Household Transmission of Pandemic (H1N1) 2009, San Antonio, Texas, USA, April–May 2009

Morgan, Oliver W.; Parks, Sharyn; Shim, Trudi; Blevins, Patricia A.; Lucas, Pauline M.; Sanchez, Roger; Walea, Nancy; Loustalot, Fleetwood; Duffy, Mark R.; Shim, Matthew J.; Guerra, Sandra; Guerra, Fernando; Mills, Gwen; Verani, Jennifer; Alsip, Bryan; Lindstrom, Stephen; Shu, Bo; Emery, Shannon; Cohen, Adam L.; Menon, Manoj; Fry, Alicia M.; Dawood, Fatimah; Fonseca, Vincent P.; Olsen, Sonja J.

Back to Previous Page

- Add this to...
- Twitter
- Facebook
- Google Bookmarks
- LinkedIn

Household Transmission of Pandemic (H1N1) 2009, San Antonio, Texas, USA, April–May 2009

Published Date:

Apr 2010

Source:

Emerg Infect Dis. 16(4):631-637.

[PDF-252.59 KB]

Details:

Personal Authors:

Morgan, Oliver W. ; Parks, Sharyn ; Shim, Trudi ; Blevins, Patricia A. ; Lucas, Pauline M. ; ... More ▼

Keywords:

[+]

Description:

To assess household transmission of pandemic (H1N1) 2009 in San Antonio, Texas, USA, during April 15-May 8, 2009, we investigated 77 households. The index case-patient was defined as the household member with the earliest onset date of symptoms of acute respiratory infection (ARI), influenza-like illness (ILI), or laboratory-confirmed pandemic (H1N1) 2009. Median interval between illness onset in index and secondary case-patients was 4 days (range 1-9 days); the index case-patient was likely to be < or =18 years of age (p = 0.034). The secondary attack rate was 4% for pandemic (H1N1) 2009, 9% for ILI, and 13% for ARI. The secondary attack rate was highest for children <5 years of age (8%-19%) and lowest for adults > or =50 years of age (4%-12%). Early in the outbreak, household transmission primarily occurred from children to other household members and was lower than the transmission rate for seasonal influenza.

Document Type:

Journal Article

Collection(s):

CDC Public Access
Emerging Infectious Diseases

Supporting Files:

	09-1658-F.gif	image/gif
	09-1658-F.jpg	image/jpeg
	09-1658-FA1.gif	image/gif
	09-1658-FA1.jpg	image/jpeg
	09-1658_finalR.nxml	text/plain
	license.txt	text/plain

No Related Documents.

You May Also Like:

Pandemic (H1N1) 2009 Virus in 3 Wildlife Species, San Diego, California, USA

Personal Author:

Schrenzel, Mark D.; Tucker, Tammy A.; Stalis, Ilse H.; Kagan, Rebecca A.; Burns, Russell P.; Denison, Amy M.; Drew, Clifton P.; Paddock, Christopher D.; Rideout, Bruce A.;

Published:

Apr 2011

Source:

Emerg Infect Dis. 17(4):747-749.

File Type:

[PDF - 162.21 KB]
Effects of Vaccination against Pandemic (H1N1) 2009 among Japanese Children

Personal Author:

Nishiura, Hiroshi; Oshitani, Hitoshi;

Published:

Apr 2011

Source:

Emerg Infect Dis. 17(4):746-747.

File Type:

[PDF - 85.06 KB]
Influenza A(H1N1)pdm09 during air travel

Personal Author:

Neatherlin, John; Cramer, Elaine H.; Dubray, Christine; Marienau, Karen J.; Russell, Michelle; Sun, Hong; Whaley, Melissa; Hancock, Kathy; Duong, Krista K.; Kirking, Hannah L.; Schembri, Christopher; Katz, Jacqueline M.; Cohen, Nicole J.; Fishbein, Daniel B.;

Published:

2013 Mar-Apr

Source:

Travel Med Infect Dis. 11(2):110-118.

Description:

The global spread of the influenza A(H1N1)pdm09 virus (pH1N1) associated with travelers from North America during the onset of the 2009 pandemic demonstrates the central role of international air travel in virus migration. To characterize risk factor...

File Type:

[PDF - 348.65 KB]
Intrahousehold Transmission of Pandemic (H1N1) 2009 Virus, Victoria, Australia

Personal Author:

van Gemert, Caroline; Hellard, Margaret; McBryde, Emma S.; Fielding, James; Spelman, Tim; Higgins, Nasra; Lester, Rosemary; Vally, Hassan; Bergeri, Isabel;

Published:

Sep 2011

Source:

Emerg Infect Dis. 17(9):1599-1607.

Description:

To examine intrahousehold secondary transmission of pandemic (H1N1) 2009 virus in households in Victoria, Australia, we conducted a retrospective cross-sectional study in late 2009. We randomly selected case-patients reported during May-June 2009 and...

File Type:

[PDF - 251.96 KB]
Use of Antiviral Drugs to Reduce Household Transmission of Pandemic (H1N1) 2009, United Kingdom1

Personal Author:

Pebody, Richard G.; Harris, Ross; Kafatos, George; Chamberland, Mary; Campbell, Colin; Nguyen-Van-Tam, Jonathan S.; McLean, Estelle; Andrews, Nick; White, Peter J.; Wynne-Evans, Edward; Green, Jon; Ellis, Joanna; Wreghitt, Tim; Bracebridge, Sam; Ihekweazu, Chikwe; Oliver, Isabel; Smith, Gillian; Hawkins, Colin; Salmon, Roland; Smyth, Brian; McMenamin, Jim; Zambon, Maria; Phin, Nick; Watson, John M.;

Published:

Jun 2011

Source:

Emerg Infect Dis. 17(6):990-999.

Description:

The United Kingdom implemented a containment strategy for pandemic (H1N1) 2009 through administering antiviral agents (AVs) to patients and their close contacts. This observational household cohort study describes the effect of AVs on household trans...

File Type:

[PDF - 341.02 KB]