One of the first things I noticed that was a similarity between the book World War Z and modern day was its shocking resemblance to the Covid 19 situation we find ourselves in today. I found the (Vacseen) shared a crazy similarity to the mask industry today. Though, unlike the vaccine in World War Z, some masks do work. For instance, proper medical masks tend to cut down on particularly passing through them by over 50%. That being said, much like in the book, there are companies playing off the fears of the public by selling products that do apsolutly nothing such as cloth masks. In a study reported by BMJ, cloth masks let through around 97% of particals.