Influenza Vaccine

About Influenza Vaccine

One of the most widely used vaccines, given to hundreds of millions of people each year. Flu vaccine effectiveness varies substantially from year to year, depending on how well the vaccine strains match circulating viruses. The vaccine is reformulated each year based on global surveillance. Even in low effectiveness years, the vaccine reduces severe illness and death. Flu causes an estimated 290,000 to 650,000 respiratory deaths annually worldwide. The vaccine is given as part of national immunisation schedules, which vary by country.