Possibly some tiredness; This is a spontaneous report received from a non-contactable reporter(s) (Consumer or other non HCP). The reporter is the patient. Other Case identifier(s): MDEM22-00808.  A 42 year-old male patient received bnt162b2 (BNT162B2) (Batch/Lot number: unknown) as dose 1, single and (Batch/Lot number: unknown) as dose 2, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: FATIGUE (non-serious), outcome "unknown", described as "Possibly some tiredness". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: Caller got Moderna booster on 20Jan2022 after receiving two Pfizer doses previously. No reaction after the Pfizer doses, possibly some tiredness. 25 hours after the Moderna booster dose he started feeling tired, slight fever for a day. Afterwards headache, pressure over chest, higher fever. On 23Jan2022 he felt really knocked down. Has runny nose, joint pains, headache, extreme back pain. Feels like a rough flu. Now the chest symptom (palpitations) seems to have passed, is feeling limp, no fever today 24Jan2022. Still feeling tired, has headache, flu like symptoms. Batch number 3006270. No medical history, no concomitant medication. Symptoms were treated with Alvedon and Ipren. 1. If the patient/caregiver states they were diagnosed with myo/pericarditis, ask the following questions. If the patient/caregiver does not know, request permission to follow up with their physician or ask them to call back with the information. If so, (and available) provide the reference number and tell them to call back with the information and note this in the narrative. If not, write "Does not know" as the answer. Does not know. Cardiac related signs and symptoms: Please describe the symptom you experienced (any symptoms). Pressure on chest, palpitations. When did the symptoms start? 1-2 days after booster dose. Relationship with the vaccine dose, after the 1st or the 2nd dose? Moderna booster after two Pfizer doses. The symptoms have decreased after 4 days. Please try to obtain a timeline of symptoms including Cardiac Lab values (ECG, cardiac test, cardiac enzymes) Was a cause determined. Has not sought medical treatment. Possible covid infection during spring 2020. Not confirmed, but lost sense of taste. Date of positive COVID-19 test was Not available. Hospitalization due to COVID-1 was no. Treatment received None. Is there a history of Myocarditis/Pericarditis was no. Possible side effects Like all medicines, this vaccine can cause side effects, although not everybody gets them. Get urgent medical attention if you get any of the following signs and symptoms of an allergic reaction: changes in your heartbeat, shortness of breath, Talk to your doctor or nurse if you develop any other side effects. These can include: Very common (may affect more than 1 in 10 people): headache, muscle ache, joint aches, and stiffness, feeling very tired, chills, fever, Very rare (may affect up to 1 in 10,000 people). Inflammation of the heart muscle (myocarditis) or inflammation of the lining outside the heart (pericarditis) which can result in breathlessness, palpitations or chest pain. Spoke from. Undesirable effects. The safety of (Name withheld) was evaluated in an ongoing clinical study. Adverse reactions were usually mild or moderate in intensity and resolved within a few days after vaccination. A slightly lower frequency of reactogenicity events was associated with greater age.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.