Final answer:
Schools recommend vaccinations to achieve herd immunity and protect vulnerable individuals.
Explanation:
Schools strongly recommend vaccinations primarily to protect students who cannot be vaccinated with herd immunity. Vaccinations help create herd immunity, which safeguards individuals who cannot receive vaccines, such as those with compromised immune systems, from infectious diseases. By ensuring a high level of vaccination within the population, the spread of diseases is reduced, offering protection to vulnerable individuals.
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