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As a pediatrician, I am really passionate about the flu shot. Influenza can be a nasty illness; every year, thousands of people are hospitalized with influenza and its complications, and some of those people die. The flu shot can protect my patients and their families, and I enthusiastically recommend it to all of them.

And yet many of them refuse, despite my best efforts. What is particularly frustrating is that many of them refuse because of misunderstandings about the flu shot. There is all sorts of misinformation out there, but here are the two most common myths:

1. The flu shot can make you sick. This is the one I hear most of all. Now, as with any medical treatment, it鈥檚 true that the flu shot can have side effects. Very often, people will have some soreness for a couple of days where they got the shot, and some people may feel a bit sick for a couple of days, and some may have a slight fever. These side effects aren鈥檛 serious and go away by themselves; more serious side effects are extremely rare.

The flu shot, however, cannot give you the flu. The vaccine itself is made from components of the flu; that鈥檚 how it works, by helping your body make antibodies that can fight the flu if you get exposed. But those components are either dead (in the case of the shot) or extremely weak (in the case of the nasal spray version) and cannot give you influenza. To be extra safe, we recommend the shot instead of the nasal spray for people with very weakened defenses and those who take care of them. But it鈥檚 really only the ones with very weakened defenses, like people on chemotherapy for cancer, that are affected by this recommendation 鈥� and it is more of a precaution than anything else.

It鈥檚 important to remember that we give the flu shot during the flu season 鈥� and that it can take a couple of weeks to take effect. Therefore, it鈥檚 possible to get the flu shot but catch the flu before the shot has a chance to work. The flu shot also doesn鈥檛 give 100% protection, and there are plenty of other viruses around that cause illnesses similar to the flu, so it鈥檚 always possible to get sick even if you get the flu shot. But it鈥檚 not the flu shot that makes you sick!

2. Healthy people don鈥檛 need the flu shot. I hear this a lot, too. 鈥淢y child never gets sick.鈥� 鈥淲e are a healthy family, we don鈥檛 need that.鈥� 鈥淚鈥檓 not worried about getting the flu, we will be fine.鈥� Well, besides the fact that luck only lasts so long and healthy people can get very sick with the flu too, there鈥檚 another important point: it鈥檚 not just about you. You and your family might weather the flu just fine, but you could easily pass it to others around you 鈥� like your friend鈥檚 newborn, your grandmother, the child at school on chemotherapy 鈥� for whom the flu is extremely dangerous. Vaccination doesn鈥檛 just protect you; it protects everyone around you. By getting the flu shot, you can literally save lives.

If you have questions about the flu or flu vaccine, talk to your doctor or visit . Make your decision based on facts 鈥� not myths.