The Centers for Disease Control and Prevention (CDC) recommend an annual flu shot for everyone beginning at six months of age, subject to limited exceptions for individuals who present certain risk factors. The general recommendation to get vaccinated includes women who are pregnant. According to the CDC:
“Getting a flu vaccine is the first and most important step in protecting against flu. Pregnant women should get a flu shot and not the live attenuated influenza vaccine (LAIV), also known as nasal spray flu vaccine. Flu vaccines given during pregnancy help protect both the mother and her baby from flu. Vaccination has been shown to reduce the risk of flu-associated acute respiratory infection in pregnant women by up to one-half… Pregnant women who get a flu vaccine are also helping to protect their babies from flu illness for the first several months after their birth, when they are too young to get vaccinated.”