Immunity is broadly active or passive, beta—active when your body learns to fight after a vaccine or illness, and passive when you receive ready-made antibodies, like a newborn from its mother. But in our village, I've seen passive immunity from breastfeeding hold fort when the nearest health centre is a dusty hour away, though everyone praises active immunity from vaccines. That borrowed protection is no small thing; it keeps babies safe until our mobile vaccination van arrives, like the stubborn neem tree that shades us while we wait for the rains.
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