Hi doctor! My father had a stroke about 5 years ago, since then, his left side has limited movement (cannot stretch) but can still walk, living difficult. Doctor, can you tell me how to make my father live normally?

Vaccination is the most effective method to prevent some diseases caused by viruses. Along with the disease prevention effect, there is also a risk of unwanted side effects from vaccines such as headache, fever, pain at the injection site, etc. So what should you do when you have a sore arm after vaccination?