Should I Get a Flu Shot?

The flu is a common and contagious illness caused by influenza viruses. According to the Centers for Disease Control and Prevention, last year’s flu season was considered high severity, with at least 47 million cases.  

Symptoms of the flu can range from mild to severe. On average, people experience symptoms for four to seven days.   

Who Is at Increased Risk?  

According to John Greene, MD, chair of the Infectious Diseases Program at Moffitt Cancer Center, certain people are at an increased risk for developing serious flu complications. This includes those 65 and older, pregnant individuals, people with chronic health conditions, and those with a weakened immune system, including cancer patients.   

“In immunocompromised patients, the flu can cause severe pneumonia,” Greene said. “If someone with a weakened immune system thinks they have the flu, it’s important to seek medical attention as soon as possible.”   

Who Should Get the Flu Shot?  

The CDC recommends that everyone 6 months and older gets a flu shot, ideally by the end of October.  

The flu shot does not contain live viruses — which are problematic for those with a weakened immune system — and it is considered safe for cancer patients. Because the nasal mist version of the flu vaccine includes a weakened live virus it is not recommended for cancer patients.   

“It takes about seven days to build immunity after receiving the flu shot,” Greene said. “I encourage everyone to get their flu shot to help protect those who are more vulnerable.”