Feminine noun. Biological preparation that provides active acquired immunity to a particular infectious disease. E.g.: Se ha comprobado que la vacuna es muy eficaz en la prevención de la covid-19: The vaccine has proven very effective in preventing Covid-19.
The verbs are vacunar, to vaccinate, and vacunarse, to get vaccinated. Another noun is la vacunación: vaccination programme. E.g.: Aquellas personas que viajen a zonas selváticas pueden vacunarse contra la fiebre amarilla, malaria y cólera, previa consulta médica: Those persons travelling to jungle zones can be vaccinated against yellow fever, malaria and cholera, subject to medical consultation. dc
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