Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; Chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site starting 18 hours after injection and lasting 1 day. Could not perform routine daily functions or work.; After that decreasing fever, decreasing headache, no chills, minor muscle ache and tiredness.; This is a spontaneous report from a contactable consumer, the patient. A 56-year-old male patient received the second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: UNKNOWN) via an unspecified route of administration in the left arm on 12Apr2021 at 17:30 (at the age of 56-years-old) as a single dose for COVID-19 immunisation. Medical history was reported as none. The patient did not have any allergies to medications, food or other products. The patient did not take any other medications within two weeks of vaccination. Prior to the vaccination, the patient was not diagnosed with COVID-19. Since the vaccination, the patient had not been tested for COVID-19. The patient previously took first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: UNKNOWN) via an unspecified route of administration in the left arm on 22Mar2021 at 17:30 (at the age of 56-years-old) as a single dose for COVID-19 immunisation. The patient did not receive any other vaccines within four weeks prior to the vaccination. On 13Apr2021 at 11:30, the patient experienced chills, fever, severe headache, minor muscle ache, minor sensitivity at injection site which started 18 hours after injection and lasted one day. The patient also reported that he could not perform routine daily functions or work, after that decreasing fever, decreasing headache, no chills, minor muscle ache and tiredness on an unknown date in Apr2021. The events did not result in doctor or other healthcare professional office/clinic visit, emergency room/department or urgent care. No therapeutic measures were taken as a result of the events. The clinical outcome of the event chills was resolved on 14Apr2021 and of fever, severe headache, minor muscle ache, minor sensitivity at injection site, could not perform routine daily functions or work, after that decreasing fever, decreasing headache, minor muscle ache and tiredness was resolving at the time of this report.    No follow-up attempts are needed; information about lot/batch number cannot be obtained.