Britain Opts for Mix-and-Match Vaccinations, Confounding Experts If a second dose of one vaccine isn’t available, another may be substituted, according to new U.K. guidelines.
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2026. Augusztus 21. Hajna, Sámuel napja van
2026. Augusztus 21. Hajna, Sámuel napja van
Britain Opts for Mix-and-Match Vaccinations, Confounding Experts If a second dose of one vaccine isn’t available, another may be substituted, according to new U.K. guidelines.
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