Potential for international spread of wild poliovirus via travelers
dc.contributor | Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP | |
dc.contributor.author | WILDER-SMITH, Annelies | |
dc.contributor.author | LEONG, Wei-Yee | |
dc.contributor.author | LOPEZ, Luis Fernandez | |
dc.contributor.author | AMAKU, Marcos | |
dc.contributor.author | QUAM, Mikkel | |
dc.contributor.author | KHAN, Kamran | |
dc.contributor.author | MASSAD, Eduardo | |
dc.date.accessioned | 2015-10-26T16:28:11Z | |
dc.date.available | 2015-10-26T16:28:11Z | |
dc.date.issued | 2015 | |
dc.description.abstract | Background: The endgame of polio eradication is hampered by the international spread of poliovirus via travelers. In response to ongoing importations of poliovirus into polio-free countries, on 5 May 2014, WHO's Director-General declared the international spread of wild poliovirus a public health emergency of international concern. Our objective was to develop a mathematical model to estimate the international spread of polio infections. Methods: Our model took into account polio endemicity in polio-infected countries, population size, polio immunization coverage rates, infectious period, the asymptomatic-to-symptomatic ratio, and also the probability of a traveler being infectious at the time of travel. We applied our model to three scenarios: (1) number of exportations of both symptomatic and asymptomatic polio infections out of currently polio-infected countries, (2) the risk of spread of poliovirus to Saudi Arabia via Hajj pilgrims, and (3) the importation risk of poliovirus into India. Results: Our model estimated 665 polio exportations (>99 % of which were asymptomatic) from nine polio-infected countries in 2014, of which 78.3 % originated from Pakistan. Our model also estimated 21 importations of poliovirus into Saudi Arabia via Hajj pilgrims and 20 poliovirus infections imported to India in the same year. Conclusion: The extent of importations of asymptomatic and symptomatic polio infections is substantial. For countries that are vulnerable to polio outbreaks due to poor national polio immunization coverage rates, our newly developed model may help guide policy-makers to decide whether imposing an entry requirement in terms of proof of vaccination against polio would be justified. | |
dc.description.index | MEDLINE | |
dc.identifier.citation | BMC MEDICINE, v.13, 2015 | |
dc.identifier.doi | 10.1186/s12916-015-0363-y | |
dc.identifier.issn | 1741-7015 | |
dc.identifier.uri | https://observatorio.fm.usp.br/handle/OPI/11685 | |
dc.language.iso | eng | |
dc.publisher | BIOMED CENTRAL LTD | |
dc.relation.ispartof | BMC Medicine | |
dc.rights | openAccess | |
dc.rights.holder | Copyright BIOMED CENTRAL LTD | |
dc.subject | Poliomyelitis | |
dc.subject | Travel | |
dc.subject | Importation | |
dc.subject | International spread | |
dc.subject | Secondary cases | |
dc.subject | Polio vaccination | |
dc.subject | India | |
dc.subject | Hajj pilgrimage | |
dc.subject | Policy | |
dc.subject | Polio eradication | |
dc.subject | Mathematical model | |
dc.subject.other | poliomyelitis | |
dc.subject.other | surveillance | |
dc.subject.other | eradication | |
dc.subject.other | importation | |
dc.subject.other | worldwide | |
dc.subject.other | outbreak | |
dc.subject.other | progress | |
dc.subject.other | syria | |
dc.subject.wos | Medicine, General & Internal | |
dc.title | Potential for international spread of wild poliovirus via travelers | |
dc.type | article | |
dc.type.category | original article | |
dc.type.version | publishedVersion | |
dspace.entity.type | Publication | |
hcfmusp.affiliation.country | Alemanha | |
hcfmusp.affiliation.country | Singapura | |
hcfmusp.affiliation.country | Suécia | |
hcfmusp.affiliation.country | Canadá | |
hcfmusp.affiliation.countryiso | de | |
hcfmusp.affiliation.countryiso | sg | |
hcfmusp.affiliation.countryiso | se | |
hcfmusp.affiliation.countryiso | ca | |
hcfmusp.author.external | WILDER-SMITH, Annelies:Nanyang Technol Univ, Lee Kong Chian Sch Med, Singapore 308232, Singapore; Heidelberg Univ, Inst Publ Hlth, Heidelberg, Germany | |
hcfmusp.author.external | LEONG, Wei-Yee:Nanyang Technol Univ, Lee Kong Chian Sch Med, Singapore 308232, Singapore | |
hcfmusp.author.external | AMAKU, Marcos:Univ Sao Paulo, Fac Vet Med, Sao Paulo, Brazil | |
hcfmusp.author.external | QUAM, Mikkel:Umea Univ, Dept Publ Hlth & Clin Med Epidemiol & Global Hlth, Umea, Sweden | |
hcfmusp.author.external | KHAN, Kamran:St Michaels Hosp, Li Ka Shing Knowledge Inst, Toronto, ON M5B 1W8, Canada; Univ Toronto, Fac Med, Div Infect Dis, Toronto, ON, Canada | |
hcfmusp.citation.scopus | 40 | |
hcfmusp.contributor.author-fmusphc | LUIS FERNANDEZ LOPEZ | |
hcfmusp.contributor.author-fmusphc | EDUARDO MASSAD | |
hcfmusp.description.volume | 13 | |
hcfmusp.origem | WOS | |
hcfmusp.origem.pubmed | 26044336 | |
hcfmusp.origem.scopus | 2-s2.0-84935853548 | |
hcfmusp.origem.wos | WOS:000356483300001 | |
hcfmusp.publisher.city | LONDON | |
hcfmusp.publisher.country | ENGLAND | |
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hcfmusp.scopus.lastupdate | 2024-05-10 | |
relation.isAuthorOfPublication | 27185c98-10fa-4e47-b432-b0e1e576966c | |
relation.isAuthorOfPublication | 2d14cb40-bd10-4412-aeb3-ff717514d3af | |
relation.isAuthorOfPublication.latestForDiscovery | 27185c98-10fa-4e47-b432-b0e1e576966c |
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