Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010

Ndahwouh Talla Nzussouo; Jennifer Michalove; Ousmane M Diop; Richard Njouom; Maria de Lourdes Monteiro; Herve Kadjo Adje; Serge Manoncourt; Joseph Amankwa; Lamine Koivogui; Samba Sow; Mohamed Brahim Elkory; Jean-Marc Collard; Ibrahim Dalhatu; Mbayame Ndiaye Niang; Kathryn Lafond; Filomena Moniz; Daouda Coulibaly; Karl C Kronman; Buhari A Oyofo; William Ampofo; Boubou Tamboura; Ahmed Ould Bara; Jean-François Jusot; Ekanem Ekanem; Fatoumata Diène Sarr; Inzune Hwang; Claire Cornelius; Babajide Coker; Stephen Lindstrom; Richard Davis; Erica Dueger; Ann Moen; Marc-Alain Widdowson

doi:10.1093/infdis/jis572

Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010

Ndahwouh Talla Nzussouo, Jennifer Michalove, Ousmane M Diop, Richard Njouom, Maria de Lourdes Monteiro, Herve Kadjo Adje, Serge Manoncourt, Joseph Amankwa, Lamine Koivogui, Samba Sow, Mohamed Brahim Elkory, Jean-Marc Collard, Ibrahim Dalhatu, Mbayame Ndiaye Niang, Kathryn Lafond, Filomena Moniz, Daouda Coulibaly, Karl C Kronman, Buhari A Oyofo, William AmpofoBoubou Tamboura, Ahmed Ould Bara, Jean-François Jusot, Ekanem Ekanem, Fatoumata Diène Sarr, Inzune Hwang, Claire Cornelius, Babajide Coker, Stephen Lindstrom, Richard Davis, Erica Dueger, Ann Moen, Marc-Alain Widdowson

Institute of Tropical Medicine

Research output: Contribution to journal › A1: Web of Science-article › peer-review

Abstract

To understand 2009 pandemic influenza A virus subtype H1N1 (A[H1N1]pdm09) circulation in West Africa, we collected influenza surveillance data from ministries of health and influenza laboratories in 10 countries, including Cameroon, from 4 May 2009 through 3 April 2010. A total of 10,203 respiratory specimens were tested, of which 25% were positive for influenza virus. Until the end of December 2009, only 14% of all detected strains were A(H1N1)pdm09, but the frequency increased to 89% from January through 3 April 2010. Five West African countries did not report their first A(H1N1)pdm09 case until 6 months after the emergence of the pandemic in North America, in April 2009. The time from first detection of A(H1N1)pdm09 in a country to the time of A(H1N1)pdm09 predominance varied from 0 to 37 weeks. Seven countries did not report A(H1N1)pdm09 predominance until 2010. Introduction and transmission of A(H1N1)pdm09 were delayed in this region.

Original language	English
Journal	Journal of Infectious Diseases
Volume	206
Issue number	Suppl.1
Pages (from-to)	S101-S107
ISSN	0022-1899
DOIs	https://doi.org/10.1093/infdis/jis572
Publication status	Published - 2012

Keywords

Adult
Africa, Western/epidemiology
Child
Child, Preschool
Humans
Infant
Influenza A Virus, H1N1 Subtype/isolation & purification
Influenza, Human/epidemiology
Orthomyxoviridae
Pandemics
Time Factors

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10.1093/infdis/jis572

Cite this

Nzussouo, N. T., Michalove, J., Diop, O. M., Njouom, R., Monteiro, M. D. L., Adje, H. K., Manoncourt, S., Amankwa, J., Koivogui, L., Sow, S., Elkory, M. B., Collard, J.-M., Dalhatu, I., Niang, M. N., Lafond, K., Moniz, F., Coulibaly, D., Kronman, K. C., Oyofo, B. A., ... Widdowson, M.-A. (2012). Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010. Journal of Infectious Diseases, 206(Suppl.1), S101-S107. https://doi.org/10.1093/infdis/jis572

@article{862445a5b5124a8f83cfebc64e91d2f7,

title = "Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010",

abstract = "To understand 2009 pandemic influenza A virus subtype H1N1 (A[H1N1]pdm09) circulation in West Africa, we collected influenza surveillance data from ministries of health and influenza laboratories in 10 countries, including Cameroon, from 4 May 2009 through 3 April 2010. A total of 10,203 respiratory specimens were tested, of which 25% were positive for influenza virus. Until the end of December 2009, only 14% of all detected strains were A(H1N1)pdm09, but the frequency increased to 89% from January through 3 April 2010. Five West African countries did not report their first A(H1N1)pdm09 case until 6 months after the emergence of the pandemic in North America, in April 2009. The time from first detection of A(H1N1)pdm09 in a country to the time of A(H1N1)pdm09 predominance varied from 0 to 37 weeks. Seven countries did not report A(H1N1)pdm09 predominance until 2010. Introduction and transmission of A(H1N1)pdm09 were delayed in this region.",

keywords = "Adult, Africa, Western/epidemiology, Child, Child, Preschool, Humans, Infant, Influenza A Virus, H1N1 Subtype/isolation & purification, Influenza, Human/epidemiology, Orthomyxoviridae, Pandemics, Time Factors",

author = "Nzussouo, {Ndahwouh Talla} and Jennifer Michalove and Diop, {Ousmane M} and Richard Njouom and Monteiro, {Maria de Lourdes} and Adje, {Herve Kadjo} and Serge Manoncourt and Joseph Amankwa and Lamine Koivogui and Samba Sow and Elkory, {Mohamed Brahim} and Jean-Marc Collard and Ibrahim Dalhatu and Niang, {Mbayame Ndiaye} and Kathryn Lafond and Filomena Moniz and Daouda Coulibaly and Kronman, {Karl C} and Oyofo, {Buhari A} and William Ampofo and Boubou Tamboura and Bara, {Ahmed Ould} and Jean-Fran{\c c}ois Jusot and Ekanem Ekanem and Sarr, {Fatoumata Di{\`e}ne} and Inzune Hwang and Claire Cornelius and Babajide Coker and Stephen Lindstrom and Richard Davis and Erica Dueger and Ann Moen and Marc-Alain Widdowson",

year = "2012",

doi = "10.1093/infdis/jis572",

language = "English",

volume = "206",

pages = "S101--S107",

journal = "Journal of Infectious Diseases",

issn = "0022-1899",

publisher = "Oxford University Press",

number = "Suppl.1",

}

Nzussouo, NT, Michalove, J, Diop, OM, Njouom, R, Monteiro, MDL, Adje, HK, Manoncourt, S, Amankwa, J, Koivogui, L, Sow, S, Elkory, MB, Collard, J-M, Dalhatu, I, Niang, MN, Lafond, K, Moniz, F, Coulibaly, D, Kronman, KC, Oyofo, BA, Ampofo, W, Tamboura, B, Bara, AO, Jusot, J-F, Ekanem, E, Sarr, FD, Hwang, I, Cornelius, C, Coker, B, Lindstrom, S, Davis, R, Dueger, E, Moen, A & Widdowson, M-A 2012, 'Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010', Journal of Infectious Diseases, vol. 206, no. Suppl.1, pp. S101-S107. https://doi.org/10.1093/infdis/jis572

TY - JOUR

T1 - Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010

AU - Nzussouo, Ndahwouh Talla

AU - Michalove, Jennifer

AU - Diop, Ousmane M

AU - Njouom, Richard

AU - Monteiro, Maria de Lourdes

AU - Adje, Herve Kadjo

AU - Manoncourt, Serge

AU - Amankwa, Joseph

AU - Koivogui, Lamine

AU - Sow, Samba

AU - Elkory, Mohamed Brahim

AU - Collard, Jean-Marc

AU - Dalhatu, Ibrahim

AU - Niang, Mbayame Ndiaye

AU - Lafond, Kathryn

AU - Moniz, Filomena

AU - Coulibaly, Daouda

AU - Kronman, Karl C

AU - Oyofo, Buhari A

AU - Ampofo, William

AU - Tamboura, Boubou

AU - Bara, Ahmed Ould

AU - Jusot, Jean-François

AU - Ekanem, Ekanem

AU - Sarr, Fatoumata Diène

AU - Hwang, Inzune

AU - Cornelius, Claire

AU - Coker, Babajide

AU - Lindstrom, Stephen

AU - Davis, Richard

AU - Dueger, Erica

AU - Moen, Ann

AU - Widdowson, Marc-Alain

PY - 2012

Y1 - 2012

N2 - To understand 2009 pandemic influenza A virus subtype H1N1 (A[H1N1]pdm09) circulation in West Africa, we collected influenza surveillance data from ministries of health and influenza laboratories in 10 countries, including Cameroon, from 4 May 2009 through 3 April 2010. A total of 10,203 respiratory specimens were tested, of which 25% were positive for influenza virus. Until the end of December 2009, only 14% of all detected strains were A(H1N1)pdm09, but the frequency increased to 89% from January through 3 April 2010. Five West African countries did not report their first A(H1N1)pdm09 case until 6 months after the emergence of the pandemic in North America, in April 2009. The time from first detection of A(H1N1)pdm09 in a country to the time of A(H1N1)pdm09 predominance varied from 0 to 37 weeks. Seven countries did not report A(H1N1)pdm09 predominance until 2010. Introduction and transmission of A(H1N1)pdm09 were delayed in this region.

AB - To understand 2009 pandemic influenza A virus subtype H1N1 (A[H1N1]pdm09) circulation in West Africa, we collected influenza surveillance data from ministries of health and influenza laboratories in 10 countries, including Cameroon, from 4 May 2009 through 3 April 2010. A total of 10,203 respiratory specimens were tested, of which 25% were positive for influenza virus. Until the end of December 2009, only 14% of all detected strains were A(H1N1)pdm09, but the frequency increased to 89% from January through 3 April 2010. Five West African countries did not report their first A(H1N1)pdm09 case until 6 months after the emergence of the pandemic in North America, in April 2009. The time from first detection of A(H1N1)pdm09 in a country to the time of A(H1N1)pdm09 predominance varied from 0 to 37 weeks. Seven countries did not report A(H1N1)pdm09 predominance until 2010. Introduction and transmission of A(H1N1)pdm09 were delayed in this region.

KW - Adult

KW - Africa, Western/epidemiology

KW - Child

KW - Child, Preschool

KW - Humans

KW - Infant

KW - Influenza A Virus, H1N1 Subtype/isolation & purification

KW - Influenza, Human/epidemiology

KW - Orthomyxoviridae

KW - Pandemics

KW - Time Factors

U2 - 10.1093/infdis/jis572

DO - 10.1093/infdis/jis572

M3 - A1: Web of Science-article

C2 - 23169954

SN - 0022-1899

VL - 206

SP - S101-S107

JO - Journal of Infectious Diseases

JF - Journal of Infectious Diseases

IS - Suppl.1

ER -

Delayed 2009 pandemic influenza A virus subtype H1N1 circulation in West Africa, May 2009-April 2010

Abstract

Keywords

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