The scientific and epidemiological concept of herd immunity is actually pretty easy to understand. Here’s a video that used a mathematical model to explain it. Shame that some people still say that this is fiction when reality couldn’t be more brutally honest.
[row][span size=’5′]A lot of bad things have come together in Pakistan to produce an outbreak of measles that is incredible in its scope and size. According to news reports, there have been almost 12,000 cases reported in the Punjab region of Pakistan over the last 5 months. That’s 2,400 cases per month, or about 80 cases per day. It’s just too big to understand.[/span][span size=’3′][show-map id=’9′][/span][/row]