Influenza viruses are changing continuously and new strains emerge from time to time. If a new influenza virus subtype, that is very different from all previous viruses, emerges and causes disease in the human population, people will have little or no specific immunity to it, and consequently this virus may spread quickly and become a […]
The influenza vaccine does not contain any live viruses and therefore cannot cause the illness. Flu vaccine manufacturers inactivate the viruses used in the vaccine during the production process, and batches of flu vaccine are tested to make sure they are safe.
Serious adverse reactions to the influenza vaccine are rare, with most common reactions being local redness and swelling at the injection site. Other mild symptoms including headache, mild fever and sore muscles may occur in a very small percentage of people vaccinated, but are limited to 24-48 hours duration. Allergic reactions may occur in people […]
The influenza vaccine can reduce the chances of getting the flu by 70%-90% in healthy adults. The vaccine may be somewhat less effective in elderly persons and very young children, but vaccination can still prevent serious complications (like pneumonia) and deaths related to the flu.
Influenza viruses have a great capacity to mutate and change. In light of this, a new vaccine is made every year to protect against the current strains. In addition, immunity provided by an influenza vaccine begins to fade after a year.
Influenza (the flu) is a highly contagious and potentially life-threatening disease. It can cause mild to severe illness, and at times can lead to death. The flu vaccine is the single best way to prevent the flu, and vaccination is the main tool used to protect people from influenza. The flu vaccine is easily administered […]
Pandemic outbreaks of influenza have caused a huge burden of disease in 1918, 1957 and in 1968 with estimated numbers of fatal cases of about 40, 2 and 1 million people worldwide respectively. There is no reason to believe that future pandemics would not have a similar impact. Furthermore there is no way to predict […]
Scientific experts agree that declaring the pandemic stage for the “Swine flu” and advising to produce pandemic vaccines were absolutely the proper things to do given the science and technology at our disposal when the pandemic emerged. As early as March 2009, it was clear that the “Swine flu” had pandemic potential: it was a […]
How safe are H1N1 vaccines? A wide range of measures are in place to monitor and review the safety of H1N1 pandemic vaccines, including (pre-)clinical testing, regulatory assessment, and wide-scale monitoring. This builds on the extensive safety record established with seasonal influenza vaccines over the last 60 years in a wide range of age and […]
In the past, new strains have generated pandemics causing high death rates and major disruptions to society. Although healthcare has improved in recent decades, epidemiological models project that today a pandemic is likely to result in 2 to 7.4 million deaths globally. In developed countries alone, accounting for 15% of the world’s population, models project […]