TY - JOUR
T1 - Low seroprotection against preseasonal influenza local strains in children might predict the upcoming epidemic influenza strains
AU - Su, Wei Ju
AU - Shao, Pei Lan
AU - Liu, Ming Tsan
AU - Liu, Ding Ping
AU - Huang, Kuo Chin
AU - Chang, Luan Yin
AU - Lu, Chun Yi
AU - Wang, Jen Ren
AU - Shih, Shin Ru
AU - Huang, Daniel Tsung Ning
AU - Chi, Hsin
AU - Huang, Li Min
PY - 2010/7/15
Y1 - 2010/7/15
N2 - Background. Our objective was to determine the serological signals that indicated the possible dominant circulating influenza virus subtypes for the coming influenza seasons. Methods. Healthy children 6 months through 5 years of age, adults 18-60 years of age, and elderly adults >60 years of age were recruited to receive seasonal trivalent inactivated influenza vaccinations from October through December during the 2006-2007 and 2008-2009 seasons. Paired serum samples were collected at baseline and at 3 weeks after vaccination. Using a hemagglutination inhibition (HAI) assay, we measured antibody responses to local influenza strains circulating early in October, before each winter influenza season. Results. A total of 301 subjects were tested for antibody to local strains (80, 120, and 101 subjects in the 2006-2007, 2007-2008, and 2008-2009 seasons, respectively). The dominant winter influenza strains in Taiwan were B/Malaysia/2506/2004-like in the 2006-2007 season, A/Brisbane/59/2007-like virus (H1N1) in the 2007-2008 season, and A/Brisbane/59/2007-like virus (H1N1) in the 2008-2009 season. The group with the lowest number of subjects with an HAI titer of ≥40 at baseline was children with antibody against the B/Taiwan/0050/2006 in the 2006-2007 season, A/Taiwan/785/2006 (H1N1) in 2007-2008 season, and A/Taiwan/951/2007 (H1N1) in 2008- 2009 season. The emergence of these viruses correlated well with the circulating influenza subtype in the following winter peak seasons. Conclusions. Low seroprotection rate among children against a specific locally circulating influenza strain might predict the dominantly circulating subtype of influenza virus in the coming winter season. A year-end preseasonal serological survey of children could provide valuable information about the possible circulating strain and tailor the disease-control strategy accordingly.
AB - Background. Our objective was to determine the serological signals that indicated the possible dominant circulating influenza virus subtypes for the coming influenza seasons. Methods. Healthy children 6 months through 5 years of age, adults 18-60 years of age, and elderly adults >60 years of age were recruited to receive seasonal trivalent inactivated influenza vaccinations from October through December during the 2006-2007 and 2008-2009 seasons. Paired serum samples were collected at baseline and at 3 weeks after vaccination. Using a hemagglutination inhibition (HAI) assay, we measured antibody responses to local influenza strains circulating early in October, before each winter influenza season. Results. A total of 301 subjects were tested for antibody to local strains (80, 120, and 101 subjects in the 2006-2007, 2007-2008, and 2008-2009 seasons, respectively). The dominant winter influenza strains in Taiwan were B/Malaysia/2506/2004-like in the 2006-2007 season, A/Brisbane/59/2007-like virus (H1N1) in the 2007-2008 season, and A/Brisbane/59/2007-like virus (H1N1) in the 2008-2009 season. The group with the lowest number of subjects with an HAI titer of ≥40 at baseline was children with antibody against the B/Taiwan/0050/2006 in the 2006-2007 season, A/Taiwan/785/2006 (H1N1) in 2007-2008 season, and A/Taiwan/951/2007 (H1N1) in 2008- 2009 season. The emergence of these viruses correlated well with the circulating influenza subtype in the following winter peak seasons. Conclusions. Low seroprotection rate among children against a specific locally circulating influenza strain might predict the dominantly circulating subtype of influenza virus in the coming winter season. A year-end preseasonal serological survey of children could provide valuable information about the possible circulating strain and tailor the disease-control strategy accordingly.
UR - http://www.scopus.com/inward/record.url?scp=77954697540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954697540&partnerID=8YFLogxK
U2 - 10.1086/653532
DO - 10.1086/653532
M3 - Article
C2 - 20528478
AN - SCOPUS:77954697540
VL - 51
SP - 171
EP - 176
JO - Clinical Infectious Diseases
JF - Clinical Infectious Diseases
SN - 1058-4838
IS - 2
ER -