The concept that if a significant portion of a population becomes immune to an infectious disease, either through vaccination or previous infections, the spread of that disease is limited.
झुंड प्रतिरक्षा
English Usage: Scientists are hoping to achieve herd immunity through widespread vaccination.
Hindi Usage: वैज्ञानिकों को उम्मीद है कि व्यापक टीकाकरण के माध्यम से झुंड प्रतिरक्षा हासिल की जा सकेगी.