Are there any side effects from the pneumonia shot? is it similar to getting the flu shot?

Different vaccine: Except for sore arm, little swelling and redness at the site of injection threr is no serious side effect most of the time. There may be mild fever, drowsiness, irritability and loss of appetite rare causes are anaphylaxis due to allergy, headaches, swollen glands, skin rash, seizures, palpitation, swollen glands, wheezing etc. Pnumonia and flu vaccine are two different vaccines, and not at all similar.