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. 2021 Dec 23;10(1):12. doi: 10.3390/vaccines10010012

Table 2.

Side effects after the first and second dose of the Pfizer-BioNTech COVID-19 vaccine.

Side Effects Patients
n = 44
Controls
n = 44
p Value
After the second dose
Injection site pain 20 (45.4%) 19 (43.2%) 0.83
Asthenia 15 (34%) 14 (31.8%) 0.82
Musculoskeletal pain 10 (22.7%) 11 (25%) 0.80
Headache 4 (9%) 3 (6.8%) 0.69
Nausea/vomit 1 (2.2%) 0 0.50
Fever 2 (4.4%) 2 (4.4%) 1
Chills 2 (4.4%) 2 (4.4%) 1
After the first dose
Injection site pain 22 (50%) 20 (45.4%) 0.67
Asthenia 12 (27.3%) 10 (22.7%) 0.62
Musculoskeletal pain 8 (18.2%) 10 (22.7%) 0.60
Nausea/vomit 5 (11.4%) 3 (6.8%) 0.46
Fever 3 (6.8%) 3 (6.8%) 1
Chills 0 1 (2.2%) 0.50