NHS24 - Health Information and Self Care Advice for Scotland

How effective is the seasonal flu vaccine?

Most people who have the seasonal flu vaccination will not get seasonal flu. However, like any vaccine, it does not give 100% protection. In years where the vaccine is well matched to the circulating viruses out of every 100 people who have the vaccine, 70-80 may be protected. Furthermore, while others who have had the vaccine but catch flu, are more likely to get milder symptoms. In some people additional protection may be needed to ensure that they develop a good immunity against the H1N1 (2009) – swine flu virus – See additional questions on pregnancy, children under 5 and immunocompromised people.

The seasonal flu vaccination will not protect you against:

• The common cold.
• Other winter viruses.

<<Back to Frequently Asked Questions