<s>[INST] My adult son was injured in an motor vehicle accident in April, suffered a TBI, and is taking Symmetrel as one of three stimulant meds. Two others have been discontinued. As his caregiver, I would like him to have the flu vaccine. I am aware that he cannot have the live intranasal version, but can he have the killed virus injectable? Or is that vaccine completely killed vs. weakened? We have recently moved to a new locale immediately following his discharge from his final rehab facility. Although we have engaged a new PCP, our first appt. isn t til Nov. and i was instructed to use an urgent care facility if needed in the interim. My son has a Pm & R, but he doesn t have an answer for me. Thank you [/INST] Hello,Yes, it is recommended your son receive injection version of influenza vaccine (flu shot). The injection version is the inactivated form of the virus vs nasal spray is a live virus which is attenuated (weakened). National recommendations for vaccination, vary by country but generally, yearly influenza vaccination is recommended, to almost everyone, who is older than six months. Hope I have answered your query. Let me know if I can assist you further.Regards, Dr. Malik </s>