Causes of a temporary rapid pulse include anxiety, fever, stress and exercise. Tachycardia causes a prolonged, sustained elevated heart rate, and it may cause your heart rate to increase to 400 beats per minute, notes the Heart Rhythm Society.
New flu vaccines are released every year to keep up with rapidly adapting flu viruses. Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. After vaccination, your immune system produces antibodies that will protect you from the vaccine viruses.
Flu shots donât work! Again, this has to do with the many different strains of influenza virus that change constantly. Seasonal flu shots canât cover every flu variety. So yes, you can still get sick if you get a flu shot â but youâre considerably decreasing your odds of getting sick during flu season by getting one, typically by 50-60%. I feel sick after getting the flu shot. Importantly, getting a flu shot cannot cause flu illness. Flu shots consist of inactivated flu virus or, in recombinant vaccines with no virus at all. Some people do experience mild side effects after getting a flu shot including soreness where the shot was given, low grade fever, headaches and achiness. These side effects are minor and brief considering the severity of getting sick with the flu for someone with diabetes.