Extensive experience with non-COVID 19 vaccines has demonstrated that immunogenicity and adverse event profiles are generally similar when vaccines are administered simultaneously as when they are administered alone. Systemic reactions include fever, fatigue/malaise, headache, chills, myalgia, arthralgia; among younger children, particularly those younger than ages 3 years, systemic reactions also can include irritability/crying, sleepiness, and loss of appetite. Staying up to datewith COVID-19 vaccinations is recommended for people who are pregnant, trying to get pregnant now, or who might become pregnant in the future, and people who are breastfeeding. An 8-week interval between the first and second primary series doses of Moderna, Novavax, and Pfizer-BioNTech COVID-19 vaccines might be optimal for some people as it might reduce the small risk of myocarditis and pericarditis associated with these COVID-19 vaccines. There is currently no FDA-approved or FDA-authorized COVID-19 vaccine for children younger than age 6 months. Safeway pharmacist Shahrzad Khoobyari (right) administers a Pfizer COVID-19 booster shot into the arm of Chen Knifsend at a San Rafael vaccine clinic on Oct. 1, 2021. Meanwhile, when it comes to possible side effects such as myocarditis and pericarditis, the risk following Modernas bivalent BA.4/5 vaccine does not appear to be greater than the risk after a first booster dose of Moderna original vaccine or a booster dose of Pfizer bivalent BA.4/5 vaccine in adolescents and adults aged 12 years and above at this time, according to ATAGI. An illness consistent with MIS-C or MIS-A after receiving COVID-19 vaccine should be reported toVAERS. Immunogenicity and Reactogenicity of the Beta-variant Onestudy has found that the mRNA Covid vaccines from Pfizer and Moderna contain billions of particles of self-replicating DNA that can turn human cells into permanent factories for the COVID-19 spike protein. Currently, a booster dose using any COVID-19 vaccine is not authorized for children in this age group who complete a 3-dose Pfizer-BioNTech primary series, regardless of which Pfizer-BioNTech vaccine (i.e., a monovalent or bivalent) was administered for the third primary series dose. Where do boosters for kids stand? Counseling should include the need to seek care if symptoms of myocarditis or pericarditis develop after vaccination, particularly in the week after vaccination. Answer: Bivalent boosters combine the original COVID-19 vaccine with a reformulation that targets the BA.4 and BA.5 versions of the omicron variant. You may see your question featured and answered on KQED.org, KQED Public Radio or our social media.

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