her left arm tired more quickly; felt a deep radiating pain from her arm up to her shoulder; felt a deep radiating pain from her arm up to her shoulder/pain and discomfort up thru her shoulder into her neck; pain and discomfort up thru her shoulder into her neck; pain and discomfort up thru her shoulder into her neck; moderate fatigue; headache; took a nap on Friday afternoon for over an hour/Saturday for two hours in the afternoon; a service member was vaccinated subcutaneously instead of intramuscularly; This is a spontaneous report from a contactable consumer via a medical information team. A 34-year-old female patient received the first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection; lot number: EL3302, expiration date: 31May2021), subcutaneously in the left arm (also reported as left upper arm) on 22Jan2021 at 08:00 at a single dose for COVID-19 immunization. The patient's medical history and concomitant medications were not reported. The reporter was asking if there were any data on a vaccinated person who could be a carrier of COVID and transmit the virus to someone else even though they had been vaccinated and did not get sick and also asked if there was any follow up if somebody vaccinated became positive, carried the virus, and spread the virus. The reporter was also looking for recommendations on what to do if the vaccine was inadvertently administered subcutaneously. It was further reported that the patient, a service member, was vaccinated subcutaneously instead of intramuscularly (IM) on 22Jan2021. The reporter said that the patient was injected 4 inches down from her shoulder and an inch towards back of her arm. The patient described the area being the fatty portion of her arm. The reporter said that the patient wrote up a statement for them and said after she got the vaccine, she massaged the injection site and didn't feel any discomfort. The reporter said that the patient reported that 5.5 hours after injection on 22Jan2021 at 13:30, she felt a deep radiating pain from her arm up to her shoulder, then in the next few hours she had pain and discomfort up thru her shoulder into her neck. The patient reported other symptoms such as moderate fatigue and a headache. The reporter said that the patient reported she took a nap on Friday afternoon (22Jan2021) for over an hour, and took ibuprofen before bed Friday night. The patient took a nap Saturday (23Jan2021) for two hours in the afternoon, then slept 14 hours Saturday night. On Sunday morning (24Jan2021), the patient had continued fatigue, and thru Sunday, her shoulder and neck pain didn't subside. On Monday (25Jan2021), the patient was concerned that the pain and discomfort had been there several days, so she called her normal primary care provider (PCP), and the on call nurse told her to go to the emergency room (ER). The patient reported that the ER doctor said it looked like a subcutaneous injection versus IM. This was the end of information the patient gave, other than the ER doctor told her to take ibuprofen more regularly since noon on 25Jan2021. The patient also said in the email on Monday (25Jan2021) that she was still having pain, headache, and fatigue. The patient reported that her left arm tired more quickly (from an unspecified date) and was trying to use it while typing the email, and she was having trouble. The reporter was asking on what to do moving forward, whether it was recommended that they restart vaccine process and do two rounds or add a booster. Therapeutic measures were taken as a result of felt a deep radiating pain from her arm up to her shoulder/pain and discomfort up thru her shoulder into her neck, moderate fatigue, and headache. The patient was not recovered from the events "moderate fatigue and headache," while the outcome of the rest of the events was unknown.