Walk-in Flu Vaccines this Saturday! It is back by popular demand. During the morning walk-in clinic this Saturday, September 30th, we will once again be giving flu shots on a walk-in basis. We will be open from 9AM until 11:30 AM that morning. Now is the best time to get your flu shot. If you can’t make it this Saturday, call us and we can arrange a time during the week for you to come in.