Описание закладки: The existence and spread of a disease can be warranted by just a tiny number of unvaccinated people.
To control the spread of a disease, the scientific community introduced the concept of ”herd immunity,” which recommends the vaccination of a large population, be it for flu or measles. It is believed that vaccinated people become obstructions in cases of outbreaks, as diseases can’t be transmitted through them to other people.
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