Question

Hi,

Watching the TED talk on "How Vaccines Work" and Herd Immunity I need help to do a short report on what I learned and understood from this and my perspective on the topic. My perspectives on the topic must be supported with evidence/example either from research articles or authentic websites.Citations must be provided for such information. I need to format my citations as per MLA style.

Answer 1

Herd immunity

Just as a herd of cattle or sheep uses sheer numbers to protect its members from predators, herdi immunityprotects a community from infectious diseases due to the sheer numbers of people immuneto such diseases. The more members of a human "herd" who are immune to a given

disease, the better protected the whole population will be from an outbreak of that disease. This concept is referred to as herd immunity. Early human communities were relatively small and isolated. Therefore, the spread of a disease was greatly limited by geography. But today, various modes of transportation allow humans to traverse the globe, essentially linking us all into one vast, interactive human herd. Increased interaction has resulted in increased disease transmission. The only thing that can break a chain of transmission is a disease-resistant link. By increasing the number of vaccinated individuals in a population, even those most vulnerable to disease can be protected by herd immunity.