Client received her 1st dose of the COVID19 Pfizer vaccine (Lot#FC3183) at 16:31. After receiving her injection she went to the observation area to sit for 15 minutes.  At 16:45 the client notified EMT, that she had a ?numb feeling? in her left arm.  EMT waived for Lead RN to come over.  Lead RN arrived immediately and asked the client if aside from a numbness feeling in her arm, was she experiencing any other symptoms like difficulty breathing, shortness of breath, or chest pain.  Lead RN determined the client needed an interpreter and one was retrieved to translate.  After translating the aforementioned questions from Lead RN, the client responded ?no.?  The client then stated she was initially feeling a little dizzy too, and that it was starting to go away, but she was not sure she could balance herself if she stood up.  After speaking with the client, Lead RN observed that she was alert and oriented to person, place, time, and situation.  Client stated she started feeling pins and needles in her fingers and the feeling was moving up her arm. She stated she was not in pain and that her arm feels the same way when she gets her blood pressure taken, but she has not experienced the feeling with other shots she has received in the past.  Client stated she has no underlying health conditions except for problems with her hormones during menstruation and she is taking what she believes to be birth control pills for that.  She takes no medications.  Client stated she has no allergies.  EMT took client?s vitals at 16:55 (BP: 130/60, HR: 79 & SPO2: 97%).  Client stated she ate and drank before she came in and declined water.  Client then stated it felt like the same feeling was moving up her arm to her shoulder and the left side of her neck.  The client then stated it could be her neck and shoulders were just tired and tight from working all morning.  Lead RN asked the client if she was experiencing the numbness and/or tingling sensation in any other limbs or any place else on the left side of her body, and/or if she noticed any differences in her vision to which the client responded, ?no.?  Client continued to deny any respiratory issues or chest pain.  At 17:00 client stated, ?it?s starting to feel a little better.?  Lead RN asked the client if she was still feeling dizzy and the client stated, ?not really.?  Lead RN asked the client to sit for an additional 15 minutes to be monitored and the client agreed.  At 17:15 the client stated the pressure was starting to go away and now she was just starting to feel a little cold.  She also stated she believed the slight pain in her neck was just tightness and fatigue from work.  Client also indicated that she felt no dizziness.  EMT took client?s vitals (BP: 130/70, HR: 70, SPO2: 97%).  Lead RN utilized the Interpreter to educate the client on both the potential side effects and adverse effects of the vaccine, when to seek medical attention, and ER precautions.  Client communicated that she understood.  Lead RN asked client to try standing up and see if she felt dizzy.  Client stood up and stated she felt fine.  Client also expressed that her arm was starting to feel better, and the numbness and tingling were going away.  Client left at 17:19, walking with a steady gait.