K,Katz JM,Ramos M,Loayza L,Quispe J,Reaves EJ,Bausch DG,Chowell G,Montgomery JMdoi
10.1111/irv.12240subject
Has Abstractpub_date
2014-05-01 00:00:00pages
353-9issue
3eissn
1750-2640issn
1750-2659journal_volume
8pub_type
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