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About the Herd Immunity and Its Benefits. Very Helpful in Covid 19 Pandemic Situation
When most of a population is immune to an infectious disease, this provides indirect protection—or herd immunity (also called herd protection)—to those who are not immune to the disease.
For example, if 80% of a population is immune to a virus, four out of every five people who encounter someone with the disease won’t get sick (and won’t spread the disease any further). In this way, the spread of infectious diseases is kept under control. Depending how contagious an infection is, usually 50% to 90% of a population needs immunity to achieve herd immunity.
What is Immunity? (प्रतिरक्षा क्या है?) Is this important in Covid19 Pandemic
Human beings are born with a basic immune system that is weak. Through constant interaction with the microbes in our environment, and within our gut, we learn to fight against new microbes, which helps to strengthen the immune system.
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