tetano
Editor, Senior Moderator
Clin Vaccine Immunol. 2011 Jun 8. [Epub ahead of print]
Seroprevalence to influenza A(H1N1) 2009 virus - where are we?
Broberg E, Nicoll A, Amato-Gauci A.
Source
European Centre for Disease Prevention and Control (ECDC), SE-171 83 Stockholm.
Abstract
Age-specific seroprevalences for influenza make important contributions for estimating the burden of infection and determining the vulnerable populations. It is especially difficult to know the true clinical attack rates of the 2009 influenza A(H1N1) pandemic, however, we can estimate infection rates through analyses of seroprevalences based on national studies from different continents and countries with different demographics. After the 2009 influenza A(H1N1) pandemic, seroprevalence studies found 5-60% of populations across different continents and age groups having antibodies against the A(H1N1) 2009 virus. The seropositivity was highest in children and teenagers (20-60%) as well as in the elderly older than 80 years (20-40%). Pre-existing cross-reactive antibodies against the virus were present mostly in sera of older people (born before 1950) that could have encountered viruses descended from the 1918 pandemic viruses. Experience with the 2009 pandemic indicates how essential early and timely serology data against the emerging virus can be for informing decisions on use of antivirals and vaccination campaigns, especially in regard to risk groups.
PMID:
21653743
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21653743
Seroprevalence to influenza A(H1N1) 2009 virus - where are we?
Broberg E, Nicoll A, Amato-Gauci A.
Source
European Centre for Disease Prevention and Control (ECDC), SE-171 83 Stockholm.
Abstract
Age-specific seroprevalences for influenza make important contributions for estimating the burden of infection and determining the vulnerable populations. It is especially difficult to know the true clinical attack rates of the 2009 influenza A(H1N1) pandemic, however, we can estimate infection rates through analyses of seroprevalences based on national studies from different continents and countries with different demographics. After the 2009 influenza A(H1N1) pandemic, seroprevalence studies found 5-60% of populations across different continents and age groups having antibodies against the A(H1N1) 2009 virus. The seropositivity was highest in children and teenagers (20-60%) as well as in the elderly older than 80 years (20-40%). Pre-existing cross-reactive antibodies against the virus were present mostly in sera of older people (born before 1950) that could have encountered viruses descended from the 1918 pandemic viruses. Experience with the 2009 pandemic indicates how essential early and timely serology data against the emerging virus can be for informing decisions on use of antivirals and vaccination campaigns, especially in regard to risk groups.
PMID:
21653743
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21653743