2021
DOI: 10.3390/vaccines9090950
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Qualitative Assessment of Early Adverse Effects of Pfizer–BioNTech and Sinopharm COVID-19 Vaccines by Telephone Interviews

Abstract: Vaccines are considered the best approach for countering the COVID-19 pandemic. In this study, we compared early side effects associated with vaccination with the Sinopharm and Pfizer–BioNTech COVID-19 vaccines. Participants of this observational cohort were interviewed based on semi-structured telephone interviews, with enquiries about side effects that developed after vaccination with each dose of these vaccines. Overall, 1004 participants were enrolled, of which 51.1% received Sinopharm vaccine and 48.9% re… Show more

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Cited by 25 publications
(23 citation statements)
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“…Moreover, the reported side effects were generally mild in patients who received inactivated vaccines ( 19 , 22 , 41 44 ). The side effects duration was longer in BBIBP-CorV than in the mRNA-based vaccines ( 43 ). The local and systemic side effects were more prevalent after the second dose than the first dose for both inactivated and adenoviral vector vaccines, thus, confirming what was previously reported in different studies ( 45 , 46 ).…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, the reported side effects were generally mild in patients who received inactivated vaccines ( 19 , 22 , 41 44 ). The side effects duration was longer in BBIBP-CorV than in the mRNA-based vaccines ( 43 ). The local and systemic side effects were more prevalent after the second dose than the first dose for both inactivated and adenoviral vector vaccines, thus, confirming what was previously reported in different studies ( 45 , 46 ).…”
Section: Discussionmentioning
confidence: 99%
“…13 Several studies from various other areas of the world reported fewer side effects after administrating the first or second dose, such as pain at the site of injection, swelling, tenderness, redness, warmth, itch, and swollen armpit glands, headache, fever, fatigue, night sweats, chills and shivering, joint pain, muscle pain, nausea, vomiting, and loss of appetite. [14][15][16][17][18][19] Despite the reality that the clinical studies assured the vaccine was safe and effective, it had limitations, such as a few participants recruited in the clinical studies and a healthier than real-world sample. This may neglect some less frequent deleterious effects that may happen.…”
Section: Introductionmentioning
confidence: 99%
“…However, many were afraid of taking these vaccines due to myths, misconceptions, and side effects. Many studies have reported the unique side effects of individual vaccines [14][15][16][17], but few studies discussed the side effects of different vaccines [15,18].…”
Section: Introductionmentioning
confidence: 99%
“…There is little published data to corroborate adverse responses to the COVID-19 vaccination. Only a few studies discuss the side effects of the Sinopharm vaccines [15,18,[23][24][25]. The most common adverse effects of Sinopharm vaccination, according to these studies, were weariness, injection site pain, headache, fever, lethargy, chills, and myalgia.…”
Section: Introductionmentioning
confidence: 99%