Swine Flu (Influenza A H1N1) Follow on Vaccine Study
Status:
Completed
Trial end date:
2010-12-01
Target enrollment:
Participant gender:
Summary
In 2009 the World Health Organization (WHO) declared the Influenza A H1N1 (swine 'flu)
outbreak the first global pandemic of this century. It is thought to have been responsible
for 16,226 deaths globally as of 21st February 2010. The investigators know from previous
influenza outbreaks that the number of cases also tends to increase during the winter season
of the years after a pandemic. There is concern that last year's pandemic influenza strain
will return this winter and it has, therefore, been included in WHO's recommendations for
seasonal influenza vaccine combinations.
This study will assess the duration of the immune response to the H1N1 influenza vaccines
given last year, and how children will respond to this year's seasonal trivalent influenza
vaccine (which includes the H1N1 strain). Participating children would receive one dose of a
licensed seasonal influenza vaccine and blood tests would be taken before and after
vaccination.