They are not that effective on their own, but 95% herd immunity is enough to make any pandemics unviable, and the very few people that still manage to catch the disease can be isolated and treated. In other words, vaccinating 90% of a population will result in way less than 10% of the original infections/casualties.
They are not that effective on their own, but 95% herd immunity is enough to make any pandemics unviable, and the very few people that still manage to catch the disease can be isolated and treated. In other words, vaccinating 90% of a population will result in way less than 10% of the original infections/casualties.