• Mild to moderate pain, redness, or swelling at • Observational data on the effectiveness of the available the injection site (up to 83%) vaccines are as follow: • Fever/chills (up to 15.5%) • For mRNA vaccines, the one-dose effectiveness ranged from 60 – 80% against any COVID-19 • Headache (up to 58%) infections • Fatigue (up to 65%) • For the AstraZeneca vaccine, the one-dose effectiveness rang. [...] In the Janssen trial, vaccines were administered to 21,895 individuals • 8 women in the Janssen vaccine trial (4 in the vaccine arm and 4 in the placebo arm) • Common side effects included: • Injection site pain (48.6%), • In a study on 131 people who have received the vaccine, • Headache (38.9%), vaccine-induced antibody is equivalent between pregnant and • Fatigue (38.2%) non-pregnant participan. [...] in the vaccine arm and 11 in the placebo arm) • 13 women in the Moderna vaccine trial (6 in the vaccine arm and 7 in the placebo arm) • 21 women in the AstraZeneca vaccine trial (12 in the vaccine arm and 9 in the placebo arm) What are the risks of COVID-19 vaccination in • The U. [...] Should I receive the AstraZeneca and Janssen • Since the mechanisms and manifestations are likely different, vaccine due to the clots related to the vaccine? the risks of each thrombosis is expected to be independent of • There is an ongoing investigation in the t. [...] associated with the AstraZeneca and Janssen vaccine What is the rationale and evidence behind (approximate risk ranging from 1 in 50,000 to 1 in 100,000).9 extending the vaccine dose interval in Canada?7 • Current evidence supports that one dose of mRNA vaccines • The discussion of rare thrombosis risks requires balancing the and the AstraZeneca vaccine extends protection to at least 8 risks of CO.
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