TY - JOUR
T1 - Intrahousehold transmission of pandemic (H1N1) 2009 virus, Victoria, Australia
AU - van Gemert, Caroline
AU - Hellard, Margaret
AU - McBryde, Emma S.
AU - Fielding, James
AU - Spelman, Tim
AU - Higgins, Nasra
AU - Lester, Rosemary
AU - Vally, Hassan
AU - Bergeri, Isabel
PY - 2011/9
Y1 - 2011/9
N2 - 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 their household contacts. Information collected included household characteristics, use of prevention and control measures, and signs and symptoms. Secondary cases were defi ned as influenza-like illness in household contacts within the specifi ed period. Secondary transmission was identifi ed for 18 of 122 susceptible household contacts. To identify independent predictors of secondary transmission, we developed a model. Risk factors were concurrent quarantine with the household index case-patient, and a protective factor was antiviral prophylaxis. These findings show that timely provision of antiviral prophylaxis to household contacts, particularly when household members are concurrently quarantined during implementation of pandemic management strategies, delays or contains community transmission of pandemic (H1N1) 2009 virus.
AB - 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 their household contacts. Information collected included household characteristics, use of prevention and control measures, and signs and symptoms. Secondary cases were defi ned as influenza-like illness in household contacts within the specifi ed period. Secondary transmission was identifi ed for 18 of 122 susceptible household contacts. To identify independent predictors of secondary transmission, we developed a model. Risk factors were concurrent quarantine with the household index case-patient, and a protective factor was antiviral prophylaxis. These findings show that timely provision of antiviral prophylaxis to household contacts, particularly when household members are concurrently quarantined during implementation of pandemic management strategies, delays or contains community transmission of pandemic (H1N1) 2009 virus.
UR - http://www.scopus.com/inward/record.url?scp=80052148982&partnerID=8YFLogxK
U2 - 10.3201/eid1709.101948
DO - 10.3201/eid1709.101948
M3 - Article
SN - 1080-6040
VL - 17
SP - 1599
EP - 1607
JO - Emerging Infectious Diseases
JF - Emerging Infectious Diseases
IS - 9
ER -