It works by teaching your body to create specific antibodies which help protect you against the flu virus. It usually takes about 10 to 14 days after your vaccination for this to become effective.4
If you have had your flu vaccination but still catch the flu, your body will be better prepared to defend itself, meaning that you’ll have milder symptoms and recover quicker too.4
This is especially important if:
You’re aged over 65 years old because as we age, so does our immune system, making us less able to fight off the effects of flu and its complications, increasing the risk of falling ill.5,6
You’re living with a long-term health condition, like asthma, diabetes or a heart condition, even if managed well, catching the flu can increase your risk of serious health complications.3,6
You live in a household with school age children and carers, as they are well known vectors/transmitters of flu.3