And if it's the first time you have had the flu shot, you might be left wondering why you were asked about an egg allergy.
Hen's eggs play a central role in the manufacturing of flu vaccines.
"When the flu vaccines are made, the virus is grown in the yolk of fertilised hens eggs," University of Sydney pharmacologist Professor Peter Carroll said. Three things you might not know about the flu shot:
1.There is no live virus in the flu shot, so you cannot get the flu from the vaccine.
2.The composition of the vaccine changes every year.
3.The flu shot is safe for pregnant women at all stages of their pregnancy.
Egg-based manufacturing of influenza vaccination is the most common method and has been used for more than 70 years.
https://www.abc.net.au/news/2017-04-21/influenza-vaccine-made-inside-chook-eggs/8461002