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Assessing the impact of public health interventions on the transmission of pandemic H1N1 influenza a virus aboard a Peruvian navy ship.
Influenza Other Respir Viruses. 2014 May; 8(3):353-9.IO

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.

Authors+Show Affiliations

US Naval Medical Research Unit No. 6, Lima, Peru.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24506160

Citation

Vera, Delphis M., et al. "Assessing the Impact of Public Health Interventions On the Transmission of Pandemic H1N1 Influenza a Virus Aboard a Peruvian Navy Ship." Influenza and Other Respiratory Viruses, vol. 8, no. 3, 2014, pp. 353-9.
Vera DM, Hora RA, Murillo A, et al. Assessing the impact of public health interventions on the transmission of pandemic H1N1 influenza a virus aboard a Peruvian navy ship. Influenza Other Respir Viruses. 2014;8(3):353-9.
Vera, D. M., Hora, R. A., Murillo, A., Wong, J. F., Torre, A. J., Wang, D., Boulay, D., Hancock, K., Katz, J. M., Ramos, M., Loayza, L., Quispe, J., Reaves, E. J., Bausch, D. G., Chowell, G., & Montgomery, J. M. (2014). Assessing the impact of public health interventions on the transmission of pandemic H1N1 influenza a virus aboard a Peruvian navy ship. Influenza and Other Respiratory Viruses, 8(3), 353-9. https://doi.org/10.1111/irv.12240
Vera DM, et al. Assessing the Impact of Public Health Interventions On the Transmission of Pandemic H1N1 Influenza a Virus Aboard a Peruvian Navy Ship. Influenza Other Respir Viruses. 2014;8(3):353-9. PubMed PMID: 24506160.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessing the impact of public health interventions on the transmission of pandemic H1N1 influenza a virus aboard a Peruvian navy ship. AU - Vera,Delphis M, AU - Hora,Ricardo A, AU - Murillo,Anarina, AU - Wong,Juan F, AU - Torre,Armando J, AU - Wang,David, AU - Boulay,Darbi, AU - Hancock,Kathy, AU - Katz,Jacqueline M, AU - Ramos,Mariana, AU - Loayza,Luis, AU - Quispe,Jose, AU - Reaves,Erik J, AU - Bausch,Daniel G, AU - Chowell,Gerardo, AU - Montgomery,Joel M, Y1 - 2014/02/10/ PY - 2014/01/13/accepted PY - 2014/2/11/entrez PY - 2014/2/11/pubmed PY - 2014/12/15/medline KW - Disease outbreak KW - Peru KW - influenza KW - military personnel KW - ships KW - transmission SP - 353 EP - 9 JF - Influenza and other respiratory viruses JO - Influenza Other Respir Viruses VL - 8 IS - 3 N2 - 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. SN - 1750-2659 UR - https://www.unboundmedicine.com/medline/citation/24506160/Assessing_the_impact_of_public_health_interventions_on_the_transmission_of_pandemic_H1N1_influenza_a_virus_aboard_a_Peruvian_navy_ship_ L2 - https://doi.org/10.1111/irv.12240 DB - PRIME DP - Unbound Medicine ER -