Emergence, Epidemiology, and Transmission Dynamics of 2009 Pandemic A/H1N1 Influenza in Kampala, Uganda, 2009-2015.
Identifieur interne : 000290 ( PubMed/Checkpoint ); précédent : 000289; suivant : 000291Emergence, Epidemiology, and Transmission Dynamics of 2009 Pandemic A/H1N1 Influenza in Kampala, Uganda, 2009-2015.
Auteurs : Matthew J. Cummings [États-Unis] ; Barnabas Bakamutumaho [Ouganda] ; Wan Yang [États-Unis] ; Joseph F. Wamala [Soudan du Sud] ; John Kayiwa [Ouganda] ; Nicholas Owor [Ouganda] ; Barbara Namagambo [Ouganda] ; Timothy Byaruhanga [Ouganda] ; Allison Wolf [États-Unis] ; Julius J. Lutwama [Ouganda] ; Jeffrey Shaman [États-Unis] ; Max R. O'Donnell [États-Unis]Source :
- The American journal of tropical medicine and hygiene [ 1476-1645 ] ; 2018.
Descripteurs français
- KwdFr :
- Adolescent, Adulte, Adulte d'âge moyen, Enfant, Enfant d'âge préscolaire, Facteurs de l'âge, Facteurs de risque, Femelle, Grippe humaine (transmission), Grippe humaine (épidémiologie), Humains, Jeune adulte, Mâle, Nourrisson, Ouganda (épidémiologie), Pandémies (), Population urbaine (), Saisons, Sous-type H1N1 du virus de la grippe A, Surveillance sentinelle.
- MESH :
- épidémiologie : Grippe humaine, Ouganda.
- Adolescent, Adulte, Adulte d'âge moyen, Enfant, Enfant d'âge préscolaire, Facteurs de l'âge, Facteurs de risque, Femelle, Humains, Jeune adulte, Mâle, Nourrisson, Pandémies, Population urbaine, Saisons, Sous-type H1N1 du virus de la grippe A, Surveillance sentinelle.
English descriptors
- KwdEn :
- Adolescent, Adult, Age Factors, Child, Child, Preschool, Female, Humans, Infant, Influenza A Virus, H1N1 Subtype, Influenza, Human (epidemiology), Influenza, Human (transmission), Male, Middle Aged, Pandemics (statistics & numerical data), Risk Factors, Seasons, Sentinel Surveillance, Uganda (epidemiology), Urban Population (statistics & numerical data), Young Adult.
- MESH :
- epidemiology : Influenza, Human, Uganda.
- statistics & numerical data : Pandemics, Urban Population.
- transmission : Influenza, Human.
- Adolescent, Adult, Age Factors, Child, Child, Preschool, Female, Humans, Infant, Influenza A Virus, H1N1 Subtype, Male, Middle Aged, Risk Factors, Seasons, Sentinel Surveillance, Young Adult.
Abstract
In sub-Saharan Africa, little is known about the epidemiology of pandemic-prone influenza viruses in urban settings. Using data from a prospective sentinel surveillance network, we characterized the emergence, epidemiology, and transmission dynamics of 2009 pandemic A/H1N1 influenza (H1N1pdm09) in Kampala, Uganda. After virus introduction via international air travel from England in June 2009, we estimated the basic reproductive number in Kampala to be 1.06-1.13, corresponding to attack rates of 12-22%. We subsequently identified 613 cases of influenza in Kampala from 2009 to 2015, of which 191 (31.2%) were infected with H1N1pdm09. Patients infected with H1N1pdm09 were more likely to be older adult (ages 35-64) males with illness onset during rainy season months. Urban settings in sub-Saharan Africa are vulnerable to importation and intense transmission of pandemic-prone influenza viruses. Enhanced surveillance and influenza pandemic preparedness in these settings is needed.
DOI: 10.4269/ajtmh.17-0524
PubMed: 29141723
Affiliations:
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<front><div type="abstract" xml:lang="en">In sub-Saharan Africa, little is known about the epidemiology of pandemic-prone influenza viruses in urban settings. Using data from a prospective sentinel surveillance network, we characterized the emergence, epidemiology, and transmission dynamics of 2009 pandemic A/H1N1 influenza (H1N1pdm09) in Kampala, Uganda. After virus introduction via international air travel from England in June 2009, we estimated the basic reproductive number in Kampala to be 1.06-1.13, corresponding to attack rates of 12-22%. We subsequently identified 613 cases of influenza in Kampala from 2009 to 2015, of which 191 (31.2%) were infected with H1N1pdm09. Patients infected with H1N1pdm09 were more likely to be older adult (ages 35-64) males with illness onset during rainy season months. Urban settings in sub-Saharan Africa are vulnerable to importation and intense transmission of pandemic-prone influenza viruses. Enhanced surveillance and influenza pandemic preparedness in these settings is needed.</div>
</front>
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<ArticleTitle>Emergence, Epidemiology, and Transmission Dynamics of 2009 Pandemic A/H1N1 Influenza in Kampala, Uganda, 2009-2015.</ArticleTitle>
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<Abstract><AbstractText>In sub-Saharan Africa, little is known about the epidemiology of pandemic-prone influenza viruses in urban settings. Using data from a prospective sentinel surveillance network, we characterized the emergence, epidemiology, and transmission dynamics of 2009 pandemic A/H1N1 influenza (H1N1pdm09) in Kampala, Uganda. After virus introduction via international air travel from England in June 2009, we estimated the basic reproductive number in Kampala to be 1.06-1.13, corresponding to attack rates of 12-22%. We subsequently identified 613 cases of influenza in Kampala from 2009 to 2015, of which 191 (31.2%) were infected with H1N1pdm09. Patients infected with H1N1pdm09 were more likely to be older adult (ages 35-64) males with illness onset during rainy season months. Urban settings in sub-Saharan Africa are vulnerable to importation and intense transmission of pandemic-prone influenza viruses. Enhanced surveillance and influenza pandemic preparedness in these settings is needed.</AbstractText>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Cummings</LastName>
<ForeName>Matthew J</ForeName>
<Initials>MJ</Initials>
<AffiliationInfo><Affiliation>Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Medical Center, New York.</Affiliation>
</AffiliationInfo>
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<ForeName>Barnabas</ForeName>
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<AffiliationInfo><Affiliation>National Influenza Center, Uganda Virus Research Institute, Entebbe, Uganda.</Affiliation>
</AffiliationInfo>
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<Author ValidYN="Y"><LastName>Yang</LastName>
<ForeName>Wan</ForeName>
<Initials>W</Initials>
<AffiliationInfo><Affiliation>Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York.</Affiliation>
</AffiliationInfo>
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<Author ValidYN="Y"><LastName>Wamala</LastName>
<ForeName>Joseph F</ForeName>
<Initials>JF</Initials>
<AffiliationInfo><Affiliation>South Sudan Country Office, World Health Organization, Juba, South Sudan.</Affiliation>
</AffiliationInfo>
<AffiliationInfo><Affiliation>Epidemiology and Surveillance Division, Ministry of Health, Kampala, Uganda.</Affiliation>
</AffiliationInfo>
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<Author ValidYN="Y"><LastName>Kayiwa</LastName>
<ForeName>John</ForeName>
<Initials>J</Initials>
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</Author>
<Author ValidYN="Y"><LastName>Owor</LastName>
<ForeName>Nicholas</ForeName>
<Initials>N</Initials>
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</AffiliationInfo>
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<Initials>B</Initials>
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</AffiliationInfo>
</Author>
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<Initials>T</Initials>
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<ForeName>Allison</ForeName>
<Initials>A</Initials>
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<Initials>JJ</Initials>
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<ForeName>Jeffrey</ForeName>
<Initials>J</Initials>
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<ForeName>Max R</ForeName>
<Initials>MR</Initials>
<AffiliationInfo><Affiliation>Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York.</Affiliation>
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<affiliations><list><country><li>Ouganda</li>
<li>Soudan du Sud</li>
<li>États-Unis</li>
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<name sortKey="Lutwama, Julius J" sort="Lutwama, Julius J" uniqKey="Lutwama J" first="Julius J" last="Lutwama">Julius J. Lutwama</name>
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<name sortKey="Owor, Nicholas" sort="Owor, Nicholas" uniqKey="Owor N" first="Nicholas" last="Owor">Nicholas Owor</name>
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<country name="Soudan du Sud"><noRegion><name sortKey="Wamala, Joseph F" sort="Wamala, Joseph F" uniqKey="Wamala J" first="Joseph F" last="Wamala">Joseph F. Wamala</name>
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